6 July

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 20:43
  Permission Denied error with Get-ChildItem in PowerShell script - owcs Newest 'ffmpeg' Questions - Stack Overflow
  Whenever I try to run my PowerShell script, I get an error. Please note that I don't have much programming knowledge. Here is the code (with some folder names replaced) cd -Path "F:\\****\\folder1" $files = Get-ChildItem foreach ($file in $files) $newName = $file.BaseName + ".mp3" ffmpeg -i $file.FullName -codec:a libmp3lame -b:a 320k $newName Inside of folder1, there is folder2, which has the files I want to get. I'm not running in folder2, because in the future there will be a folder3 inside of folder1 and I want to get files from (...)
• 20:25
  Generating a waveform using ffmpeg - krisph Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to generate a waveform image using ffmpeg. I have successfully made a waveform image, however it doesn't look very nice... I have been looking around to try and style the image to make it look nicer, however I have been unable to find any information on this or any tutorials on this. I am using PHP and shell_exec to create the waveform. I am aware that there are php library that can do this but due to file format this is a lengthy process. The code I am using is as follows: $command = 'convertvid\\bin\\ffmpeg (...)
• 19:50
  Remove completely silent audio streams with FFmpeg - user2813499 Newest 'ffmpeg' Questions - Stack Overflow
  I have an mp4 file that contains a single video stream and multiple audio streams. Some of the audio streams are silent. Is there a way for FFmpeg to detect and remove all the silent audio streams?
• 19:41
  M4a (mp4) audio file encoded with pydub+ffmpeg doesn't play on Android - Evelyn Newest 'ffmpeg' Questions - Stack Overflow
  I have a python script to split up some wav files and export to m4a using pydub. I'm able to get these files to play on several devices, but not on an Android device (using Google Pixel 3). When I try encoding with straight ffmpeg in terminal, that works fine on the Android device. What is the difference in these two files, and since pydub is using ffmpeg, what do I need to change to make it do exactly the same as the ffmpeg command? Not working from pydub import AudioSegment >>> audio = AudioSegment.from_wav("input.wav") >>> slice = audio[1000:3000] >>> (...) -- pydub
• 20:56
  Unhandled stream error in pipe: write EPIPE in Node.js - Michael Romanenko Newest 'ffmpeg' Questions - Stack Overflow
  The idea is to serve screenshots of RTSP video stream with Express.js server. There is a continuously running spawned openRTSP process in flowing mode (it's stdout is consumed by another ffmpeg process): function spawnProcesses (camera) var openRTSP = spawn('openRTSP', ['-c', '-v', '-t', camera.rtsp_url]), encoder = spawn('ffmpeg', ['-i', 'pipe:', '-an', '-vcodec', 'libvpx', '-r', 10, '-f', 'webm', 'pipe:1']);  (...)
• 18:50
  ffmpeg - Read raw Data instead of converting to different Format - Aelrond Newest 'ffmpeg' Questions - Stack Overflow
  Since what ffmpeg does generally is read either an audio / image / video file of a given Codec & then converts it to a different Codec, it must have at some point hold to raw values of the media files, which: for Audio the raw Samples (2*44100 Samples) in case of Stereo Audio as int / float rgba pixel data for images (as int8 array) for video, array of images & linked Audio streams How can I essentially just read those raw values & get them in Memory / on Disk in lets say C++ / Python / Java? best (...)
• 18:50
  FFmpeg: Pipe segments to s3 - Brendan Kennedy Newest 'ffmpeg' Questions - Stack Overflow
  I'd like to pipe ffmpeg segments to s3 without writing them to disk. ffmpeg -i t2.mp4 -map 0 -c copy -f segment -segment_time 20 output_%04d.mkv Is it possible to modify this command so that ffmpeg writes segments to an s3 bucket? Something like this perhaps? ffmpeg -i t2.mp4 -map 0 -c copy -f segment -segment_time 20 pipe:1 \\ | aws s3 cp - s3://bucket/output_%04d.mkv When I run the command above I receive this error Could not write header for output file #0 (incorrect codec parameters ?): Muxer not found This command works except (...)
• 18:40
  ffmpeg - Subtitle with multiple fonts for hard sub - MahdiElvis Newest 'ffmpeg' Questions - Stack Overflow
  I wanna hard sub a video with a subtitle but multiple fonts . I just installed that fonts on server but i don't know how to do it I use this command: ffmpeg -i $input.mkv -vf subtitles=subtitle.ass:force_style='FontName=B Koodak' $out.mkv I searched for it and i guess i could use multiple subtitles and give each one different font .
• 18:19
  FFmpeg similar images filtering into png - Udi Newest 'ffmpeg' Questions - Stack Overflow
  I'm using FFmpeg on Mp4 and Avi videos, trying to output all the frames in configurable frame rate to png files using the following command: ./ffmpeg -i ~/Downloads/test.mp4 -vf mpdecimate=hi=1536:lo=640:frac=0.5,setpts=N/60/TB,fps=60/60 "/tmp/resultOutpu/(#%04d).png" test.mp4 is a 10 seconds video of my face using the phone and I expect it to take 10 frames and drop 9 because it is much similar to the first frame. (The video is 1 pose) The actual results it 10 frames of the actual first frame! Meaning it actually using mpdecimate but it also creates 9 more frames (...)
• 18:15
  FFmpeg pad filter calculating wrong width - Abdullah Saleem Newest 'ffmpeg' Questions - Stack Overflow
  I'm using ffmpeg.exe -i in.jpg -filter_complex "[0:v]pad=iw:ih+10:0:0" out.jpg to add a padding of 10px at the bottom of images and videos. In most cases it works as expected but with some the width is off by 1px resulting in failure with error: [Parsed_pad_0 ⓐ 000002ba70617c40] Input area 0:0:623:640 not within the padded area 0:0:622:650 or zero-sized [Parsed_pad_0 ⓐ 000002ba70617c40] Failed to configure input pad on Parsed_pad_0 Error reinitializing filters! Failed to inject frame into filter network: Invalid argument Error while (...) --
• 18:13
  ffmpeg produces quality poor gif animation from gnuplot pictures - Tobi Newest 'ffmpeg' Questions - Stack Overflow
  I am using FFmpeg a while, but I never found this strange behavior that I cannot resolve right now. I do have a few plots generated via Gnuplot, and I do want to combine them into an animated gif file. The code I am using is the following: cat $(find singleGraphs -maxdepth 1 -name "*.png" | sort -V) | \\ ffmpeg \\ -framerate 2 \\ -i - \\ -pattern_type glob \\ -q:v 1 \\ -y \\ Analysis.gif \\ ; The resulting gif picture is poor in color, as you can see in the animation below. I probably do use any argument wrong, or something is (...) -- , The single Gnuplot Pictures
• 18:08
  ffmpeg from .mp3 to .al appears to slow and deepen the audio - Darpeh Newest 'ffmpeg' Questions - Stack Overflow
  I have an mp3 input file that is 22050Hz and 48kb/s. I need to convert it to a .al file in order to stream it to a camera on my network for output. ffmpeg -i file.mp3 file.al creates a file that does play but the bitrate of the output is 176kb/s and it clearly slower/deeper sounding. I have tried -b:a 48k and -filter:a without success but I could be doing it wrong. Documentation states that this is the format I need: PCM ADPCM G.711A G.711.Mu G.726 G.729 MPEG2 AMR (...)
• 17:58
  How to use pyav or opencv to decode a live stream of raw H.264 data? - Dery Newest 'ffmpeg' Questions - Stack Overflow
  The data was received by socket ,with no more shell , they are pure I P B frames begin with NAL Header(something like 00 00 00 01). I am now using pyav to decode the frames ,but i can only decode the data after the second pps info(in key frame) was received(so the chunk of data I send to my decode thread can begin with pps and sps ), otherwise the decode() or demux() will return error "non-existing PPS 0 referenced decode_slice_header error" . Here is my key code: #read thread... read until get a key frame, then make a new io.BytesIO() to store the new data. rawFrames = (...)
• 17:54
  Compiling ffmpeg for android on Mac - SlaneR Newest 'ffmpeg' Questions - Stack Overflow
  I tried to compile ffmpeg for android on Mac, but it does not work for me. #!/bin/bash NDK=/Users/user/Library/Android/sdk/ndk-bundle SYSROOT=$NDK/platforms/android-18/arch-arm/ TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64 function build_one ./configure \\ --prefix=$PREFIX \\ --enable-shared \\ --disable-static \\ --disable-doc \\ --disable-ffmpeg \\ --disable-ffplay \\ --disable-ffprobe \\ --disable-network \\ --disable-filters \\ --disable-avdevice \\ --disable-doc \\  (...)
• 17:45
  How to create video from audio files using ffmpeg - Prateek Singla Newest 'ffmpeg' Questions - Stack Overflow
  I have around 8000 audio files (~6 GB in total) mostly in either m4a or mp3 format. Is there a way to convert these audio files to video with filename appearing as a static poster image in video. I was able to find drawtext filter in ffmpeg which might be helpful. But don't know how to write it out in one command so that I just pass in name of the audio file (mp3/m4a) and as output I get a video containing name of audio file as a display (with 256 by 144 pixel resolution). So far I have been able to do this all by using ImageMagick convert commmand to first create static (...) -- drawtext filter
• 16:37
  TTML subtitle missing in HLS - playmaker420 Newest 'ffmpeg' Questions - Stack Overflow
  I tried to inject a ttml subtitle into a mp4 file using the following command. docker run --rm -v `pwd`:/work sambaiz/mp4box -add my.ttml input.mp4 ffmpeg -i input.mp4 ffmpeg version 3.4 Copyright (c) 2000-2017 the FFmpeg developers built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.4) configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --mandir=/usr/share/man --enable-avresample --disable-debug --enable-nonfree --enable-gpl --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-decoder=amrnb --disable-decoder=amrwb (...)
• 16:12
  ffmpeg from .mp3 to .al appears to slow and deepen the audio. I've narrowed it down to bitrate - how to get -b:a to stick? - Darpeh Newest 'ffmpeg' Questions - Stack Overflow
  I have an mp3 input file that is 22050Hz and 48kb/s. I need to convert it to a .al file in order to stream it to a camera on my network for output. ffmpeg -i file.mp3 file.al creates a file that does play but the bitrate of the output is 176kb/s and it clearly slower/deeper sounding. I have tried -b:a 48k and -filter:a without success but I could be doing it wrong.
• 16:12
  ffmpeg extracts only part of 1 audio stream from .ts file - Shakalakah Newest 'ffmpeg' Questions - Stack Overflow
  Here is what ffprobe input.ts shows: libavutil 56. 55.100 / 56. 55.100 libavcodec 58. 93.100 / 58. 93.100 libavformat 58. 47.100 / 58. 47.100 libavdevice 58. 11.100 / 58. 11.100 libavfilter 7. 86.100 / 7. 86.100 libswscale 5. 8.100 / 5. 8.100 libswresample 3. 8.100 / 3. 8.100 libpostproc 55. 8.100 / 55. 8.100 Input #0, mpegts, from 'D:\\Downloads\\TEST\\audio.ts': Duration: 02:22:29.67, start: 0.000000, bitrate: 51 kb/s Program 1 Stream #0:0[0x101]: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 83 (...)
• 16:04
  Scaling Application for video decoding using ffmpeg - jasoos Newest 'ffmpeg' Questions - Stack Overflow
  I am building an application to read multiple IP camera streams (rtsp) and run different Machine Learning Algorithms over it in real time. For each camera stream, I spawn an ffmpeg process which continuously break the rtsp streams into frames and store them as images (JPEG). The streams use H.264 encoding. I am taking 1 frame every second as output. Message queues corresponding to models are given the message containing location of the file. Models keep on picking up the file and drawing inferences The problem I am facing is the CPU usage by ffmpeg (...)
• 15:55
  react-native-ffmpeg Unrecognized option 'preset' - Tommy Khumarga Newest 'ffmpeg' Questions - Stack Overflow
  Below is my ffmpeg command: y -i vidInput.mp4 -vcodec mpeg4 -b:v 1000k -b:a 48000 -preset ultrafast vidOutput.mp4 And the result is: [Mon Jul 06 2020 20:42:08.171] LOG Unrecognized option 'preset'. [Mon Jul 06 2020 20:42:08.172] LOG Error splitting the argument list: [Mon Jul 06 2020 20:42:08.174] LOG Option not found Need advice...
• 14:14
  Improving Google Cloud Speech-to-Text accuracy - lr_optim Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on a project where I need to perform these steps: Record a voice call (.webm -file) Split the webm -file into chunks with ffmpeg and convert the file into wav Transcribe the chunks using SpeechRecognition -library and Google Cloud API I've faced problems with the transcription accuracy and wondering if there is something I could do to improve it. At the time I'm splitting the original file into 30s chunks. I thought there might be one problem, that I might be missing words because of splitting so I've tried also with longer chunks (...)
• 12:58
  FFmpeg Zoom in and out video every x seconds problem - cleanguy Newest 'ffmpeg' Questions - Stack Overflow
  I want to zoom in 3 seconds every 6 seconds and then zoom out. I can do this, but the sound slips. video zoom periodically What would be the reason ? ffmpeg -i "test.mp4" -vf "zoompan=z='if(lte(mod(time,4),3),zoom+0.5,zoom-0.2)':x='iw/2-(iw/zoom)/2':y='ih/2-(ih/zoom)/2':d=1:fps=24" -vcodec libx264 -acodec aac -preset ultrafast "rendered/test.mp4"
• 12:56
  FFmpeg - generate x264 CBR video transport stream with C-API - ZeroDefect Newest 'ffmpeg' Questions - Stack Overflow
  Using various posts sprinkled around the Internet, including this one here on SO, I've been able to understand how to use the FFmpeg cli to generate a CBR video bitrate using the x264 codec (wrapped in an MPEG-2 transport stream). Note: I'm concerned with the video bitrate - nothing else. ffmpeg -i cbr_test_file_input.mp4 -c:v libx264 -pix_fmt yuv420p -b:v 6000000 -preset fast -tune film -g 25 -x264-params vbv-maxrate=6000:vbv-bufsize=6000:force-cfr=1:nal-hrd=cbr -flags +ildct+ilme x264_cbr_test_output.ts However, I'm trying to approach this from an (...) -- , , git repo
• 12:00
  how to sync frames while calculating vmaf score using ffmpeg - Tarun Newest 'ffmpeg' Questions - Stack Overflow
  I have one source video and encoder version of that source. Now I need to find vmaf score. However I read that to ensure right vmaf score, it is important that both source and encoded videos are in frame sync. Can you please advise how can i do that using filters on decoded streams in ffmpeg. I I have command like below ffmpeg2 -i 11sec_encoded_720p_200k.mp4 -i 11sec_original_1080p.mxf -filter_complex "[0:v]scale=1920x1080:flags=bicubic[main]; [main][1:v]libvmaf=model_path=vmaf_v0.6.1.pkl:psnr=1:ssim=1:ms_ssim=1:log_fmt=json:log_path=720p_200k.json" -report -f null (...)
• 08:10
  Centos7 Server, Masrer Playlist can't create CODECS when use ffmpeg with libx265 - Duy Đức Nguyễn Phạm Newest 'ffmpeg' Questions - Stack Overflow
  I use ffmpeg to stream from a link, when I use libx264 it run very good but when I use libx265, file master playlist can't create CODECS and I can't see it on my VLC #My ffmpeg on centos server Can you help me? Thank you! -- #My ffmpeg on centos server
• 06:54
  adjust volume just for 1 loop with ffmpeg - alde Newest 'ffmpeg' Questions - Stack Overflow
  What i've achieved so far is looping bgAudio and delay the mainAudio for 5 sec. But, there is issue when the bgAudio start to loop then its volume start again from 7.0, not from 0.9. ffmpeg version = 3.0.1 "-i", mainAudio, "-filter_complex", "amovie=bgAudio:loop=999,volume=enable='between(t,0,5):volume=7.0',volume=enable=" + "'between(t,5.01,0):volume=0.9'[s];[0:0]adelay=5000|5000," + "volume=6.0[a];[a][s]amix=inputs=2:duration=first", "-ss", "0", "-c:a", "aac", (...)
• 05:09
  Watch My Hero Academia Heroes Rising Full Movie Online FREE #2019 - sarahlburke58 Newest 'ffmpeg' Questions - Stack Overflow
  Watch My Hero Academia: Heroes Rising (2018) Full Movie Online HD Streaming Free Unlimited Download, Watch My Hero Academia: Heroes Rising (2018) Full Series 2017 Online Movie for Free DVD Rip Full HD With English Subtitles Ready For Download. Watch My Hero Academia: Heroes Rising Full MOVIE HD ►► Watch My Hero Academia: Heroes Rising (2018) Movie Free 2017 1080p, 720p, BrRip, DvdRip, CapRip, Telesyc, High Quality, My Hero Academia: Heroes Rising (2018) Movie Online, My Hero Academia: Heroes Rising (2018) Movie Full HD Free. Watch My Hero Academia: Heroes Rising (2018) (...)
• 04:56
  Can't get watermark on my nginx-rtmp live streams with ffmpeg - mallebabbe Newest 'ffmpeg' Questions - Stack Overflow
  Goodday, I'm trying to get my livestreams watermarked but for some reason the streams aren't transcoded with the image I want to have on top. My current build is: Stream from OBS to Nginx-RTMP server In the nginx.conf I've an app configured with the name live which should trigger ffmpeg execution and transfer the output to the push app to deliver the final stream to the different Social Media platform All is working without the ffmpeg execution. My OBS Stream configuration looks like (...)
• 03:18
  How do i set total file duration generating a piped mp4 with ffmpeg? - Mikhail Novikov Newest 'ffmpeg' Questions - Stack Overflow
  My task is to generate (by piping, so that a file can be played at the same time with generation) an mp4 file which is a part of a larger file, with the result looking like a static file link, being seekable before it fully loads (i.e. supporting range headers). Here is how i do it now: ffmpeg -ss $1 -i /root/nextpro-livestream/replay/teststream_hls1_replay.mp4 -t $2 -timecode $3 -codec copy -movflags frag_keyframe+faststart -f mp4 pipe:1 Result is OK (video starts from the right point) except the player does not see the total duration of a file so a (...)

5 July

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 22:23
  Nodejs + FFMPEG + AWS EC2 - Broken Pipe - Jordan H. Newest 'ffmpeg' Questions - Stack Overflow
  I have an AWS EC2 instance (t2.micro) running a Nodejs script. This script awaits an FFMPEG stream via HTTP and re-broadcasts it via a websocket server (see websocket-relay.js here). On the same EC2 instance, I use FFMPEG to stream from a file to the aforementioned HTTP input. After exactly one (1) minute, FFMPEG generates the following error: BEGINNING OF ERROR ------ av_interleaved_write_frame(): Broken pipe Last message repeated 1 times Error writing trailer of http://127.0.0.1:8081/secretkey: Broken pipe frame= 1209 fps= 20 q=1.0 Lsize= 49968kB time=00:00:59.89 (...) -- here, http://127.0.0.1:8081/secretkey
• 21:59
  Compile OpenCV with Cmake to integrate it within a Conda env - YellowishLight Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to follow these instructions inspired from here to compile OpenCV so that it gets integrated within a Conda environment that I previously set. However, when I import cv2 within this conda environment, python3 doesn't find it. Here are the instructions that I follow to install Opencv : sudo apt-get update sudo apt-get upgrade sudo apt-get install build-essential cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev sudo apt-get install python3.6-dev python3-numpy libtbb2 libtbb-dev sudo (...) -- here
• 21:17
  Problem using FFmpeg to convert MKV with A/52 B audio (aka E-AC3) to AAC - nxl4 Newest 'ffmpeg' Questions - Stack Overflow
  I've got a number of MKV files which are (per VLC) encoded with A/52 B (aka E-AC3) audio codecs. I would like to convert these to AAC, but I'm having trouble doing this with FFmpeg. The command I'm running is: ffmpeg -hwaccel auto -i original_file.mkv -y -c:v copy -c:a aac output_file.mkv The command completes without error. However, the generated file has no audio when I play it. FFmpeg's output is as follows: ffmpeg version 4.2.2-1ubuntu1 Copyright (c) 2000-2019 the FFmpeg developers built with gcc 9 (Ubuntu 9.3.0-3ubuntu1)  (...)
• 20:27
  Cutting the videos based on start and end time using ffmpeg - Kalai Newest 'ffmpeg' Questions - Stack Overflow
  I tried to cut the video using the start and end time of the video by using the following command ffmpeg -ss 00:00:03 -t 00:00:08 -i movie.mp4 -acodec copy -vcodec copy -async 1 cut.mp4 By using the above command i want to cut the video from 00:00:03 to 00:00:08. But it is not cutting the video between those times instead of that it is cutting the video with first 11 seconds. can anyone help me how resolve this? Edit 1: I have tried to cut by using the following command which is suggested by mark4o ffmpeg -i movie.mp4 -ss 00:00:03 -t (...)
• 20:12
  ffmpeg sorting order issue while creating video - Suhaanaa Shah Newest 'ffmpeg' Questions - Stack Overflow
  I am able to successfully able to convert images to video using below command where all photos of out directory is used. $command1 = "ffmpeg -r 1/1 -framerate 25 -pattern_type glob -i 'out/*.jpg' -c:v libx264 -profile:v high -crf 20 -pix_fmt yuv420p -vf 'pad=ceil(iw/2)*2:ceil(ih/2)*2' out/1.mp4"; exec($command1); However the photos are getting picked randomly and I want to pick them using sort order example. Pic1.jpg, Pic2.jpg, Pic2.jpg ...... Please (...)
• 19:59
  Using FFmpeg to zoom in then zoom out in a video - david Newest 'ffmpeg' Questions - Stack Overflow
  I would like to use FFmpeg on a video to zoom in and stay zoomed for 3 seconds then zoom out to full screen and stay like that for 3 seconds and repeat this cycle through the whole video Thanks in advance.
• 19:55
  Capture ffmpeg's metadata output in powershell - xdhmoore Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to capture the output of ffmpeg in PowerShell(tm) to get some metadata on some ogg & mp3 files. But when I do: ffmpeg -i file.ogg 2>&1 | sls GENRE The output includes a bunch of lines without my matching string, "GENRE": album_artist : Post Human Era ARTIST : Post Human Era COMMENT : Visit http://posthumanera.bandcamp.com DATE : 2013 GENRE : Music TITLE : Supplies track : 1 At least one output file must be specified I am guessing something is different in the encoding. ffmpeg's (...) --
• 19:03
  Blur MP4 video section for x seconds using FFmpeg - sigur7 Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to blur out an account ID that is showing in the footer of my video for the first 47s. I have managed to do an entire page blur for 47 seconds and blurred out the desired section for the entire video, but not managed to be able mix the two to get the desired result? Adding the between section to the original blurbox command keeps throwing errors. Blurs entire video for first 48 seconds ffmpeg -i original.mp4 -vf "boxblur=enable='between(t,0,47)'" -codec:a copy blurred.mp4 Blurs a certain segment, but for the whole video ffmpeg -i original.mp4 (...)
• 19:02
  How can I get ffmpeg to stream my webcam? - nonlinearmind Newest 'ffmpeg' Questions - Stack Overflow
  I want to stream my webcam and managed to stream it successfully to bambuser.com using the following, but need to be able to view it locally. This successfully posts it to babuser: ffmpeg -v debug -f alsa -ac 1 -i hw:1,0 -acodec libmp3lame -itsoffset 00:00:00 -f video4linux2 -s 360x240 -i /dev/video0 -r 15 -f flv -ar 44100 rtmp://522f4133d0.fme.bambuser.com/b-fme/0bacf5bb634dbbbd52bdd99d71406dc6f362c I've tried the following, but get "RTMP_Connect0, failed to connect socket. 111 (Connection refused) rtmp://localhost:8090/: Operation not (...)
• 18:53
  how to use cgroups in php exec - Skora Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to use cgroups in php And I did the following : sudo cgcreate -g cpu:/www-data sudo cgset -r cpu.cfs_period_us=1000000 www-data sudo cgset -r cpu.cfs_quota_us=100000 www-data And when I do use it on ffmpeg via the terminal it works fine But when I used it in php like : exec("cgexec -g cpu:www-data ffmpeg -i music.mp3 -ac 1 -map 0:a -acodec libopus -b:a 64k -vbr off -ar 24000 music.ogg"); does not work Can it be used with (...)
• 18:08
  How can I cut the video before concatenation in video-filter? - Yury Zinoviev Newest 'ffmpeg' Questions - Stack Overflow
  I need concatenate two videos (video2.mp4 + video1.mp4), but before I have to cut the first 15 (for instance) seconds of the first video (video1.mp4). But I can't use -ss option in this case. ffmpeg -i video1.mp4 -i video2.mp4 -filter_complex "[0:v]trim=start=15[vid];[0:a]atrim=start=15[aud];[1:v][1:a][vid][aud]concat=n=2:v=1:a=1[v][a]" -map '[v]' -map '[a]' out.mp4 In this case, I may not use -ss option before first -i input file. So I need to cut the video1.mp4 using filter_complex abilities. But the trim options results not the same result (...)
• 17:57
  Concatenate sped up videos and normal speed ones using ffmpeg - FlucTuAte. Newest 'ffmpeg' Questions - Stack Overflow
  I have a python script that uses ffmpeg to cut different sections of a video. There are ones that i want to keep as-is, and i use this ffmpeg command for that: os.system(( "ffmpeg " "-loglevel error " "-nostats " "-hide_banner " f"-ss start / fps " f"-i \\"uncutVideo\\" " f"-t (end - start) / fps " "-c copy " "-avoid_negative_ts make_zero " f"tmp\\\\outprocessedClips.mp4" )) Start and end are frame numbers, that's why i divide by fps. Then I have the parts where I want to speed up the video. I use this command for (...)
• 16:17
  Remove the clip between two videos - V1rus_Falcon Newest 'ffmpeg' Questions - Stack Overflow
  i'm trying to remove the intro clip from two video just like netflix does with its "skip the intro" feature. i tried with emgu.cv for extracting the frames, phash for hashing the frames and checking the differences between them. I would prefer use ffmpeg or opencl
• 13:50
  Turn image sequence into video with transparency - Cody Hatch Newest 'ffmpeg' Questions - Stack Overflow
  I've got what seems like it should be a really simple problem, but it's proving much harder than I expected. Here's the issue: I've got a fairly large image sequence consisting of numbered frames (output from Maya, for what its worth). The images are currently in Targa (.tga) format, but I could convert them to PNGs or other arbitrary format if that matters. The important thing is, they've got an alpha channel. What I want to do is programatically turn them into a video clip. The format doesn't really matter, but it needs to be lossless (...)
• 11:00
  Impossible to convert between the formats supported by the filter '...' - Error reinitializing filters - Fabien Biller Newest 'ffmpeg' Questions - Stack Overflow
  I am using this ffmpeg command(values removed for simplicity) ffmpeg -hwaccel cuvid -c:v h264_cuvid -y -ss 1 -i "FILE0001.MOV" -ss 0 -i "GOPR0621.MP4" -filter_complex [0:v][1:v] midequalizer [al]; [al] yadif lenscorrection scale [vl]; [1:v] lenscorrection scale [vr]; [vl][vr] hstack=shortest=1 -an -c:v h264_nvenc -preset slow "output.mp4" on a machine with a cuda graphics card. I get ffmpeg version N-90979-g08032331ac Copyright (c) 2000-2018 the FFmpeg developers built (...)
• 10:21
  Saving immediately each converted image to video file - Adam Lasota Newest 'ffmpeg' Questions - Stack Overflow
  I want to ask about solution to streaming many of image to video. I traied use ffmpeg java, Jcodec, Humble-Video but this api providing static convert. Is means that gets all images, process it and save to file. For example (pseudocode): JCodec jcodec= new Jcoced(file.mp4);//could be ffmpgRecorder for(image:images) jcodec.record(image); jcodec.stop() jcodec.release() If execute jcodec.stop() then to file is flushed converted images. Is possible to saving file image by image and stream to file? Images for application are providing by (...)
• 08:18
  ffmpeg hls_time option is not working with h264_nvenc - viet1pro Newest 'ffmpeg' Questions - Stack Overflow
  I want splitting video into HLS slice using -hls_time, but only -codec copy can use this. I have tried adding key frame like this but still can't use -force_key_frames expr:"gte(t,n_forced*1)" This is code that can use -hls_time ffmpeg -i "/content/test.mp4" -codec copy -hls_list_size 0 -hls_time 6 /content/'480p.m3u8' And this is code that -hls_time not work ffmpeg -vsync 0 -hwaccel cuvid -i "/content/test.mp4" -c:a copy -c:v h264_nvenc -gpu 0 -b:v 1400000 -force_key_frames expr:"gte(t,n_forced*1)" -hls_time (...)
• 06:50
  Pipe input in to ffmpeg - AbstractDissonance Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to use ffmpeg to decode audio data. While it works to load from a file, I would like to avoid using files because to do so, means I would have to use a temporary. Instead, I'd like to pipe in the data(which I've previously loaded) using stdin. Is this possible? e.g., Manually load mp3 file Pipe it in to the ffmpeg spawned process Get raw output (it should work with ffprobe and ffplay (...)
• 06:04
  Im getting error when generating thumbnails using ffmpeg in firebase functions - Sajjad Newest 'ffmpeg' Questions - Stack Overflow
  I'm writing this code for generating thumbnail from a video uploaded to firebase storage using FFmpeg, I am saving thumbnails first in the temp directory and then uploading it to firebase storage. The thumbnails are saved in temp dir but I'm getting an error while saving it to firebase storage. (EISDIR ERROR) const targetTempFilePath = path.join(os.tmpdir(), targetTempFileName); const targetStorageFilePath = path.join(path.dirname(filePath), targetTempFileName); ffmpeg.ffprobe(req.body.videoUrl, (err, metaData) => if (err) console.log(err);  (...)
• 04:28
  How to set a dictionary based off of subprocess.check_output - Jessie Wilson Newest 'ffmpeg' Questions - Stack Overflow
  This is a confusing question, however I will try to make it as clear as possible. Currently when I build my app, if I run it via the .py file it works perfectly. However, once I compile it some parts of my app aren't functioning, specifically this code here. def ffprobe_run(): global output global acodec_choices run = subprocess.check_output("ffprobe " + videoinputquoted + " " + ffprobecommand, universal_newlines=True) print(run) if run[-2] == '3': acodec_choices = "One": "1", "Two": "2", "Three": "3" elif (...) -- enter image description here, enter image description here
• 03:47
  How to make ffmpeg respect the "start_time" variable when combining cdg and mp3? - Steffen Poulsen Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to combine two .cdg and .mp3 files because I want to make a single .mkv file out of them. When I do it I get a .mkv file alright, but the audio is unfortunately not synced with the video. So, I was wondering why this is? Apparently I must be missing a parameter on my command or something. What I do is this: ffmpeg -y -i song.cdg -i song.mp3 -pix_fmt yuv420p -vcodec libx264 -acodec copy song.mkv It works fine, but in this particular case the result is out of sync by ~1.2 seconds. This varies per song, from 0 to a couple (...)

4 July

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 22:54
  rotate image frame while video recording in android - Rajneesh Newest 'ffmpeg' Questions - Stack Overflow
  i want to rotate image frame while video recording, i found one solution for rotate image byte array like below code. private byte[] rotateYUV420Degree90(byte[] data, int imageWidth, int imageHeight) byte[] yuv = new byte[imageWidth * imageHeight * 3 / 2]; // Rotate the Y luma int i = 0; for (int x = 0; x = 0; y--) yuv[i] = data[y * imageWidth + x]; i++; // Rotate the U and V color components i = imageWidth * imageHeight * 3 / 2 - 1; for (int x = imageWidth - 1; x > 0; x = x - 2) for (int y = 0; (...) --
• 20:16
  How create raw of rtp audio? - omides Newest 'ffmpeg' Questions - Stack Overflow
  I have one packet rtp, this packet have payload and payload is (PAYLOAD FILE): I get raw file for this payload with Audacity and result is (RAW FILE): How does convert fe to 00 00 80 39 ? I will do with python ? How arrange raw file for create stereo ? I will create stereo wav file of rtp. My file is float 32. Exp 2: Payload: RAW(Audacity): -- , , ,
• 19:42
  Correct way of recutting HLS playlist with FFMPEG - somerandomusername Newest 'ffmpeg' Questions - Stack Overflow
  I'm recording a stream on my server and after it finished I need to trim x seconds from the beginning of my video. My stream has master.m3u8 playlist and then 3 sub index_[0|1|2].m3u8 playlists. I'm trying different methods, they all seem to generate a result, but nothing as I expect. For example this : ffmpeg -i index_0.m3u8 -ss 30 -strict -2 -hls_time 6 output_0.m3u Seems to generate the correct nr. of *.ts files, but playlist is is only 30s long. Original #EXT-X-TARGETDURATION was set to 6, now it is 8, but actual size is a floating (...)
• 19:11
  FFserver command not found even install ffmpeg - foy Newest 'ffmpeg' Questions - Stack Overflow
  i follow instruction to install the ffmpeg (https://github.com/udacity/nd131-openvino-fundamentals-project-starter/blob/master/linux-setup.md) sudo apt install ffmpeg However, it does not install ffserver together while it should be after searching on internet. Below is my system configuration Ubuntu 18.04 Python3.7 ffmpeg 4.2.2 Command i want to execute sudo ffserver -f ./ffmpeg/server.conf Expected ffserver version x.x.x.x..... Current result ffserver command not found  (...) -- https://github.com/udacity/nd131-openvino-fundamentals-project-starter/blob/master/linux-setup.md
• 17:12
  permission is denied using Android Q ffmpeg": error=13, Permission denied - gowthami Newest 'ffmpeg' Questions - Stack Overflow
  I want to get the frames from the RTSP video using ffmpeg. But for android 10 above I am getting error as below. E/FFmpeg: Exception while trying to run: [Ljava.lang.String;ⓐ55e447f java.io.IOException: Cannot run program "/data/user/0/com.example.downloadimagefromurl/files/ffmpeg": error=13, Permission denied at java.lang.ProcessBuilder.start(ProcessBuilder.java:1050) at java.lang.Runtime.exec(Runtime.java:698) at java.lang.Runtime.exec(Runtime.java:563) at com.github.hiteshsondhi88.libffmpeg.ShellCommand.run(ShellCommand.java:10) at (...)
• 14:55
  FFmpeg problems encoding and concat - Random Newest 'ffmpeg' Questions - Stack Overflow
  I have 10 videos with different encodings. I would like to re-encode them to the same format and then join them all together into one long video. I have tried the following: Encoding: ffmpeg -y -i -c:v libx264 -crf 23 -preset medium -c:a aac -b:a 128k -movflags +faststart -vf scale=-2:720,format=yuv420p -r 60 -export.mp4 Concat: ffmpeg -y -f concat -safe 0 -i info.txt -s 1280x720 -crf 24 output.mp4 All files are set in the info.txt file, but the problem is that when I'm running the concat command, I just get "non-monotonous dts in output (...)
• 12:12
  Why does ffmpeg return "No such file or directory" - JackNewman Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to split a video file into 2 second increments and then merge the video back together. source_vid_path = r"C:\\SplitAndMergeVids\\Before\\before.mp4" ffcat_path = r'C:\\SplitAndMergeVids\\Chunk\\video.ffcat' chunks_path = r'C:\\SplitAndMergeVids\\Chunk\\chunk-%03d.mp4' segments_time = '2' cmd_input = rf'ffmpeg -fflags +genpts -i source_vid_path -map 0 -c copy -f segment -segment_format mp4 -segment_time segments_time -segment_list ffcat_path -reset_timestamps 1 -v error chunks_path' output = (...)
• 11:14
  Is there any way to capture a frame from RTSP stream with Esp8266? [closed] - Alex Newest 'ffmpeg' Questions - Stack Overflow
  I have a security camera, and I want to capture an image from the RTSP stream with ESP8266, I there any library that can do that?
• 10:01
  SRT protocol not found - Raspbery Pi 4 via ffmpeg - Tim Martin Newest 'ffmpeg' Questions - Stack Overflow
  We tried to stream from a rasp Pi 4 via SRT, but we got a error: "protocol not found". Our command line is: ffplay srt://127.0.0.1:9500?mode=listener&latency=20000 We tried the following guides: https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu how to compile ffmpeg with enabling libsrt https://www.undergroundnews.dk/index.php/item/107-rtmp-eller-srt-streaming Those guides worked so far and compiled but we still got the error message. Do you have any ideas how to get the srt protocol working on a pi via (...) -- https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu, https://www.undergroundnews.dk/index.php/item/107-rtmp-eller-srt-streaming
• 08:37
  ffmpeg and ffprobe file installation suggestion - Mithun Deshmukh Newest 'ffmpeg' Questions - Stack Overflow
  Where to run below code in WHM terminal or need to update in config.php? $ffmpeg_lib="/usr/bin/"; $ffprobe_lib="/usr/bin/"; $ffmpeg = FFMpeg\\FFMpeg::create(array( 'ffmpeg.binaries' => $ffmpeg_lib.'ffmpeg', 'ffprobe.binaries' => $ffprobe_lib.'ffprobe', 'timeout' => 3600, // The timeout for the underlying process 'ffmpeg.threads' => 12, // The number of threads that FFMpeg should use ), null);  (...)
• 08:26
  Unable to find a suitable output format for 'output' - Lewis Day Newest 'ffmpeg' Questions - Stack Overflow
  I am running this command via SSH; ffmpeg -f concat -safe 0 -i "https://domain.co.uk/playlist.txt" output -f flv "rtmp://ip/live/test" however I am getting the following error; libavutil 54. 31.100 / 54. 31.100 libavcodec 56. 60.100 / 56. 60.100 libavformat 56. 40.101 / 56. 40.101 libavdevice 56. 4.100 / 56. 4.100 libavfilter 5. 40.101 / 5. 40.101 libavresample 2. 1. 0 / 2. 1. 0 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 2.101 / 1. 2.101 libpostproc 53. 3.100 / 53. 3.100 [mov,mp4,m4a,3gp,3g2,mj2 ⓐ 0x9e1cc0] Auto-inserting (...)
• 08:10
  "Reading" the screen during ffmpeg recording - Zhiltsoff Igor Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to write down a script which would record my screen using ffmpeg and stop automatically. I wonder if there is a way to somehow “read” the current screen and check it. I imagine it go something like this in bash: ffmpeg -video_size 1024x768 -f x11grab -r 24 -s 1920x1080 -i :0.0 -f pulse -an -ac 2 -i default -c:v libx264 -preset ultrafast -b:v 500k $1& # the `&` is added at the end of the first line to run ffmpeg in bg. let “t=$2*95/100” # sleep $t until ??? do sleep 60 done killall -SIGINT ffmpeg Note: It would probably look (...)
• 07:40
  FFMPEG fnExtractFrameToJPG to DB sequelize - jjplack Newest 'ffmpeg' Questions - Stack Overflow
  after process the video i would like to pass the first frame screenshot to to db! I've tried by get the originalname or filename and did not get the exact thumb file So, i've tried also use fs but, the issue is that after the thumb creation the FFMPEG add the thumb number to identify the frame, and seems impossible to get the same thumb. Someone can help? here is the code fastify.route( method: "POST", preHandler: upload.single("video"), handler: async function(request, reply) const Post = fastify.sequelize;  (...)
• 07:29
  ffmpeg - what is the default format for .m4a output? - Evelyn Newest 'ffmpeg' Questions - Stack Overflow
  I have two commands, one in which I specify the output format as -f mp4: ffmpeg -i input.wav -ac 1 -c:a libfdk_aac -profile:a aac_he -vbr 2 -f mp4 test_export_1.m4a And one which lets ffmpeg guess based on the extension: ffmpeg -i input.wav -ac 1 -c:a libfdk_aac -profile:a aac_he -vbr 2 test_export_2.m4a This gives me two different results. The first one: $ffprobe test_export_1.m4a Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test_export_1.m4a': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2mp41  (...)
• 06:12
  MLT query video_codecs not listing libx264 - Terryn94 Newest 'ffmpeg' Questions - Stack Overflow
  Querying video codecs does not list libx264 as an available codec [terryⓐlocalhost ~]$ melt -query video_codecs | grep 264 - h264_nvenc - h264_v4l2m2m - h264_vaapi - nvenc_h264 - h264 - h264_cuvid But I can use it in a command such as: melt avformat:DarkStar.webm -consumer avformat:output.mp4 acodec=aac vcodec=libx264 and it works successfully. This is causing a problem with kdenlive. When selecting Render and choosing the format MP4 - the dominating format (H264/AAC) the render option is disabled with the error Unsupported (...)
• 02:10
  ffmpeg - Convert MP4 to WebM, poor results - fightstarr20 Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to encode a video to webm for playing through a HTML5 video tag. I have these settings... ffmpeg -i input.mp4 -c:v libvpx-vp9 -b:a 128k -b:v 1M -c:a libopus output.webm The results aren't great, video has lost lot's of it's sharpness. Looking at the original file I can see the bitrate is 1694kb/s. Are there any settings I can add or change to improve the output? Would maybe a 2 pass encode improve (...)
• 00:01
  Ffmpeg create gif from images with fullPath - padavan Newest 'ffmpeg' Questions - Stack Overflow
  I need create gif from images in one line (without external file with list images). I dont understand how create if i have full paths ? /home/userMo/test/dir1/4.jpg /home/userMo/pics/late/sada_342.jpg I try by concat , but its dont work ffmpeg -i "concat:/home/userMo/test/dir1/4.jpg|/home/userMo/pics/late/sada_342.jpg" -loop -1 out.gif

3 July

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:58
  How to convert mp4 Video to (.m3u8) playlist nodejs - Rohail Butt Newest 'ffmpeg' Questions - Stack Overflow
  I'm creating a Video Listening web Application. In which users can watch videos. How can I convert mp4 video to .m3u8 playlist in node?
• 21:50
  Create dynamic audio broadcast stream (node, ffmpeg, ..?) - TheCrunkiee Newest 'ffmpeg' Questions - Stack Overflow
  I have coded a videoboard. Like a soundboard but with video. You go to one URL that's just a black screen and another one which has a list of different videos (sender). When you click one of these videos it plays on the black screen (receiver). If you play 2 different videos at the same time both videos are shown next to each other on the receiver. That's working fine for several months now. It just creates multiple html video-elements with multiple source-tags (x265 mp4 and vp9 webm). I recently made a discord bot which takes the webm, extracts the opus stream and plays (...)
• 21:18
  DXVA2/D3D11 encoders not available in FFmpeg for no apparent reason - user1134621 Newest 'ffmpeg' Questions - Stack Overflow
  this is a weird one. I am trying to set up FFmpeg for hardware encoding of a live input into h264. I got it working fine on Linux with VAAPI. On Windows I was probably successful as well with NVENC but I do not have a NVENC capable card to check. What has been giving me a headache is encoding through DXVA2 or D3D11VA. FFmpeg picks up available hardware but it will not give me any suitable encoders. I even built FFmpeg myself to make sure that all the CONFIG_DXVA_HWACCEL switches are enabled, I can grep the binary for h264_dxva2 etc. and see that they are there. However, calling (...)
• 20:36
  FFMPEG making requests for each frame when decoding a stream, slow performance - Byti Newest 'ffmpeg' Questions - Stack Overflow
  I am having an issue playing MOV camera captured files from an iPhone. My FFMPEG implementation has no problem playing most file formats, this issue is exclusive only for camera captured MOV. When trying to open the file, I can see in the logs that many requests are made, each requests decoding only one frame, before making a new request which results the video being buffered extremely slowly. It takes roughly a minute to buffer about a few seconds of the video. Another thing to mention is that the very same problematic file is played without an issue locally. The (...)
• 19:38
  Pipe images to video with flutter_ffmpeg in flutter - Avi Sangray Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to manipulate images from image stream received from camera in flutter and then save them to a video using flutter_ffmpeg. i'm able to open a pipe but code is unresponsive after that here's the code controller.startImageStream((CameraImage camimage) //do manipulations and get pointer of the data returned from the function to a List List imgData = add_filters_and_text(camimage); imglib.Image img = imglib.Image.fromBytes(_savedImage.height, _savedImage.width, imgData);  (...)
• 19:31
  Why my concated videos resulting in fps drop? - swdev Newest 'ffmpeg' Questions - Stack Overflow
  I have one main .mp4 video and several logo .mp4 videos. I manage to create python script that eventually called ffmpeg.exe to create duplicate of that one main .mp4 video into distinct ..mp4 video with different logo Problem is, sometimes (I think if the file size is in more than 1GB) the generated video resulted in audio that plays sooner than the video. This is my command to produce that concatenated video: ffmpeg.exe -f concat -safe 0 -i "file_list_name" -c copy "target_file" -y file_list_name is .txt file with content such as: file 'logo1.mp4' file (...)
• 17:10
  Pipe images to video with flutter_ffmpeg - Avi Sangray Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to manipulate images from image stream received from camera in flutter and then save them to a video using flutter_ffmpeg. i'm able to open a pipe but code is unresponsive after that here's the code controller.startImageStream((CameraImage camimage) //do manipulations and get pointer of the data returned from the function to a List List imgData = add_filters_and_text(camimage); imglib.Image img = imglib.Image.fromBytes(_savedImage.height, _savedImage.width, imgData);  (...)
• 18:23
  Unrecognized option 'map 0:a?' - Bleakley Newest 'ffmpeg' Questions - Stack Overflow
  Trying to make derivatives of silent video files is failing. My understanding is adding a trailing ? to the -map option makes ffmpeg ignore that stream if it does not exist, but its not working. The full script is below. ffmpeg -n -vsync 0 -nostdin -v info -hide_banner -stats -i "$FILE" -movflags faststart -pix_fmt yuv420p -map 0:v -map 0:a? -c:v libx264 -vf "yadif=1,format=yuv420p" -crf "$CRFVALUE" -preset "$PRESETSPEED" -maxrate "$MAXRATE"k -bufsize 1835k -c:a aac -strict -2 -b:a 384k -f mp4 "$OUTPUT" withouth the ? after -map 0:a it works with files containing audio (...)
• 15:53
  How to ffprobe YouTube videos - nicholas Newest 'ffmpeg' Questions - Stack Overflow
  How can I get duration, width and height of YouTube video using FFprobe? I tried ffprobe -i https://www.youtube.com/watch?v=YkgkThdzX-8 -v quiet -print_format json -show_streams -hide_banner but it returns an empty json
• 15:38
  How can I do videos into a better format without losing resolution and quality? - Melissa Newest 'ffmpeg' Questions - Stack Overflow
  I have the job of developing a video converter program. I started to do a lot of research and development on this subject. I currently have a problem like this. The videos of the institution where I developed the converter are in mxf 50 megabit 4: 2: 2 format. They want me to turn these videos into a better format without losing resolution and quality. For example, they said I could try h.265. In my work, the resolution and the quality of the video change in direct proportion when the format changes, how can I overcome this with an algorithm? As I have just learned about the FFMPEG (...)
• 15:36
  ffmpeg4.1.3 built with Android NDK is 4 times bigger than linux gcc - ravin.wang Newest 'ffmpeg' Questions - Stack Overflow
  FFmpeg version: 4.1.3 android-ndk-r19c, 44 MB (armeabi-v7a) gcc-7: 9.7 MB (x86_64) The configuration is almost the same: For android-ndk-19c: I didn't link x264, under Linux x86_64, x264 is linked, so in theory Linux X86_64 links more code than the android one. #!/bin/bash # set the toolchain TOOLCHAIN=$NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64 CROSS_PREFIX=$TOOLCHAIN/bin/arm-linux-androideabi- rm -f $(pwd)/compat/strtod.o function build_one #configure ffmpeg w/o libx264 ./configure \\  (...)
• 14:58
  efficiently compressing an AVI video for PowerPoint - brownfox Newest 'ffmpeg' Questions - Stack Overflow
  I have a few AVI videos of very high bit-rate ( 6.0 Second video is 72 MB in size ). I want to put these videos in a Microsoft PowerPoint presentation, and since there are a few 10 such videos the size of the presentation file is getting too high. I want to compress these videos to have a reasonable size. I used ffmpeg to compress these videos. I used the command ffmpeg -i input.avi -vcodec msmpeg4v2 output.avi and it gave me a compressed video of size 9.0 MB. But these new videos are not playing smoothly in Powerpoint (they are playing in other media players (...)
• 13:39
  Is there any opportunity to detect that video was recorded vertically(portrait view), with FFMpegCore? - Vlad Mosienko Newest 'ffmpeg' Questions - Stack Overflow
  The problem is that when I take a video thumbnail, it looks flattened. I know that its possible to pass Size to FFMpeg.Snapshot() function, but I need to know is video vertical or not (to specify either I want to get portrait or landscape snapshot(e.g.: new Size(200,400) or new Size(400,200) ). Thank you for your answers!
• 13:31
  How to cut a video in specific start & end time in ffmpeg by Node JS? - Bilash Newest 'ffmpeg' Questions - Stack Overflow
  I want to cut a video in specific start & end time & save it. I am able to copy a full video but cant understand to how to cut specific time of that video by Node JS. Video copy code : ffmpeg('public/'+req.body.video) .on('end', function(err) if(!err) console.log('Done'); ) .on('error', function(err) console.log('error: '+err); callback(err);  (...)
• 12:47
  Matplotlib animation error : Requested MovieWriter (ffmpeg) not available, while ffmpeg is installed - Vivien Bonnot Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to animate colormapping representations of parametric complex fonctions using Python. I gradually put some things together, and checked that they worked properly. But I can't get the animation to be saved. I encountered this error : Requested MovieWriter (ffmpeg) not available However, ffmpeg is indeed installed on my system, on Windows console ffmpeg -version returns all sorts of informations about ffmpeg. Additionnaly, I also installed ffmpeg in Python scripts directory using pip pip install ffmpeg, which was successfull. I also set up ffmepg (...)
• 12:35
  FFMPEG gives pull error in the middle of song [discord.py] - Horizon Development Newest 'ffmpeg' Questions - Stack Overflow
  It stops playing in the middle of the song. error: [tls ⓐ 0000019a745b13c0] Error in the pull function. [matroska,webm ⓐ 0000019a745ad200] Read error [tls ⓐ 0000019a745b13c0] The specified session has been invalidated for some reason. Last message repeated 1 times ffmpeg options: ffmpegopts = 'before_options': '-reconnect 1 -reconnect_streamed 1 -reconnect_delay_max 5', 'options': (...)
• 12:29
  How can i increase my fps output ? (ffmpeg, nodejs) - Julien FEGER Newest 'ffmpeg' Questions - Stack Overflow
  I'm having quite the trouble understanding how fps output works. I have a video workflow through node and ffmpeg that transform picture into scrolling videos, here is the command : const ffmpeg = spawn('ffmpeg', ['-f', 'lavfi', '-i', 'color=s=1280x720', '-loop', '1', '-i', `$path/$video.name`, '-filter_complex', `[1:v]scale=1280:-2,format=yuv420p,fps=fps=60[fg]; [0:v][fg]overlay=y=-\\'t*h*0.02\\'[v]`, '-map', '[v]', '-t', `$clipDuration`, (...)
• 11:24
  ffmpeg video splitting less then 10 sec gives black clip - ubuntu 18.04 LTS - vipin Newest 'ffmpeg' Questions - Stack Overflow
  I am using FFmpeg version 4.3-2~18.04.york0 on AWS EC2 server for video splitting, while I split video less then 11 seconds the output.mp4 gives a blank video. I have tried the same thing with my local MAC and Ubuntu 19 but it works fine. ffmpeg -i input.mp4 -ss 00:01:10 -to 00:01:15 -c:v copy -c:a copy output.mp4
• 10:53
  How to send RTP stream to Janus from NGINX RTMP module? - Matéo Newest 'ffmpeg' Questions - Stack Overflow
  This is my first post here, even though this platform has already helped me a lot. So, i'm trying to create a stream and display it in a browser. I have already configured NGINX with the rtmp module and my stream works very well with HLS (between 5 and 10 seconds of latency). Now I would like to set up a low-latency stream and that's why I have installed the janus-gateway webRTC server that allows to take in input an RTP stream and provide in output a webRTC stream. Here's the schema I'd like to follow : OBS -> RTMP -> Nginx-rtmp-module -> ffmpeg -> (...)
• 10:41
  av_read_frame of ffmpeg in windows always returning random packet.stream_index - Hugo Charasss Newest 'ffmpeg' Questions - Stack Overflow
  I'm using ffmpeg to decode an rtsp stream, the av_read_frame is always returning random value on packet.stream_index. The stream have only 2 index, 1 video and 1 audio respectively on streams[0] and streams[1]. But when i call av_read_frame, i've random value on packet.stream_index and no data in the packet. If someone can help me, i'm beginner in FFMPEG. I add my simplified code to make you an idea of what i do : AVFormatContext* input_ctx = NULL; AVStream* video_st = NULL; AVCodecContext* decoder_ctx = NULL; AVCodec* (...)
• 10:38
  use ffmpeg in vba to change video format - Iban Arriola Newest 'ffmpeg' Questions - Stack Overflow
  I want to change the video format of the embedded videos that appears in a presentation. I achieve to export the video file to another folder using the following code: Dim Finame As Variant Dim oApp As Object Dim StoreFolder As Variant Dim Videoname As Variant Dim FileNameFolder As Variant MkDir "C:\\template\\videoZip" Set oApp = CreateObject("Shell.Application") FileNameFolder = "C:\\template\\videoZip\\" Finame = ActivePresentation.Path & "\\" & ActivePresentation.Name StoreFolder = "C:\\template\\created_files\\"  (...)
• 09:47
  FFmpeg concat fade effect - TheCow Newest 'ffmpeg' Questions - Stack Overflow
  I'm currently using this command: ffmpeg -f concat -safe 0 -i info.txt -s 1280x720 -crf 24 output.mp4 to join all videos in a folder. Before running the command I have entered "file " into the info.txt file. This works perfectly, but I would like to get a fade effect between all videos (crossfade). How is this possible? I have tried adding the following argument, but it didn't work. I found it online on an old post. -filter_complex xfade=offset=4.5:duration=1 If anyone has a simple way of doing it, please let me know. I'm using the latest FFmpeg, (...)
• 07:00
  How to encode jpeg images to H264 very fast (transform images to video) - Paul Newest 'ffmpeg' Questions - Stack Overflow
  I have 30 JPEG images (.jpg) at a resolution of 480 x 640. Each image takes aboout 20KB (all of them takes about 600KB). I am using FFmpeg command to encode these images into a video in H264 format. I need this to be done very fast - about 1 second. Using the classic command: ffmpeg -y -f image2 -r 1/5 -i image_%d.jpg -c:v libx264 -r 30 video.mp4 takes about 90 seconds. After adding -preset ultrafast: ffmpeg -y -f image2 -r 1/5 -i image_%d.jpg -c:v libx264 -preset ultrafast -r 30 video.mp4 the (...)
• 04:50
  Output both m3u8 and segment files to stream - DrNickEgg Newest 'ffmpeg' Questions - Stack Overflow
  This is likely a small fix but I am trying to read an .mp4 file from a download stream and convert it to HLS. I created a write stream to output the conversion. I am using google cloud storage to get the read/write streams. The problem is, the segments are not streamed and are exported locally, while the .m3u8 file is sent properly via the pipe. Is there a way to stream both the .ts and .m3u8 playlist to my pipe output, so nothing gets exported locally? const readStream = gcp.bucket().file('video.mp4').createReadStream(); const outputStream = (...)
• 03:34
  A specific MP4 file is not playable with avfoundation in iOS - Rabel Ahmed Newest 'ffmpeg' Questions - Stack Overflow
  I have an mp4 video file that I want to play it in iOS using avfoundation. Unfortunately, the file is not being played and unable to save into the default gallery(photos) even it has h264 video codec and aac audio codec. And it is only playable when I reencode it using ffmpeg. I want to know why the file only becomes playable after reencoding the video? Not Playable(originalFile.mp4) vs Playable File(outputFile.mp4) Information Comparison File is playable with avfoundation when these commands are being applied: ffmpeg -y -hide_banner -i originalFile.mp4 -f mp4 (...) -- , https://drive.google.com/file/d/1-yZFL0EsLztMIfwU79Al6dv8gdwJyGAD/view?usp=sharing, https://www.diffchecker.com/VgZL66QB
• 00:21
  ffmpeg set matroska "TRACK" metadata - Tobias Brohl Newest 'ffmpeg' Questions - Stack Overflow
  I want to set the "TRACK" field of a matroska container (see https://www.matroska.org/technical/tagging.html, section Target types) using ffmpeg. When using -metadata TRACK=7 ffmpeg sets the value of PART_NUMBER to 7 (which means Disc 7, according to spec and common implementations), but not "TRACK". How do I make ffmpeg write to the "TRACK" field? -- https://www.matroska.org/technical/tagging.html

2 July

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 23:23
  Use ffprobe on Sagemaker Jupyter Notebook: /bin/sh: 1: ffprobe: not found - Guu Newest 'ffmpeg' Questions - Stack Overflow
  I need to use FFprobe to get the metadata(the orientation of the video) of videos on SageMaker Studio. Even I installed FFmpeg and FFprobe via pip install, the notebook doesn't recognize the packages. /bin/sh: 1: ffprobe: not found It is tricky since I've already tried to install them on System terminal and it worked, but it still doesn't work on the Image terminal or Jupyter Notebook. Is that because of the dependencies? I've checked other ways to get the metadata but couldn't find one working. I could get simple metadata via hachoir-metadata but (...)
• 23:19
  Set name of matroska attachment using ffmpeg - Tobias Brohl Newest 'ffmpeg' Questions - Stack Overflow
  So when attaching files to a matroska container they get a name, normally their original name. However when you are running windows and you supply the full path to the file you want to attach, ffmpeg sets that full path as name of the attachment. How can I rename that attachment, preferably in the same command as the attachment process?
• 23:17
  How to concat 2 aac files using ffmpeg with delay between? - nuclear kote Newest 'ffmpeg' Questions - Stack Overflow
  I try to concat 2 aac files: ffmpeg -i 2.aac -i 3.aac -filter_complex "[0]asetpts=0;[1]asetpts=8000; concat=n=2:a=0:a=1 [aout]" -map "[aout]" out.aac first to 0 second, second to 8's second I got the following error: Cannot find a matching stream for unlabeled input pad 0 on filter Parsed_concat_2 What I'm doing wrong?
• 22:21
  How does one go about undoing an avformat_seek_file call in libavcodec? - John Allard Newest 'ffmpeg' Questions - Stack Overflow
  I have an application written around libavcodec that sometimes attempts to seek ahead in a video while performing some work. The call to avformat_seek_file can only seek to a keyframe, so sometimes I end up in a situation where it ends up seek backwards from my current position in the decoding routine causing me to have to repeat work. For example, if I'm on frame 150 and I want to seek to frame 200, but the only key frames in the file are on frames 1 and 100, this call will have me seek back to frame 100, meaning I now have to decode 100 frames to get to 200 instead o 50 frames to (...)
• 17:38
  Using NReco ConvertLiveMedia with FFMPEG - Alex Newest 'ffmpeg' Questions - Stack Overflow
  I'm working with video files in my .net application using NReco's ffmpeg wrapper. I can easily convert videos if I point the ConvertMedia to an existing file with a path, but I really want to convert the file via a stream and not a path (before even saving it). Next to the ConvertMedia method, there's also a ConvertLiveMediaTask method that accepts a stream instead of a path, but that's for streaming videos or something? It says I can create a task for live stream conversion (real-time) that reads data from stream and writes conversion result to the file, but (...)
• 16:59
  Form in Rails with ffmpeg and carrierwave - Yozuu Newest 'ffmpeg' Questions - Stack Overflow
  I would like on rails that a User without account can upload a video and then that the server modifies it with ffmpeg and that then the server deletes the video after the user downloads it. But I don't really find documentation on this subject. How can I do that ? What are the best Gem ? Thank you for your help.
• 16:36
  Pipe opencv images to ffmpeg using python - jlarsch Newest 'ffmpeg' Questions - Stack Overflow
  How can I pipe openCV images to ffmpeg (running ffmpeg as a subprocess)? (I am using spyder/anaconda) I am reading frames from a video file and do some processing on each frame. import cv2 cap = cv2.VideoCapture(self.avi_path) img = cap.read() gray = cv2.cvtColor(img[1], cv2.COLOR_BGR2GRAY) bgDiv=gray/vidMed #background division then, to pipe the processed frame to ffmpeg, I found this command in a related question: sys.stdout.write( bgDiv.tostring() ) next, I am trying to run ffmpeg as a (...)
• 14:48
  FFMPEG how to use https dynamic url as input for amovie filter - Johny Sharma Newest 'ffmpeg' Questions - Stack Overflow
  Basically what i am trying to do is to calling a dynamic php url which is generating a audio file for me and just want to use that file as an input for amovie filter. I hope you have understand my question. What i have done so far? I have a FFMPEG code which is: ffmpeg-y -i 'bg-file.mp3' -c copy -map 0:0 -map 1:0 -filter_complex "amovie='/auth.php?input=string&l=hi&f.mp3':loop=999[sc][mix];[0:a][sc]sidechaincompress=threshold=0.100:ratio=20,volume=10dB:precision=fixed[bg], [bg][mix]amix=duration=first" -c:a libmp3lame -ac 2 (...)
• 13:44
  Remove black bars from DV video using ffmpeg [closed] - AustinMaxi1750 Newest 'ffmpeg' Questions - Stack Overflow
  I have copied all my Panasonic DV videos (PAL) from the 1990s to my PC as 'dv avi' using Windows movie maker in the original quality (approx 13GB per hour of video). At the time the recordings were made I set the Panasonic camera to 16:9. However searching various forums indicates it was an illusion of 16:9 and black bars were superimposed on the 4:3 picture to give a cinematic feel. I have read also that the DV pixels are not square. As a result all my 16:9 recordings have black bars at the top and bottom when viewed on a 16:9 monitor. The file properties are as (...) -- image with black bars, image without black bars
• 12:27
  How can i do Facebook Live (page) using FFMPEG - Amjad Dader Newest 'ffmpeg' Questions - Stack Overflow
  SOLVED & EDITED - Catch: Doing live stream on Facebook with FMMPEG. In past it was easy i did many times as facebook was using rtmp. But now facebook is using RTMPS so i am getting different errors i have tried 100 commands. I have a image test.png and a audio file test.m4a (its a podcast) and facebook stream key is 1234. ( i have tried 100 types of commands so cant post here and cant post errors aswell.) so please can someone help me to go live on my facebook page with image+m4a file. i prefer centos but i will manage ubuntu if you (...)
• 11:20
  How to get video duration, dimension and size in PHP? - Chandan Newest 'ffmpeg' Questions - Stack Overflow
  I want to know how to get the duration, dimension and size of uploaded video file in PHP. The file can be in any video format.
• 11:06
  Pyinstaller "Failed to execute script pyi_rth_pkgres" and missing packages - gurnben Newest 'ffmpeg' Questions - Stack Overflow
  This is my first time posting a question here as most of my questions have already been answered by someone else! I am working on a GUI application in python and am attempting to use pyinstaller to package it into a single folder and .exe for easier portability. Currently, I am using windows 10 and anaconda3 to manage my python packages. The application relies on tkinter, pillow, numpy, scikit-learn, opencv, ffmpeg, and matplotlib. The application is formatted with a main GUI.py file that creates objects of a number of other files (many of which are stored in a subfolder as this GUI is (...)
• 10:40
  Ffmpeg concat on windows return protocol error - padavan Newest 'ffmpeg' Questions - Stack Overflow
  hi i have ffmpeg on win10. I try concat files: ffmpeg -i "concat:1.jpg|2.jpg" out.gif but always get only one\\first image in out.gif result. Late i find on manual: "This is analogous to using cat on UNIX-like systems or copy on Windows." I try ffmpeg -i "copy:1.jpg|2.jpg" out.gif and get error: copy:1.jpg|2.jpg: Protocol not found
• 10:06
  Discord bot: Fix ‘FFMPEG not found’ - Travis Sova Newest 'ffmpeg' Questions - Stack Overflow
  I want to make my Discord bot join voice chat but every time I make it I get a error into log(cmd) saying, FFMPEG not found, please help me. Picture of the error: This is the code: client.on('message', message => // Voice only works in guilds, if the message does not come from a guild, // we ignore it if (!message.guild) return; if (message.content === '/join') // Only try to join the sender's voice channel if they are in one themselves if (message.member.voiceChannel)  (...) --
• 09:13
  FFmpeg - Extracting video and audio from transport stream file (.ts) - Passepartout Newest 'ffmpeg' Questions - Stack Overflow
  I wish to extract the audio and video of a certain program in a transport stream file (.ts) by specifying its PID without losing quality and using the same codec in the resulting file (the output file is a MPEG). Is that even possible with FFmpeg? If so, how can I do it? So far, I've come to this command: ffmpeg -i tsfile.ts -vcodec copy -acodec copy -q:v 1 output.mpg Edit: Note that the file output.mpg is created. The file contains the video but the audio isn't attached (no sound). Also, I am unable to specify the program PID to (...)
• 08:24
  Convert a video from stream with ffmpeg - Alex Newest 'ffmpeg' Questions - Stack Overflow
  I'm working with video files in my .net application using NReco's ffmpeg wrapper. I can easily convert videos if I point the ConvertMedia to an existing file with a path, but I really want to convert the file via a stream and not a path (before even saving it). Next to the ConvertMedia method, there's also a ConvertLiveMediaTask method that accepts a stream instead of a path, but that's for streaming videos or something? It says I can create a task for live stream conversion (real-time) that reads data from stream and writes conversion result to the (...)
• 06:14
  RTP: dropping old packet received too late - Yves Newest 'ffmpeg' Questions - Stack Overflow
  I'm using JavaCV to process the RTSP video stream. What I've done is to grab each frame of RTSP stream and write it into a JPG file. Here is my code: package test; import org.bytedeco.javacv.FFmpegFrameGrabber; import org.bytedeco.javacv.Frame; import org.bytedeco.javacv.Java2DFrameConverter; import javax.imageio.ImageIO; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; public class PravegaCameraConnector public static void grabberVideoFramer() Frame frame = null; int flag = (...)
• 06:07
  How to detect if a RTSP video stream is up or down - Yves Newest 'ffmpeg' Questions - Stack Overflow
  I'm using JavaCV to process the RTSP video stream. What I've done is to grab each frame of RTSP stream and write it into a JPG file. Here is my code: package test; import org.bytedeco.javacv.FFmpegFrameGrabber; import org.bytedeco.javacv.Frame; import org.bytedeco.javacv.Java2DFrameConverter; import javax.imageio.ImageIO; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; public class PravegaCameraConnector public static void grabberVideoFramer() Frame frame = null; int flag = (...)
• 05:54
  FFmpeg - Change resolution of the video with aspect ratio - Arthur Newest 'ffmpeg' Questions - Stack Overflow
  all. How to change resolution of the video with aspect ratio with FFmpeg? There are options http://manpages.ubuntu.com/manpages/oneiric/man1/ffmpeg.1.html -s size Set frame size. The format is wxh (ffserver default = 160x128, ffmpeg default = same as source). The following abbreviations are recognized: and -aspect aspect Set the video display aspect ratio specified by aspect. aspect can be a floating point number string, or a string of the form num:den, where num and den are the numerator and (...) -- http://manpages.ubuntu.com/manpages/oneiric/man1/ffmpeg.1.html
• 04:04
  ffmpeg avformat_open_input error -14 Bad address [closed] - zhhello Newest 'ffmpeg' Questions - Stack Overflow
  As you see,I don't know why i get this error.I tried different parameters in mehtod avformat_open_input like *avformat_open_input(&ic,path,0,0)*in FFmpeg used in android ,etc,but always get the same error result. In addtional,I have make the permissions in simulator.And I don't think this problem is "file not find",cause it is error -2.Any ideas? av_register_all(); avformat_network_init(); AVFormatContext *ic = NULL; char path[] = "/sdcard/1.mp4"; //char path[] = "/sdcard/video.flv"; int re = (...)
• 03:12
  How do I toggle individual codec options in libavcodec (specifically h264_options) - John Allard Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to figure out how to enable enable_er option as is defined in h264dec.c in libavcodec. This is defined as an AVOption as part of the AVCodec.priv_class.option field. I can't figure out if this is some sort of compile-time option or if it's an option that I can enable via the av_dict_set method when initializing an AVCodec via avcodec_open2. I'm talking about these options in h264dec.c #define OFFSET(x) offsetof(H264Context, x) #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM static const AVOption h264_options[] =  (...)
• 02:13
  Trouble automating concatination (merging) of VOB files from DVD with FFMPEG - Randy Newest 'ffmpeg' Questions - Stack Overflow
  I have a library of decrypted DVDs, which all have their video in a series of VOB files within the usual VIDEO_TS folder. I wondered if I could use FFMPEG to combine them into a single MPEG files. So first I found this (this assumes 2 VOB files) from an old non-stack exchange post, and it works... ffmpeg -i "concat:VTS_01_1.VOB|VTS_01_2.VOB" -f DVD ffmpeg complains sometimes about possible missing timestamps, but I've not seen any issues in the video, audio, or synchronization. This works too with slightly different complaints ffmpeg -i (...)

1 July

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:15
  HTML5 video player some mp4 files not playing chrome - Marc Newest 'ffmpeg' Questions - Stack Overflow
  So I'm trying to build a personnal streaming platform and I've done my best to follow the recommandations I've found everywhere for better compatibility/quality when streaming. So I'm systematically encoding my video to video codec h264 with mp4 container with ffmpeg using this command: ffmpeg -i input -vcodec libx264 -maxrate 8000k -bufsize 1000K -minrate 10k -crf 24 -ab 192k -movflags faststart output.mp4 However, I occasionaly fall on some reluctant mp4 that will play fine on Edge and Firefox but won't on Chrome. Loading seems (...)
• 18:04
  How to make a batch file wait for all processes of another call to finish before continuing - Roman Stadler Newest 'ffmpeg' Questions - Stack Overflow
  The idea of this script is to take a (lecture) video, split it into smaller pieces, remove the silence for each one, and merge them back together, for increased performance, since the silence-removing script does not scale that well for larger videos. The 3 batch scripts below work perfectly when started manually after eachother, but when trying to launch them from a single .bat file, I can't prevent them from starting at the same time, which creates errors at the merging stage. These are the 3 batch files: split.bat startall.bat merge.bat  (...) -- Video-Remove-Silence
• 17:32
  Looking to insert a clickable image in a video with php - mudassarqureshi Newest 'ffmpeg' Questions - Stack Overflow
  Hi I am looking to insert a clickable image in a video. to make a video interactive. Basically I have a form with 3 fields upload-video, upload-photo and a URL. What I am looking for is that when the user uploads these 3 fields the image will become the part of the uploaded video and upon clicking that image it will open a URL that was added in the form. after that I have to provide the embed code of that interactive video to users. Is there any way to achieve that functionality with php? I have looked into ffmpeg but I am not sure that it will do exactly what I (...)
• 16:52
  Ffmpeg stream from 2 pipes in Python - thekangaroo Newest 'ffmpeg' Questions - Stack Overflow
  I want to create a UDP stream from 2 input pipes (video from an image pipe, and audio from multiple wav files or another pipe) and generate one combined output. Ideally this would be done using ffmpeg for python, and no command line. All my tests failed. I tried: ffmpeg.input('pipe:pipeout').output('udp://127.0.0.1:1234', r='30', ss='0').global_args('-re').run() but the framerate is too fast and also it gets the output "trailing options were found on the commandline" and generates no (...)
• 15:02
  FFmpeg / libmp3lame crash while converting from .wav to .mp3 with vibrato - Chitrang Newest 'ffmpeg' Questions - Stack Overflow
  I have integrated mobile-ffmpeg-full-gpl:4.3.1.LTS library in my android app. And trying to convert .wav file to .mp3 format with vibrato option and libmp3lame encoder. ffmpegCommand = "-i input.wav " + "-af vibrato=f=4 " + "-c:a libmp3lame " + "-b:a 96k " + "-ac 1 " + "-ar 44100 " + "-y output.mp3" FFmpeg Logs: a.b.com I/mobile-ffmpeg: Loading mobile-ffmpeg. a.b.com I/mobile-ffmpeg: Loaded mobile-ffmpeg-full-gpl-arm64-v8a-4.3.1-lts-20200125. a.b.com D/mobile-ffmpeg: Callback thread started. a.b.com (...) -- mobile-ffmpeg-full-gpl:4.3.1.LTS, vibrato, link1, link2
• 16:00
  FFMPEG hwaccel convert WEBM to MP4 video failed: could not find codec parameters - Yen Nguyen Newest 'ffmpeg' Questions - Stack Overflow
  I use FFMPEG to convert webm videos into mp4 format using a Nvidia GPU GeoForce GTX 1660 card on Windows 10. It has worked perfectly since the beginning for few months but now it's stopped working with strange error as below: [h264 ⓐ 0000013d8b5eee00] missing picture in access unit with size 431 [extract_extradata ⓐ 0000013d8b6aef40] No start code is found. big-buck-bunny-trailer.webm: could not find codec parameters FFMPEG version and Nvidia driver version are the same as before it just crashed overnight without a clue. I tried Googling around and did (...)
• 15:55
  capturing specific window using fluent-ffmpeg - prajwal kumar Newest 'ffmpeg' Questions - Stack Overflow
  I am using following command in command line to capture "xray 0.1" window. It works. ffmpeg -f gdigrab -framerate 30 -i title="xray 0.1" output.mkv I am trying to construct an equivalent command in nodejs using "fluent-ffmpeg" library. Following code snippet captures whole desktop. But I want only "xray 0.1" to be captured. How can I specify this in using "fluent-ffmpeg" library? var ffmpeg = require('fluent-ffmpeg'); var command = ffmpeg("desktop") .inputOptions(['-f gdigrab' (...)
• 13:40
  How to use ffmpeg lib transform mp4(h264&aac) to m3u8 (hls) by C code? - itning Newest 'ffmpeg' Questions - Stack Overflow
  I used official examples transcoding.c but console print pkt->duration = 0, maybe the hls segment duration will not precise. I use this code to set duration but invalid。 av_opt_set_int(ofmt_ctx->priv_data, "hls_time", 5, AV_OPT_SEARCH_CHILDREN); In command line ffmpeg -i a.mp4 -codec copy -vbsf h264_mp4toannexb -map 0 -f segment -segment_list a.m3u8 -segment_time 10 a-%03d.ts How to use C code to achieve this command? this is my code: /** * ⓐfile * API example for demuxing, decoding, filtering, encoding and muxing * ⓐexample (...)
• 11:30
  When I tried to install react-native-ffmpeg, Build getting failed throwing error - srinivas Newest 'ffmpeg' Questions - Stack Overflow
  Version Using compileSdkVersion 29 buildToolsVersion "26.0.0" What went wrong: Could not determine the dependencies of task ':react-native-ffmpeg:compileDebugAidl'. Could not resolve all task dependencies for configuration ':react-native-ffmpeg:debugCompileClasspath'." /> Could not find com.arthenica:mobile-ffmpeg-com.febbler:4.3.1. Required by: project :react-native-ffmpeg --
• 10:49
  Make a numpy array look like a video file - zagaroo Newest 'ffmpeg' Questions - Stack Overflow
  I am building a Python web app for visualization of video data. The video is a T x X x Y array stored as an HDF5 file and is too large to load into memory. However, I have the following libraries. Library #1 is an HDF5 reader that allows me to do random access on the video file on disk, so I can get arbitrary frames as numpy arrays. Library #2 (streamlit) is a web library that allows me to display standard video types (mp4, h264, etc.) [API link]. I am thinking that all I need to do is write an intermediate class that behaves like a BytesIO object and gets frames as they (...) -- [API link]
• 11:39
  bash - forcing globstar asterisk expansion when passed to loop - Kittywhiskers Van Gogh Newest 'ffmpeg' Questions - Stack Overflow
  I am attempting to write a script that finds the extension of all files within a directory and normalise them using ffmpeg to conform to a singular file format, codec and resolution. #!/usr/bin/env bash # We need to use globstar because we want to run this recursively (bash >4.0) # This script won't run on macOS unless you install bash from homebrew shopt -s globstar nullglob # macOS doesn't have some stuff that we need, presuming you have homebrew already # then run "brew install ffmpeg rename" if ! [ -x "$(command -v ffmpeg)" ] || ! [ -x (...) -- ShellCheck
• 12:04
  libav/ffmpeg: where is data buffer storage? - nguyenthachung Newest 'ffmpeg' Questions - Stack Overflow
  I'm using libav/ffmpeg to play some DASH livestream. My case: player is playing normally -> pause for 3 4 minutes -> play again -> Player continue to play without interrupted, not jump to realtime. Is libav/ffmpeg cached buffer or stored to somewhere?
• 06:30
  FfmpegCore how can I set delay while I am joining multiple video files - Masum Ahammed Newest 'ffmpeg' Questions - Stack Overflow
  I am using https://github.com/rosenbjerg/FFMpegCore. I am splitting the videos and then I am trying to compose them by adding some images and I would like some delays when the images are shown. What is the Delay function in ffmpegCore? -- https://github.com/rosenbjerg/FFMpegCore
• 05:38
  How to get the video's duration or number of frames in ffmpeg filter - Reasno Newest 'ffmpeg' Questions - Stack Overflow
  I'm writing a filter in ffmpeg and I have to get the duration or number of frames in filter_frame function. But the parameters of "filter_frame" function only consist of AVFilterLink and AVFrame: static int filter_frame(AVFilterLink* link, AVFrame* in) AVFilterContext* avctx = link->dst; ExtractContext* privCtx = (ExtractContext*)avctx->priv; AVFilterLink* outlink = avctx->outputs[0]; //here I want to get the duration of total number of frames: I can't find attributes which is related to duration of frame numbers in either class. I have (...)
• 05:32
  How to get the duration or total number of frame in ffmpeg filter? - Reasno Newest 'ffmpeg' Questions - Stack Overflow
  I'm writing a filter in ffmpeg in which I have to get the duration of the video. The filter_frame function looks like followings: static int filter_frame(AVFilterLink* link, AVFrame* in) AVFilterContext* avctx = link->dst; ExtractContext* privCtx = (ExtractContext*)avctx->priv; AVFilterLink* outlink = avctx->outputs[0]; //here I want to get the duration or total number of frames: I have to get the duration or total number of frames in this function, but the only parameters of the function is AVFilterLink and AVFrame in which I cant find (...)

30 June

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 23:24
  JavaFX media issue on Ubuntu : Could not create player - parsa2820 Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to play mp3 file on JavaFX-11.0.2 on Ubuntu-20.04 using JDK-13.0.2 but I keep getting this same error every time. While I was searching for that I found that JavaFX uses older version of some libraries(See this issue on github). So I compiled and installed ffmpeg-3.1.11 from source. But the same exception is thrown. I put my code and error message bellow. I stuck on this for days so I really appreciate any help. Thanks. note : This is not duplicate qeustion. All other questions regarding to this error happend on different versions and had different causes. I tried most of (...) -- See this issue on github
• 22:40
  ffmpeg live stream to Youtube command line - brainoverflowse Newest 'ffmpeg' Questions - Stack Overflow
  Would anyone assist myself with creating the correct ffmpeg command line for an audio and video rtsp camera feed that is 1440 and scale it to 1080 with a max bitrate of 10000?
• 22:29
  Server requirements ffmpeg for insert text a small video - Alpay Deniz Karakurt Newest 'ffmpeg' Questions - Stack Overflow
  I will use ffmpeg to write a username and add a picture to a 30 second video. 618 users will benefit from this service per day. How do you think a server needs? Thank you for your help
• 21:50
  How to build ffmpeg.js via provided Unix code in Cygwin? - rusty grad Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to build ffmpeg.js and add it to my program in windows. Docker does not work on my version of windows. The creator provided how to build it in Unix on his github page as follows: sudo apt-get update sudo apt-get install -y git python build-essential automake libtool pkg-config cd ~ git clone https://github.com/emscripten-core/emsdk.git && cd emsdk ./emsdk install latest ./emsdk activate latest source emsdk_env.sh cd ~ git clone https://github.com/Kagami/ffmpeg.js.git --recurse-submodules && cd ffmpeg.js make How (...) -- his github page
• 21:00
  How to stream RTSP url as HLS stream in browser - Rajan Sharma Newest 'ffmpeg' Questions - Stack Overflow
  I have multiple IP cameras and for each camera, I have an RTSP source URL (for live feed) rtsp://admin:475ⓐ13.157.195.127:664/Streaming/Channel/100021?transportmode=unicast&profile=Profile_100021 I want to convert this RTSP stream to the HLS stream (to display it on the web). I googled regarding this and got a few libraries gstreamer and ffmpeg but I am not able to find a clear way to do this. How can I achieve this? Are there any better open-source libraries or cloud services available for this (...)
• 20:41
  Streaming raw sound with FFMPEG - Dr_Click Newest 'ffmpeg' Questions - Stack Overflow
  I'm using the ffmpeg library to decode / encode audio in JAVA, using the Process objets. The aim is to got the raw datas decoded by ffmpeg in my JAVA code and then, to send them back to ffmpeg to generate a stream or create a file. As JAVA sounds only allow wav audio datas, I made a first try with this command line : ffmpeg -i http://199.180.75.118:80 -acodec pcm_s16le -ar 44100 -ac 2 "/home/dr_click/montest.wav" It works. But, my goal is to get the frames on the fly and not a file. I thought about using a pipe but it seems it will work only with (...)
• 19:42
  Using FFMPEG , Can I extract subtitles from any type of container? - Reshma Walhekar Newest 'ffmpeg' Questions - Stack Overflow
  I have tried extracting subtitles from MKV , I would like to know can I extract it from any Container like MP4 or any other video file container.
• 18:35
  Extract closed captions VTT from stream using ffmpeg - EK0 Newest 'ffmpeg' Questions - Stack Overflow
  I can extract closed caption information from an mp4 file using ffmpeg v. 3.4.7 thus: ffmpeg -f lavfi -i movie="sample.mp4[out+subcc]" -map 0:1 -c:s webvtt /tmp/output.vtt The file was obtained by capturing a live HLS stream containing closed captions. I would like to extract the closed captions directly from the stream, instead after storing the video in a file. I've tried various things, including: ffmpeg -f lavfi -i movie="http://example.com/stream.m3u8[out+subcc]" -map 0:0 -c:s webvtt /tmp/output.vtt But the movie filter does not recognize (...) -- ffmpeg filter documentation
• 16:23
  Use debug log from ffmpeg mpdecimate to remove frames of another input file - Preexo Newest 'ffmpeg' Questions - Stack Overflow
  I have a security cam footage, which I'd like to remove all frames from which are don't contain any change. I followed the question and answer on Remove sequentially duplicate frames when using FFmpeg But my footage has a timestamp as part of the picture, so even if the image itself doesn't change, the timestamp still changes every second. My idea to ignore the timestamp for the mpdecimate option on ffmpeg: The original file is called security_footage.mp4 Crop the timestamp away, using IMovie, creates file: security_footage_cropped.mp4 Run ffmpeg (...)
• 16:19
  Audio fade in and looping - BIOStheZerg Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to put some background music to a video with a person speaking. The background music should face in over a few seconds. The music is a short snippet, which loops really well. I tried to loop it via ffmpeg so that I have everything in one command: ffmpeg -i video_file.mp4 -f lavfi -i amovie=audio_file.wav:loop=0 -filter_complex '[0:a] volume=2.0 [voice]; [1:a] afade=in:st=0:d=5, volume=0.1 [soundtrack]; [voice][soundtrack] amix=inputs=2:duration=shortest' -codec:v copy out_file.mp4 (this is a simplified version, the real one has a side chain compress (...)
• 15:57
  webm to mp4 conversion using ffmpeg - Pavan K Newest 'ffmpeg' Questions - Stack Overflow
  When I try to convert a webm file to mp4 the output is very very choppy and it appears as if many frames have been dropped by ffmpeg I used the following commands to convert ffmpeg -i movie.webm movie.mp4 ffmpeg -i movie.webm -vcodec libx264 movie.mp4 ffmpeg -i movie.webm -vcodec libx264 -qscale 0 movie.mp4 All of them have the same problem. When I use ffprobe it seems to show the frames more or less properly. UPDATE: built on Jun 14 2013 14:31:50 with gcc 4.7 (Ubuntu/Linaro 4.7.2-2ubuntu1) configuration: (...)
• 15:16
  Mute specified sections of an audio file using ffmpeg - kimadactyl Newest 'ffmpeg' Questions - Stack Overflow
  I have a JSON file containing regions that I want to mute in a given audio file. How can I process the audio file to mute the file between the listed sections?
• 15:02
  How can i combine 4 ffmpeg commands and run it in the background - Js doee Newest 'ffmpeg' Questions - Stack Overflow
  i am building a web app, i want to first convert the uploaded video to mp4 then add a picture watermark to the video then i want to add text watermark to the video and finally it will get the thumbnail of the video, i have 4 ffmpeg commands that does that but it takes time to complete, i want to know if i can combine the 4 ffmpeg commands and run it in the background, Here is the 4 ffmpeg command $cmd1 = "$ffmpeg -i $file_name -qscale 0 $new_file"; $cmd2 = "$ffmpeg -i $new_file -i watermark.jpg -filter_complex overlay=W-w-5:H-h-15 $Wfile"; $cmd3 = "$ffmpeg -i (...)
• 14:42
  Generate Multiple Thumbnails from Multiple Videos (with FFmpeg) - netsonicyxf Newest 'ffmpeg' Questions - Stack Overflow
  I have multiple videos in different locations, something like: D:\\Folder 1\\001.ts E:\\Folder 2\\abc.avi F:\\Foder X\\视频.mp4 (some videos name are in non-English languages) And I already have a filelist.txt with these file path in it file 'D:\\Folder 1\\001.ts' file 'E:\\Folder 2\\abc.avi' file 'F:\\Foder X\\视频.mp4' For each video, I want to generate 3 images, starting from 00:00:10, then next image every 10 sec. The name of the image should be the name of the video + number staring from 1, (...)
• 14:41
  Adding codecs for ffm ffmpeg handling - alanionita Newest 'ffmpeg' Questions - Stack Overflow
  Whenever I start an ffserver with an ffm feed I get the following error [ffm ⓐ 0x7fc81318b160]Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead. How can I define which codecs are used by ffmpeg?
• 13:23
  dowload video with csv file using youtube-dl and ffmpeg but ffmpeg not working - Rupendra Singh Rathore Newest 'ffmpeg' Questions - Stack Overflow
  def start(self, newfile=None, part=None): ydl_opts = with youtube_dl.YoutubeDL(ydl_opts) as ydl: while True: videos = self.get_videos() print(' videos to go'.format(len(videos))) # print no. of video remaining video = get_first_item(videos) # get next video for downloading print(video) if video is None: # check if video is there or not break c = f'ffmpeg $(youtube - dl - g ydl.download([video]) | sed "s/.*/-ss 00:05 -i &/") - t 1: 00 - c copy out.mkv' videos.remove(video) # remove video from (...)
• 13:21
  How can i generate qcelp - mohammad noroz Newest 'ffmpeg' Questions - Stack Overflow
  For a project needs to generate rtp pcap with codec qcelp. ffmpeg only can decode it but for send with rtp ffmpeg need encode with qcelp I think software simulation in telecommunication use this codec Do you know how can I generate qcelp traffic with sip sdp?
• 12:39
  Shows improper/corrupted TS segments from Opencv webcam and FFmpeg - playmaker420 Newest 'ffmpeg' Questions - Stack Overflow
  Im experimenting with opencv and ffmpeg to create a live hls stream from the webcam using some scripts The ffmpeg version i use is 3.4 frame-detection.py import numpy as np import cv2 import sys cap = cv2.VideoCapture(0) while(True): # Capture frame-by-frame ret, frame = cap.read() framestring = frame.tostring() sys.stdout.write(str(framestring)) # Display the resulting frame cv2.imshow('frame', frame) if cv2.waitKey(1) & 0xFF == ord('q'): break # When everything (...) --
• 12:25
  ffmpeg : av_read_frame don't return data and i can't convert picture with sws_scale - Hugo Charasss Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to decode a h264 video stream with ffmpeg and I have a problem when using av_read_frame. No data is put in packet->data. spy on packet I want to convert pic in YUV to RGB with sws_scale but when i call it i have an error : bad src image pointers if someone can explain the problem thx for reading here my code : AVFormatContext* input_ctx = NULL; AVStream* video_st = NULL; AVCodecContext* decoder_ctx = NULL; AVCodec* decoder; AVPacket pkt = 0 ; AVFrame* pFrameRGB = NULL; AVFrame* sw_frame = NULL; DWORD dwWidth = (...) -- spy on packet
• 11:39
  ffmpeg need to run this command for 360 times - Dévèñdræ Rághùwáñhsí Newest 'ffmpeg' Questions - Stack Overflow
  FFmpeg need to run this command for 360 times but it fails after 200 or any optimization for this command. for (int i = 0; i
• 11:36
  Output filename extension in fswatch and ffmpeg - rr09 Newest 'ffmpeg' Questions - Stack Overflow
  I'm having issue with the file-naming extension output. My input is JPG files that needs to convert to MP4 using FFMPEG. However, when I run the code below it output as img1.jpg.mp4 including the input file extension instead of just img1.mp4. fswatch -e ".*" -i "\\\\.jpg$" . |xargs -n1 basename|xargs -n1 -t -I sh -c 'pwd; && ffmpeg -y -loop 1 -i "" -vf "fade=t=in:st=0:d=1,fade=t=out:st=2:d=1" -preset "ultrafast" -c:v libx264 -t 3 -pix_fmt yuv420p ".mp4"' Any help is much appreciated. Running on MAC, SH/BASH EDITED: BTW I also tried a loop (...)
• 09:34
  FFmpeg YouTube live streaming automatically stopped after some time (6- 9 min) RTMP node js - Avneesh Singh Newest 'ffmpeg' Questions - Stack Overflow
  I am developing a feature where I am capturing the desktop screen and live streaming on YouTube by using the FFmpeg module. The streaming is working fine but the problem is it stopped automatically after some time like 6-9 min and YouTube is showing "no data" receiving. Below I attached the code. const process = spawn(pathToFfmpeg,["-probesize", "10M", "-f", "gdigrab", "-i", "desktop", "-framerate", "30", "-f", "dshow", "-i", "audio= Microphone (2 - USB audio device)", "-filter_complex", "amix=inputs=1", "-preset", "fast", "-g", "60", "-tune", "zerolatency", "-c:v", "libx264", (...)
• 08:12
  live stream RTSP to html all browsers - jimmy Newest 'ffmpeg' Questions - Stack Overflow
  I have a situation and cant find an answer online maybe you could help me. I am trying to stream an rtsp stream to HTML basically, I converted the stream to his/m3u8 local dir using ffmpeg, my problem is displaying the hls to my web page and get it to work on the main browsers like chrome ,Firefox etc. the only way i got it to work is by using python command "python -m http.server" to my local dir(where the hls stream was saved) and it works on I.E browser. and all i did needs to be done on the back end (asp.net app). i did not write lot of (...) -- https://github.com/video-dev/hls.js/blob/master/demo/basic-usage.html, http://localhost:8000/stream/video.m3u8
• 08:04
  Sequelize FFMPEG get video after upload on NodeJs - jjplack Newest 'ffmpeg' Questions - Stack Overflow
  Hello After upload a video to db using sequelize, i would like to edit it using FFMPEG So to get the video is just point the model attribute to FFMPEG? Because using the file path is not editing the video. For exemple: fastify.route( method: "POST", url: "/posts", preHandler: upload.single("video"), handler: async function(request, reply) const Post = fastify.sequelize; const videoPath = "./public/uploads/"; const post = await Post.create( video: request.file.path, title: (...)
• 05:48
  How can I generate a multiple period DASH manifest with ffmpeg? - Robert Simmons Jr. Newest 'ffmpeg' Questions - Stack Overflow
  I am looking to encode a file and generate multiple periods rather than just one period. When I try to run ffmpeg with the below command, the result is a single period with multiple adaptation sets so clearly that is the wrong approach. I had thought by breaking the files by time this might work but apparently not. Any advice would be appreciated: ffmpeg -i ~/Downloads/turkish-horses.mp4 \\ -map 0:v:0 -b:v:1 1000k -ss 0 -t 5 -c:v:1 libx264 -filter:v:1 "scale=640:-1" \\ -map 0:v:0 -b:v:2 1000k -ss 5 -c:v:2 libx264 -filter:v:2 "scale=640:-1" \\ -map 0:v:0 -b:v:3 3000k -ss 0 (...)
• 05:31
  How can I record a window using ffmpeg by id? - henrique vital Newest 'ffmpeg' Questions - Stack Overflow
  I want to get the id of the window by name using c++ or qml and record the specific screen using this id in ffmpeg. ffmpeg -f x11grab -wid 0x6200012 -s 1920x1052 -r 30 -i :0.0+0,0 How can I do this? it's not necessary to be the id, can be the offset-x and offset-y, I just want to record the window in any position.
• 05:09
  Catching dropped FFMPEG frames in iOS? - jbeu425 Newest 'ffmpeg' Questions - Stack Overflow
  I'm developing an iOS app which streams RTSP over a WiFi connection. I need to be able to inform the user if the connection is not good, and I'd like to know if there is some way to catch dropped FFMPEG frames in some way? My frames are decoded using the method below, is there somewhere here I can tap into to catch an issue with the frame being decoded? There is currently an NSLog which says "decode video error!" about half way down this method, but running network link conditioner set to "very poor network" never reaches this line even though the stream is very (...)

29 June

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 23:54
  Non-monotonous DTS in output stream 0:1 even if I re-encode them before concat - Tigran Tokmajyan Newest 'ffmpeg' Questions - Stack Overflow
  I'm having an issue with FFMPEG after I try to concat 2 video/audio. Prior to concatenation, I do re-encode them identically. But it turns out I'm still having problems with timebases. Here is what I do. I loop an image in the background for the audio file and re-encode. Like this ffmpeg -y -loop 1 -r 30 -i profile-pic.png -i my-audio.mp4 -shortest -vsync 2 -video_track_timescale 600 -c:v libx264 -crf 23 -pix_fmt yuv420p -r 30 -c:a aac processed-audio.mp4 I add an intro for video file and re-encode, like (...)
• 21:42
  How can i use ffmpeg to add voice note to another mp3 at specific time , let everything play without reducing the original mp3 - Adike maduabuchi Newest 'ffmpeg' Questions - Stack Overflow
  I have used some code which does not give me what I want, I used PHP shell to execute the code $var = 'ffmpeg -y -i ' . $voice_note_tag . ' -i ' . $original_music_path . ' -filter_complex "[0]asplit[a][b]; [a]atrim=duration=' . $time_come_vioce . ',volume=\\'1-max(0*(t-1),0)\\':eval=frame[pre]; [b]atrim=start=' . $time_come_vioce . ',asetpts=PTS-STARTPTS[song]; [song][1]amix=inputs=2:duration=first:dropout_transition=2[post]; [pre][post]concat=n=2:v=0:a=1[mixed]" -map "[mixed]" ' . $output . ' 2>&1';  (...)
• 20:46
  Requested MovieWriter (ffmpeg) not available even when I installed it - EXODIA Newest 'ffmpeg' Questions - Stack Overflow
  I am running this command. import bar_chart_race as bcr bcr.bar_chart_race(df=covid_df,filename=None,figsize=(3.5,3),title='Covid-19 Cases by State',n_bars=10) Getting the below error Exception: You do not have ffmpeg installed on your machine. Download ffmpeg from here: https://www.ffmpeg.org/download.html. Matplotlib's original error message below: Requested MovieWriter (ffmpeg) not available Have already installed the module D:\\py\\Scripts>pip install ffmpeg-python Requirement already satisfied: (...)
• 19:25
  how to encode a video file to x265 10bit main10 profile in ffmpeg - Kirito Newest 'ffmpeg' Questions - Stack Overflow
  I'm currently trying to encode a video file with ffmpeg -i input.mkv libx265 crf=28 -x265-params profile=main10 out.mkv but i am getting the output file is in 8 bit?
• 19:18
  FFMPEG nb_frames vs nb_read_frames - Alex Willcox Newest 'ffmpeg' Questions - Stack Overflow
  I have videos captured at 200fps and I'm trying to label each frame with it's frame number. However, looking at the original videos with the following command: ffprobe.exe -i YR7-020320-B1-2.avi -print_format json -loglevel fatal -show_streams -count_frames -select_streams v and I get the following output: "streams": [ "index": 0, "codec_name": "dvvideo", "codec_long_name": "DV (Digital Video)", "codec_type": "video", "codec_time_base": "1001/30000", "codec_tag_string": "dvsd", "codec_tag": "0x64737664",  (...)
• 18:41
  How to reduce quality of multiple JPEG image files using ffmpeg? - Jorge Anzola Newest 'ffmpeg' Questions - Stack Overflow
  I want to reduce the quality of a bunch of images at the time. With -q:v x where x is a number between 1 and 30 (the bigger the number, the worse the quality). I'm able to save a lot of space even with x=1. Now, when it comes to process multiple files, I'm stuck. I've tried these two batch files: mkdir processed for f in *.jpg; do name=`echo $i | cut -d'.' -f1`; echo $name; ffmpeg -i $i -q:v 1 processed/$name.jpg; done And mkdir processed for f in *.jpg; do ffmpeg -i "$f" -q:v 1 (...)
• 18:38
  Updating app uses FFMpeg version used in older version of app - Android Developer Newest 'ffmpeg' Questions - Stack Overflow
  I was using FFMpeg old version in my app and now i updated my app to new FFMpeg version.But when i update my old app version to new app version it still seems to use old version of FFMpeg until i uninstall old app version and then install new app version.I tried programmatically delete cache data in my new version of app using below code but with that also I face problem in some devices which still uses old FFMpeg version- private void clearData() try PackageInfo pInfo = getPackageManager().getPackageInfo(getPackageName(), 0); int mCurrentVersion = (...)
• 14:19
  Struggling to add frame number to each frame of a video - Alex Willcox Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to add frame number to each frame of a video using the code below. It's working, as in it's labelling the frames but it's dropping frames when doing so. For some reason, it's coding at 30fps, rather than the 200fps that I would like. Does anyone know how to solve this? Thanks! ffmpeg -i YR7-020320-B1-2.avi -vf "drawtext=fontfile=/usr/share/fonts/truetype/DroidSans.ttf: timecode='00\\:00\\:00\\:00': r=200: \\ x=(w-tw)/2: y=h-(2*lh): fontcolor=white: box=1: boxcolor=0x00000000ⓐ1" -an -y (...)
• 14:06
  How can i mux H264 stream into MP4 file via libavformat - Brian Newest 'ffmpeg' Questions - Stack Overflow
  I want to realize an application that firstly decode a multi-media file(such as test.mp4 file, video codec id is H264), get a video stream and an audio stream, then make some different in the audio stream, at last encode the video stream(use libx264) and audio stream into a result file(result.mp4). To promote the efficiency, i omitted the decode and encode of video stream, i get the video packet via function "av_read_frame", then output it directly into the result file via function "av_write_frame". But there is no picture in the output file, and the size of output file is fairly (...)
• 07:52
  Recursive ffmpeg script preserving the subfolder structure [closed] - Sbr Newest 'ffmpeg' Questions - Stack Overflow
  I've +300 videos in old format (.VOB) and I want to convert it in mp4. Luckly, after some documentation, I've managed to convert a couple of them, but I need to make it automatic. Don't know how, even which language should I use (python, batch...) The thing is I want to preserve the subfolder structure. For example, if video 1 is inside folder B which is also inside folder A, the output must be in a folder named "output", and inside the converted video must be inside folder B and folder A The ffmpeg command, if necessary: ffmpeg -i input.vob -vf yadif=1 (...)
• 10:54
  How to get Highest possible bit rate and dimensions of a video? - chawila Newest 'ffmpeg' Questions - Stack Overflow
  I am using a package called pascalbaljetmedia/laravel-ffmpeg And want to create an HLS playlist for video streaming. but first i want to check the video bit-rate or width/height to see if it's a 4k, 1080, 720 etc. So how do i calculate the video bitrate and it's dimensions?.. Here is what i want to do after getting the video information: $video = FFMpeg::fromDisk('videos') ->open('original_video.mp4') ->exportForHLS(); $resolutions = []; //check if we can make 4k version if ( ( $bitrate >= 14000 ) (...)
• 10:48
  ffmpeg: RTP missed many packets - Yves Newest 'ffmpeg' Questions - Stack Overflow
  I have an mp4 file named test.mp4, and I'm using VLC player as an RTSP server to convert the file test.mp4 to the RTSP stream and send it to the client. Here is how I configure my VLC to become a RTSP server: https://www.youtube.com/watch?v=kfCKSIrIGlY Then I login remotely my Linux machine, which is the client to receive the RTSP stream. To do so, I execute the below command on my Linux machine: ffmpeg -i rtsp://192.168.120.157:5544/stream -c copy -f segment -segment_time 100 out_%d.mp4 After executing the command, I got two mp4 files. It seems that (...) -- https://www.youtube.com/watch?v=kfCKSIrIGlY
• 10:14
  ENOENT error when trying to access output with ffmpeg + node.js - John Grayson Newest 'ffmpeg' Questions - Stack Overflow
  I am running ffmpeg in a lambda function to do some video processing. My problem is the processed video is not being outputted/saved. Therefore, when I try to access the processed video, I get the error: ERROR Error retrieving video to upload [Error: ENOENT: no such file or directory Relevant parts of my code: const spawnSync = require("child_process"); exports.handler = async (event, context) => spawnSync( "/opt/ffmpeg/ffmpeg", [ "-i", `/tmp/myfile`, 'title="Test 123"', `/tmp/processed_file`, ], stdio: (...)
• 08:50
  Fluent-ffmpeg and Multer Cut video lenght on Upload - jjplack Newest 'ffmpeg' Questions - Stack Overflow
  After setup a simple upload file with Multer, I would like to cut the length and take a screenshot of the video after upload it. The upload works fine but the FFMPEG did cut the video length. First I follow the doc added the cut on setStartTime and setDuration. .setStartTime("00:00:00") .setDuration("00:01:00") The video still uploaded with full length and then I tried the addInputOption and outputOptions .addInputOption("-ss 00:00:00 -t 00:01:00") .outputOptions([ "-ss 00:00:00 -t 00:01:00", "-c:v libx264", "-r 30", "-pix_fmt (...)
• 07:40
  ffmpeg motion sensing to invoke link - anthos Newest 'ffmpeg' Questions - Stack Overflow
  ffmpeg -rtsp_transport tcp -i rtsp:///h264/m.amp -vf select='gte(scene\\,0.05)',metadata=print -an -f null - The command above produce output below when a mition is detected. [Parsed_metadata_1 ⓐ 000002896a401700] frame:0 pts:595321 pts_time:6.61468 [Parsed_metadata_1 ⓐ 000002896a401700] lavfi.scene_score=0.052305 [Parsed_metadata_1 ⓐ 000002896a401700] frame:1 pts:1022151 pts_time:11.3572 [Parsed_metadata_1 ⓐ 000002896a401700] lavfi.scene_score=0.131147 Is there anyway I can have a curl / wget triggered, at same time, to open a link (...)
• 07:06
  View MPEG-TS stream in browser - alexenv Newest 'ffmpeg' Questions - Stack Overflow
  I want to create a webpage with a video player that can play a H264 mpeg-ts live stream. I can't find any web player that can do that. I read that JWPlayer is capable of doing that, but only in the paid version. The stream can be played in VLC and any other players. What can I do? I tried using ffmpeg to convert the stream to something more useful, but no succes. ffmpeg -i "http://localhost:9002/tv.ts" -vcodec libx264 -r 20 -s 320x240 -threads 2 -vprofile baseline -vpre zoom -strict experimental -acodec aac -ab 96000 -ar 48000 -ac 1 -f rtsp (...)
• 06:17
  Streaming opencv to youtube with ffmpeg - Tim Treurniet Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to live stream to youtube from a c++ opencv project. Currently, my program outputs a RTMP stream which nginx should push to youtube. A problem I'm having is youtube's requirement for an audio stream. I'm trying a workaround by restreaming using ffmpeg. It adds an empty audio stream (not efficient). Another issue is the output speed of my program which is around 10 fps. When playing in vlc or youtube, the stream buffers for a while and plays a few seconds of smooth video. How should I set this up in c++ to play a constant stream with (...) -- https://github.com/andreanobile/opencv_ffmpeg_streaming
• 04:38
  I'm trying to dynamically call to a folder based on path of my program - Jessie Wilson Newest 'ffmpeg' Questions - Stack Overflow
  I have been working on this for a couple days and I feel like I'm going about it wrong. Say my .py program is is Desktop/TEST. The executable I want to run is in Desktop/TEST/ExampleProgram I want to be able to call example.exe and send CLI commands to it out of the above folder. I can do this easily if I hardcode the paths into the program. I need to know how to dynamically change this path depending on where the my program is unpacked. (I'll be using pyinstaller to turn the main .py into a .exe) I have tried doing this with ("%s" % (...)
• 03:39
  fluent-ffmpeg on lambda exits process without any errors - John Grayson Newest 'ffmpeg' Questions - Stack Overflow
  I am running ffmpeg on a lambda that runs, but exits the process before it is finished, but does not produce any sort of error and I am trying to figure out why. My lambda gets triggered when a file is uploaded to s3. The lambda retrieves the file from s3 and processes it using ffmpeg. I put in enough console.logs to determine that the lambda is able to retrieve and save the file just fine; but it exits the process without any errors in the ffmpeg process. Relevant parts of my code: const ffmpeg = require("fluent-ffmpeg"); const tempFolder = "/tmp"; // Set ffmpeg (...)
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  How to play two videos side by side using FFmpeg? - user1hjgjhgjhggjhg Newest 'ffmpeg' Questions - Stack Overflow
  Hello I want to create a duet video feature like tiktok. I am using FFmpeg. I have tried this code ffmpeg \\ -i movie_output.mp4 \\ -i movie_output.mp4 \\ -filter_complex \\ "nullsrc=size=360x480[base]; [0:v] setpts=PTS-STARTPTS, scale=360x480, crop=180:480:90:0[left]; [1:v] setpts=PTS-STARTPTS, scale=360x480, crop=180:480:90:0 [right]; [base][left] overlay=x=0:y=0[base1]; [base1][right] overlay=shortest=1:x=180:y=0" \\ -c:v libx264 \\ -y result.mp4 It gives me this error: No such filter: ' ' Error initializing (...)