13 July

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

• 22:03
  Playing a video with JavaCV and FFmpeg - Wamasa Newest 'ffmpeg' Questions - Stack Overflow
  So, I'm developing a custom video player for Android but I need to play more than the android supported video files (mp4, 3gp...), like wmv, avi, flv. At this time I do already convert any video type to .mp4 and I'm able to play them after recoding, but I have no idea how can I play those wmv, avi files without recoding them to mp4 video formats. Is there any way I can play any video on Android without recoding them? JavaCV + FFmpeg library already working, just don't know how to do that. By the way, heres the code that I'm using (...)
• 21:52
  Using FFMPEG with Xvfb, Can't get a smooth video output - Emax Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to stream to twitch from a linux server, I've installed Xvfb and FFMPEG, the live starts fine, but I can't get a smooth video output. Setps: Xvfb :1 -screen 0 1920x1080x24 & export DISPLAY=:1 ffmpeg -probesize 60M -video_size "1920x1080" -framerate 60 -f x11grab -i :1.0 -f flv -ac 2 -crf 23 \\ -vcodec libx264 -g 120 -b:v 3000k -minrate 3000k -maxrate 3000k -pix_fmt yuv420p\\ -s "1920x1080" -preset veryfast -tune zerolatency -acodec libmp3lame -threads 4 -strict normal \\ -bufsize 12000k (...)
• 21:33
  Is it possible to add stroke to text in ffmpeg? - Svetlana Gajic Newest 'ffmpeg' Questions - Stack Overflow
  I would like to add black stroke to text in ffmpeg. Is it possible? -c:v libx264 -vf "hue=h=0, drawtext=fontfile=../bin/RobotoCondensed-Bold.ttf:text='Hello.':fontcolor=white: fontsize=158: x=0+(w-text_w)/2: y=50+(h-text_h-line_h)/2" -c:a copy -shortest -pix_fmt yuv420p ../bin/ENG_01.mov
• 19:16
  Generate video from numpy arrays with openCV - daVinci Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to use the openCV VideoWriter class to generate a video from numpy arrays. I am using the following code: import numpy as np import cv2 size = 720*16//9, 720 duration = 2 fps = 25 out = cv2.VideoWriter('output.avi', cv2.VideoWriter_fourcc(*'X264'), fps, size) for _ in range(fps * duration): data = np.random.randint(0, 256, size, dtype='uint8') out.write(data) out.release() The codec seems to be installed as ffmpeg can do conversions to the x264 codec and libx264 is installed. The code runs (...)
• 18:52
  Memory limit error using ffmpeg on heroku - Scherer Newest 'ffmpeg' Questions - Stack Overflow
  I have a Flask app running on Heroku and what I am trying to do is use FFmpeg to re-encode a video to x265. For that, I have the following route ⓐapp.route('/x265', methods=['POST']) def rotax265(): up_file = request.files['file'].stream in_file = tempfile.TemporaryFile() in_file.write(up_file.read()) in_file.seek(0) out_file = tempfile.TemporaryFile() conv = VideoConverter(in_file, out_file) conv.x265() out_file.seek(0) return out_file.read() It uses a VideoConverter class (...) -- ffmpeg-python
• 18:04
  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']);  (...)
• 18:01
  Im failing to build .so file for android from FFMPEG - yejafot Newest 'ffmpeg' Questions - Stack Overflow
  I tried many times with different versions of ffmpeg but failed eventually. I dont know how they wrote .sh file to configure different tools. Here are some .sh files i tried and it all failed. Either it shows only android/share folder instead of android/include android/lib android/share OR i end up in error like no file or folder exist,etc I will share build_arm64-v8a different version of files below VERSION 1 #!/bin/bash export NDK=/media/sf_sharing/android-ndk export HOST_TAG=linux-x86_64 # adjust to your building (...)
• 17:54
  FFMPEG creating video which have blinking opacity overlay - Nikhil Solanki Newest 'ffmpeg' Questions - Stack Overflow
  I am creating video which has an overlay of black color which is continuously changing opacity from 0.0 to 1.0(which means blinking). So, I am setting color as input and set it with blend=all_mode='overlay':all_opacity=0.5 full command: ffmpeg -i combine2.mp4 -loop 1 -i image1.png -i song.mp3 -f lavfi -i "color=black:s=540x960" -t 20 -filter_complex "[0]split=2[color][alpha]; [color]crop=iw/2:ih:0:0[color]; [alpha]crop=iw/2:ih:iw/2:ih[alpha]; [color][alpha]alphamerge[v1]; [1]scale=540:960, setsar=1[v2]; [3]scale=540:960, format=yuv420p, loop=-1:size=2048, (...)
• 16:57
  janus Streaming plugin choppy video - Lucas Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to read the stream from RTSP to do some process(AI) then push the frame to Janus using FFMPEG. Currently, I am using libvpx (Vp8) format for this. but my Video is very choppy on playback. It is breaking a lot. I am adding by FFmpeg pipeline. not sure what is the issue. I am new to this. I found Janus really simple to use. but this is giving me a headache. it is like breaking/freezing so badly. My setup is Janus running in a container with a network as the host . I use WebSocket + HTTP to play stream through UI  (...)
• 16:33
  discord.py - Playing the same audio stream in several voice channels - Cyxo Newest 'ffmpeg' Questions - Stack Overflow
  I made a Discord bot using the discord.py library which aims at playing a web radio in several voice channels. Basically it's the same audio stream for every channel. What I'm doing right now is: voice_channel.play(discord.FFmpegPCMAudio(stream_url)) However every FFmpegPCMAudio uses about 10% of my CPU and there's one for each vc so eventually my bot crashed a lot when playing in 10 channels (which isn't a lot). Since it's the same stream, I tried the following: player = FFmpegPCMAudio(stream_url) for voice_channel in vcs:  (...)
• 18:18
  FFmpeg starting manually but not with Systemd on boot - eKrajnak Newest 'ffmpeg' Questions - Stack Overflow
  On Raspberry Pi 4 B 4GB with official Debian 10 image, I have /home/pi/run.sh script with following: #!/bin/bash ffmpeg -nostdin -framerate 15 -video_size 1280x720 -input_format yuyv422 -i /dev/video0 -f alsa -i hw:Device \\ -af acompressor=threshold=-14dB:ratio=9:attack=10:release=1000 -c:a aac -ac 2 -ar 48000 -ab 160k \\ -c:v libx264 -pix_fmt yuv420p -b:v 3M -bf 1 -g 20 -flags +ilme+ildct -preset ultrafast \\ -streamid 0:0x101 -streamid 1:0x100 -mpegts_pmt_start_pid 4096 -mpegts_start_pid 0x259 -metadata:s:a:0 language="" -mpegts_service_id 131 (...)
• 15:30
  FFMPEG php HLS and DASH conversion - Angus Simons Newest 'ffmpeg' Questions - Stack Overflow
  I'm using this repo https://github.com/aminyazdanpanah/PHP-FFmpeg-video-streaming to encode video in hls and then reproduce on the front end. After creating all the hls segments correctly the php script fail to execute the command below. The command getting error is the next one: '/usr/bin/ffmpeg' '-y' '-i' 'source.mp4' '-c:v' 'libx264' '-c:a' 'aac' '-bf' '1' '-keyint_min' '25' '-g' '250' '-sc_threshold' '40' (...) -- https://github.com/aminyazdanpanah/PHP-FFmpeg-video-streaming
• 12:32
  Fastest way to extract frames using ffmpeg? - Stpn Newest 'ffmpeg' Questions - Stack Overflow
  Hi I need to extract frames from videos using ffmpeg.. Is there a faster way to do it than this: ffmpeg -i file.mpg -r 1/1 $filename%03d.jpg ?
• 12:28
  ffmpeg 4.3 build failure on Mac OS 10.12.6 - yay nay Newest 'ffmpeg' Questions - Stack Overflow
  I have, by mistake, aborted the install of svtplay-dl via homebrew, while the gcc dependency was installing. I did the "brew cleanup", after which the ffmpeg simply dissappeared from the command line. I have reinstalled the gcc to the latest available version (via homebrew) only to find the same error several times: enter code here"==> Installing dependencies for homebrew-ffmpeg/ffmpeg/ffmpeg: icu4c and x264 ==> Installing homebrew-ffmpeg/ffmpeg/ffmpeg dependency: icu4c ==> ./configure --prefix=/usr/local/Cellar/icu4c/67.1 --disable-samples --disable-tests (...)
• 12:11
  Is it possible to concatenate few videos together, setting their timings and displaying background image, if no video for the current frame? - Valeryi Cherdakov Newest 'ffmpeg' Questions - Stack Overflow
  I have an audio track, say, a few minutes long, as well as several short videos of several tens of seconds. For each of these videos I have a timing - the video should start at a certain second. The audio tracks of these videos are not needed. The output video should last exactly as long as the audio lasts. If at the moment there is no video to display, a picture should be displayed (as if the picture is on layer #1, and the rest of the videos are on layer #2). Is it possible to complete this task using a command or a series of ffmpeg (...)
• 11:57
  Install ffmpeg package inside docker container - Yaran Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to install ffmpeg package inside dockerfile, but after that ffmpeg package was not installed. Here is my dockerfile: FROM ubuntu:18.04 FROM maven:3.6.0-jdk-11-slim AS build COPY src /home/app/src COPY pom.xml /home/app RUN mvn -f /home/app/pom.xml clean package -DskipTests RUN apt-get update -y && apt-get install -y ffmpeg FROM openjdk:11-jdk COPY --from=build /home/app/target/car-1.0.jar /home/car.jar EXPOSE 8080:8080 ENTRYPOINT ["java","-jar","/home/car.jar"] If I enter inside docker container and (...) -- https://hub.docker.com/r/mwader/static-ffmpeg/
• 09:37
  FFMPEG show audio frequency waves with border - Nikhil Solanki Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to generate sine waves or audio frequency like using this command: ffmpeg -i combine2.mp4 -i image1.png -i song.mp3 -t 20 -filter_complex "[0]split=2[color][alpha]; [color]crop=iw/2:ih:0:0[color]; [alpha]crop=iw/2:ih:iw/2:ih[alpha]; [color][alpha]alphamerge[v1]; [1]scale=540:960, setsar=1[v2]; [2]showfreqs=s=540x100:mode=line:ascale=sqrt:colors=white|red[v3]; [v2][v3] overlay=main_w-overlay_w:main_h-overlay_h-10[v4]; [v4][v1] overlay=1" output_video2.mp4 -y This command shows frequency of audio with white colour only and also its not smooth as (...) -- ,
• 09:05
  Blank out video frames for last two minutes of MP4 (while keeping audio intact) - fourells5 Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to make a copy of one of my mp4 movies with audio intact, but blacking out video frames only on the last few minutes. Basically I want to keep the end credit music but without the artifacted video. I found this answer: which works perfectly for an entire mp4 file (including a test fragment I made of the above ending credits sequence), but I need it applied as I stated above to just the end of the entire copied full mp4. In this case I don't want to start blanking the video stream frames until after 2h 7m 30s. I messed around with combinations of the -ss, (...)
• 08:52
  Create a subtitle mpd file with MP4box - 123abc Newest 'ffmpeg' Questions - Stack Overflow
  I'm creating a mpd file for a video player and for now I have everything to cover the video, audio and language settings but I'm struggling with the subtitles. Here's the command I used for audio and video : mp4box -dash 10000 -profile dashavc:264:onDemand -rap video/audio.mp4#audio/video
• 06:50
  FFMPEG creating puzzle pieces video from an image - Nikhil Solanki Newest 'ffmpeg' Questions - Stack Overflow
  I am creating puzzel solving video of a picture. My output must be in w540:h960 and divided puzzel pieces(image pieces) into 4*4=16 pieces puzzel. So, after referring this answer I also followed that: ffmpeg -i background.jpg -i image1.jpg -t 14 -filter_complex "[0]scale=540:960[bg]; [1]split=16[a][b][c][d][e][f][g][h][i][j][k][l][m][n][o][p]; [a]crop=iw/4:ih/4:0*iw/4:0*ih/4[a]; [b]crop=iw/4:ih/4:1*iw/4:0*ih/4[b]; [c]crop=iw/4:ih/4:2*iw/4:0*ih/4[c]; [d]crop=iw/4:ih/4:3*iw/4:0*ih/4[d]; [e]crop=iw/4:ih/4:0*iw/4:1*ih/4[e]; [f]crop=iw/4:ih/4:1*iw/4:1*ih/4[f]; [
• 06:10
  write procedurally generated audio to ffmpeg from python script - Mei Zhang Newest 'ffmpeg' Questions - Stack Overflow
  I have a python script that writes procedurally generated images to ffmpeg to create a video: import subprocess from PIL import Image width, height = 600, 300 cmd = [ "ffmpeg", "-s", f"widthxheight", "-pix_fmt", "rgba", "-f", "rawvideo", "-i", "-", "output.mp4", "-y" ] p = subprocess.Popen(cmd, stdin=subprocess.PIPE) for _ in range(500): img = Image.new("RGBA", (width, height), (200, 0, 0)) p.stdin.write(img.tobytes()) p.stdin.close() How can I extend this script to also write (...)
• 03:53
  How to use FFmpeg & "tee" to UDP video (only) stream to another computer while recording to computer with USB camera - pomptondrive Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to get "tee muxer" to work with FFmpeg, but I'm not having much luck. Basically I would like to stream a USB camera with UDP to another computer with an decent/acceptable result to monitor, while recording around 15 FPS in an economical (compressed) fashion that won't take up too much disk space. Honestly, I don't understand the entire syntax of using "tee"--I guess that's obvious. I have looked at some of the FFmpeg documentation, but it doesn't seem comprehensive enough in this instance. So, currently, I have experimented a little and this (...)
• 03:22
  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 (...)
• 00:18
  Add watermark-overlay with -filter_complex to multiple outputs (dash) - Werner Newest 'ffmpeg' Questions - Stack Overflow
  I'm creating a set of files for DASH (without audio) with: ffmpeg -i "input.mov" -y -keyint_min 100 -g 100 -sc_threshold 0 -c:v libx264 -pix_fmt yuv420p -map v:0 -s:0 320x180 -b:v:0 681.125k -maxrate:0 681.125k -bufsize:0 340.5625k -map v:0 -s:1 640x360 -b:v:1 2724.5k -maxrate:1 2724.5k -bufsize:1 1362.25k -map v:0 -s:2 1280x720 -b:v:2 5449k -maxrate:2 5449k -bufsize:2 2724.5k -map v:0 -s:3 1920x1080 -b:v:3 10898k -maxrate:3 10898k -bufsize:3 5449k -init_seg_name "myname_$RepresentationID$.$ext$" -media_seg_name (...)
• 00:09
  FFMPEG: writing the header to MKV container - Pol.H Newest 'ffmpeg' Questions - Stack Overflow
  In my project am capturing the desktop "gdigrab" and encode the stream to x264 and save it to a file. This works great when using containers such as MP4 and MPEG1. But when choosing MKV as container i get below output during the call to avformat_write_header **Stream #0:0, 0, 0/0: Video: h264, 1 reference frame, yuv420p, 1920x1080 (0x0), 0/1, q=2-31, 4 kb/s, 0.02 fps [matroska ⓐ 000002694acc5600] get_metadata_duration returned: 0 Invalid data found when processing input My question is: do i have to add a duration in order to use MKV, as stated in the error message (...)
• 00:04
  How to save an audiostream with ffmpeg - Nico Eymael Newest 'ffmpeg' Questions - Stack Overflow
  I want to save an audiostream from beatport.com with ffmpeg. The audiostream is: https://www.beatport.com/track/maximal-happiness/13855065 Outputfile: audiotrack1.aac I know that the music is streamed in aac format. I want my output file to be also aac. I've looked up in which format it is being streamed. So in cmd I write : ffmpeg -i https://www.beatport.com/track/maximal-happiness/13855065.aac -vn -c:a copy audiotrack1.aac My cmd answers me : https://www.beatport.com/track/maximal-happiness/13855065: Invalid data found when processing (...) -- https://www.beatport.com/track/maximal-happiness/13855065,

12 July

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

• 18:14
  D/Volley: [19782] BasicNetwork.logSlowRequests: HTTP response for request [closed] - nagaraj buganatti Newest 'ffmpeg' Questions - Stack Overflow
  Hi am facing some issues in php API please help with this am getting this error D/Volley: [19782] BasicNetwork.logSlowRequests: HTTP response for request=http://crowninnovativesolutions.in/MRain/API/index.php?p=uploadVideo 0x70148da5 NORMAL 1> [lifetime=173386], [size=279], [rc=200], [retryCount=0] D/respo: com.android.volley.ParseError: org.json.JSONException: Value http://crowninnovativesolutions.in/MRain/API/index.php?p=uploadVideo 0x70148da5 NORMAL 1 And My codes are function uploadVideo() require_once("config.php");  (...) -- http://crowninnovativesolutions.in/MRain/API/index.php?p=uploadVideo
• 23:51
  Is there a way to identify if an audio is VBR or CBR using FFMpeg? - Nishan Bende Newest 'ffmpeg' Questions - Stack Overflow
  I tried using FFProbe's command, but it's not enough to determine if the audio is CBR or VBR. ffprobe -v error -show_format -show_streams 123_1429602551009.051025.m4a Thanks
• 20:25
  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 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 controlbar looks weird, and seeking (...)
• 20:12
  Use ffmpeg to extract audio track and subtiles to a m3u8 files which can work with video.js - Maxou Newest 'ffmpeg' Questions - Stack Overflow
  I download video with multiple audio track and subtiles but I don't know the exact number and I want to convert this video to m3u8. Someone know a command which can do what i want ? Thanks
• 20:04
  Merge video with audio in flutter - Rishi Saraf Newest 'ffmpeg' Questions - Stack Overflow
  Hello folks need some suggestion for merging video with audio in flutter. I am able to achieve it using below FFmpeg command however output video quality is bad even though size is almost equal to the original video. Is there any other plugin which lighter and easier to use than FFmpeg. If not how can I make sure FFmpeg don't affect quality of video flutterFFmpeg .execute("-y -i $recordingFilePath -i $selectedSoundPath -map 0:v -map 1:a -shortest (...)
• 19:48
  Image sequence to video stream? - Hauns TM Newest 'ffmpeg' Questions - Stack Overflow
  Like many people already seem to have (there are several threads on this subject here) I am looking for ways to create video from a sequence of images. I want to implement my functionality in C#! Here is what I wan't to do: /*Pseudo code*/ void CreateVideo(List imageSequence, long durationOfEachImageMs, string outputVideoFileName, string outputFormat) // Info: imageSequence.Count will be > 30 000 images // Info: durationOfEachImageMs will be I know there's a project called Splicer (http://splicer.codeplex.com/) but I (...) -- http://splicer.codeplex.com/, these
• 18:53
  FFmpeg with MacOS-recorded WEBM: itsoffset argument for audio synchronization - Igniter Newest 'ffmpeg' Questions - Stack Overflow
  Getting quite a weird error while trying to synchronize audio using a simple command: ffmpeg -i in.webm -itsoffset 1.5 -i in.webm -map 0:v -map 1:a -c copy out.webm I know that the video was recorded by webcam (MediaRecorder API) in Chrome on MacOS Catalina. ffmpeg version 3.4.4-0ubuntu0.18.04.1 Copyright (c) 2000-2018 the FFmpeg developers built with gcc 7 (Ubuntu 7.3.0-16ubuntu3) configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/ x86_64-linux-gnu --enable-gpl (...)
• 18:37
  FFmpeg installation on Raspberry Pi Zero W: Undefined references to __atomic - MisterGray Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to install ffmpeg on my Raspberry Pi Zero W, but I get several error messages. OS: Raspberry Pi OS (32-bit) Lite (May 2020) I have executed the following commands: sudo apt update sudo apt full-upgrade sudo apt install git git clone https://github.com/FFmpeg/FFmpeg.git cd FFmpeg ./configure --arch=armel --target-os=linux --enable-gpl --enable-omx --enable-omx-rpi --enable-nonfree make -j2 sudo make install Output of last command: ... LD ffmpeg_g /usr/bin/ld: (...)
• 18:12
  How do I properly save an animation involving circles with matplotlib.animation and ffmpeg? - bghost Newest 'ffmpeg' Questions - Stack Overflow
  I recently tried out matplotlib.animation, and it's a wonderful tool. I can now make and save basic animations (ie that only involve straight lines) without any issues. However, when I made an animation involving circles, even though the interactive display was perfect, the saved mp4 file wasn't really satisfying. In the mp4 file, the edges of the circles were blurred, and if the circles were made semi-transparent (ie with an alpha value What can be done to solve these 2 issues (blurred edges + negated transparency) in the generated mp4 file ? Here is a simple (...)
• 14:22
  How to use separate DLL's when making separate MSI's? - hamidi Newest 'ffmpeg' Questions - Stack Overflow
  First, it's weird why can't I use 32-bit ffmpeg DLL's in 64-bit programs?! I use FFmpegInvoke in a C# program as a wrapper to call fffmpeg functions for getting a camera's packets and decoding them to frames. If the ffmpeg DLL's be 32-bit ones, the frames are not shown and the calls are unsuccessful. For the program, I use Visual Studio 2010 to build separate MSI's for 32-bit and 64-bit platforms by using a VDPROJ project. My question is how can I specify separate ffmpeg DLL's for separate MSI's? I need to build 32-bit MSI with 32-bit ffmpeg (...) -- FFmpegInvoke
• 11:01
  FFMPEG HLS stream for Android and IOS - Poda Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to stream to mobile devices with ffmpeg and apache2.2 but I haven't been successful. I used this command to create the segments and the playlist: ffmpeg -i http://x.x.x.x:8080 -codec:v libx264 -r 25 -pix_fmt yuv420p -profile:v baseline -level 3 -b:v 500k -s 640x480 -codec:a aac -strict experimental -ac 2 -b:a 128k -movflags faststart -flags -global_header -map 0 -f hls -hls_time 10 -hls_list_size 5 -hls_allow_cache 0 -sc_threshold 0 -hls_flags delete_segments -hls_segment_filename out%05d.ts list.m3u8 The source is a http stream which (...)
• 12:06
  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 (...)
• 11:44
  Python get ffmpeg process - Kevin 29890 Newest 'ffmpeg' Questions - Stack Overflow
  I am working on my own video editing software. But when the users clicks render I want to show a progress bar so the user knows how long they have to wait. How do I get the progress of ffmpeg because I use that for rendering their videos. The complete software is written in Python tkinter.
• 09:45
  Flutter_ffmpeg: how to get video and audio from url or storage - Chinmaya Garnaik Newest 'ffmpeg' Questions - Stack Overflow
  Actually i am very confused how i can give video and audio file to Flutter ffmpeg by url or by storage.so it can can give me the output by margarine it.i don't no how ffmpeg work in flutter .i used path provider to give the video and audio file to ffmpeg but i did't get any documentation showing how to provide video or audio file to ffmpeg. so please any can tell me how i can provide file to ffmpeg,it will be big help to me Thank You. i tryed to add some code from Flutter ffmpeg documentation what ever i do i always get some unknown errors. final FlutterFFmpeg (...)
• 08:43
  How to convert bitmaps array to a video in Android? - Kamran Janjua Newest 'ffmpeg' Questions - Stack Overflow
  I have a buffer which is filled with image bitmaps as they arrive (using a thread to continuously take pictures). I would then like to dump that bitmap buffer (I have a hashmap at the moment for matching the keys) into a .mp4 file. Here is the code to continuously capture the images using a handler. button.setOnClickListener prepareUIForCapture() if(isRunning) handler.removeCallbacksAndMessages(null) Logd("Length of wide: " + MainActivity.wideBitmaps.size) Logd("Length of normal: " + MainActivity.normalBitmaps.size) // This is where the (...)
• 09:58
  How to install ffmpeg on Heroku - Riju Newest 'ffmpeg' Questions - Stack Overflow
  I have a Python application on Heroku. How can I install ffmpeg on the app? I tried installing it using the buildpack but I got this error: discord.ext.commands.errors.CommandInvokeError: Command raised an exception: ClientException: ffmpeg was not found.
• 07:54
  Getting List of default argument values if not used in FFMPEG command execution - Pradeep Prabhu Newest 'ffmpeg' Questions - Stack Overflow
  When I use FFMPEG to capture a live IPTV stream on my MAC, I generally end up with an interrupted video. When I send these four arguments, the capture is successful. reconnect 1 -reconnect_at_eof 1 -reconnect_streamed 1 -reconnect_delay_max 2 I don't want to specify these arguments everytime, So I decided to update the default values in the source code. Unsure if I have done it right - I updated http.c which contains these arguments. I re-compiled FFMPEG successfully. I want to know if my changes are applied. Is there a way I can list out all the default values of the (...)
• 05:59
  How to change the "Data rate" of a video using ffmpeg? - John Newest 'ffmpeg' Questions - Stack Overflow
  How to change the Data rate of a video? Those are what I have tryed: ffmpeg.exe -i Video1.mp4 -b:v 284000 Video2.mp4 ffmpeg.exe -i Video1.mp4 -b:a 284000 Video2.mp4 ffmpeg.exe -i Video1.mp4 -bits_per_raw_sample 284000 Video2.mp4
• 02:38
  Set specific frame as thumbnail for video? - noClue Newest 'ffmpeg' Questions - Stack Overflow
  I just want some confirmation, because I have the sneaking suspicion that I wont be able to do what I want to do, given that I already ran into some errors about ffmpeg not being able to overwrite the input file. I still have some hope that what I want to do is some kind of exception, but I doubt it. I already used ffmpeg to extract a specific frame into its own image file, I've set the thumbnail of a video with an existing image file, but I can't seem to figure out how to set a specific frame from the video as the thumbnail. I want to do this without having to extract the (...)
• 01:01
  ffmpeg not working for some reason correctly on linux with discord bot [closed] - billybob joe Newest 'ffmpeg' Questions - Stack Overflow
  Does anyone have any experience getting a discord music bot working with ffmpeg on linux, I switched over from my windows vps to linux ubuntu 18.04 and installed ffmpeg which was a one line command "sudo apt-get install ffmpeg". Everything worked fine when I run the discord music bot on my windows vps and local pc. However when I do so on my linux vps the bot works fine, except the music commands. The bot will join the channel and just stay green and will not output any errors at all. It also does not crash, and will continue to (...)

11 July

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

• 23:49
  FFmpeg error: Unable to find a suitable output format for '' - Benjamin Basmaci Newest 'ffmpeg' Questions - Stack Overflow
  I'm new to ffmpeg as well as Android programming. I'm trying to load a video from a URL and crop it with ffmpeg. I want to save that video to a file. This is the command I found online: "-i " + videoUrl + "-filter:v crop=240:120:100:100 -c:a copy test.mp4" I have tried it and got the error Unable to find a suitable output format for '' So I tried to narrow the possible cause down and tried these commands as well: "-i " + videoUrl + " -c:v copy -c:a copy test.mp4" "-i " + videoUrl + " -c:v copy test.mp4" "-i " (...)
• 22:33
  Playback FFmpeg stream through UDP - Andrew Raleigh Newest 'ffmpeg' Questions - Stack Overflow
  I'm using the following command to send ffmpeg data: ./ffmpeg -i "" -pix_fmt yuv420p -tune zerolatency -preset ultrafast -f mpegts udp://127.0.0.1:23000 I then transmit and receive it to another computer through the srt protocol, and read it back on the end-point. I play back with .\\ffplay.exe -i udp://127.0.0.1:23000 -loglevel 40 and don't see a video. I can see data coming in from WireShark though. This is the log output: ffplay version N-98438-gc6cdfdf9c3 Copyright (c) 2003-2020 the FFmpeg developers built with gcc 10.1.0 (Rev3, Built by MSYS2 (...)
• 21:40
  How to add a new filter to ffmpeg library - Croolman Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to add functionality to FFmpeg library. The issue is that in developer guide there are just general instruction on how to do it. I know that when I want to add something to ffmpeg I need to register the new functionality and rebuild the library so I can then call it somehow like so: ffmpeg -i input.avi -vf "myfilter" out.avi I do not want to officialy contribute. I would like to try to create the extra functionality and test it. The question is - is there any scelet file where the basic structure would be ready and you would just get a pointer to a new (...)
• 20:25
  Convert Webrtc track stream to URL (RTSP/UDP/RTP/Http) in Video tag - Zeeshan Younis Newest 'ffmpeg' Questions - Stack Overflow
  I am new in WebRTC and i have done client/server connection, from client i choose WebCam and post stream to server using Track and on Server side i am getting that track and assign track stream to video source. Everything till now fine but problem is now i include AI(Artificial Intelligence) and now i want to convert my track stream to URL maybe UDP/RTSP/RTP etc. So AI will use that URL for object detection. I don't know how we can convert track stream to URL. Although there is a couple of packages like https://ffmpeg.org/ and RTP to Webrtc etc, i am using Nodejs, Socket.io and (...) -- https://ffmpeg.org/, https://github.com/Basscord/webrtc-video-broadcast
• 19:34
  How to add 'now playing' song title info to an rtmp audio stream in ffmpeg - no_event_logged Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to add 'now playing' metadata to a rtmp audio stream using ffmpeg. My current ffmpeg encoder string looks like this and is working fine, just missing the now playing info: "C:\\Program Files (x86)\\ffmpeg\\bin\\ffmpeg.exe" -re -f dshow -i audio="Line 2 (Virtual Audio Cable)" -acodec libfdk_aac -profile:a aac_he_v2 -cutoff 18000 -ab 48k -ac 2 -ar 44100 -f flv "rtmp://blah.com:1935/live/mystream The playout software (StationPlaylist) exports the current song title to C:\\NowPlaying\\nowplaying.txt but I have no idea how to get ffmpeg to inject this / keep it (...)
• 19:10
  Use fluent-ffmpeg to tell if a file is a video or audio - afterglowlee Newest 'ffmpeg' Questions - Stack Overflow
  I am using node-fluent-ffmpeg module in NodeJS. It is very good that fluent-ffmpeg provides functions to get the metadata of a video and audio file. https://github.com/schaermu/node-fluent-ffmpeg#reading-video-metadata I have tried on Mac OS to use the "resolution" attribute in the metadata to tell if a file is audio only or video, i.e. if both resolution.w and resolution.h are 0, then this file is an audio. This work fine on Mac OS. But some strange things happened that this doesn't work on Windows platform (I have tried Windows 7 64bit and Windows 2008) using (...) -- https://github.com/schaermu/node-fluent-ffmpeg#reading-video-metadata
• 18:15
  FFmpeg causing AttributeError: __enter__ on Win10 - Marci Newest 'ffmpeg' Questions - Stack Overflow
  I have a python code which runs perfectly on win7, but i struggle for hours now making it work on my win10 laptop. Before manually installing FFmpeg i receive the error "assert _HAS_FFMPEG, "Cannot find installation of real FFmpeg (which comes with ffprobe)." AssertionError: Cannot find installation of real FFmpeg (which comes with ffprobe)" so i downloaded, unzipped FFmpeg and set up the PATH. From now on i always receive the following error: with FFmpegReader(str(sourcepath)) as src: AttributeError: __enter__ I red that this error has something (...)
• 15:30
  How to add a thumbnail to a .webm video with FFmpeg - Claudio Ciccarone Newest 'ffmpeg' Questions - Stack Overflow
  I have a .webm video and i want to add a thumbnail to this video. With mp4 it's pretty easy to do but with webm FFmpeg gives to me this error: [webm ⓐ 0000024391cf6b80] Only VP8 or VP9 or AV1 video and Vorbis or Opus audio and WebVTT subtitles are supported for WebM. Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument This is the comand line: ffmpeg_x64 -i "../video.webm" -i ../thumb.jpg -loglevel warning -map 1 -map 0 -vcodec copy -acodec copy ../out.webm With mp4 it's alright. I know that the problem is (...)
• 14:00
  GPUMp4Composer is Muting my video, when app is running on my phnone(android 10). But it is working fine in Emulator(android 9) - Monis Khan Newest 'ffmpeg' Questions - Stack Overflow
  I am using GPUMp4Composer for adding two things: -Filter -Watermark Both the things are working correctly in the emulator (android 9). But the resulted video from GPUMp4Composer does not have any sound (muted) when I am using the app on my phone (android 10). This is my code: Bitmap watermark = BitmapFactory.decodeResource(getResources(), R.drawable.watermark); new GPUMp4Composer(srcMp4Path, destMp4Path) .size(540, 960) .videoBitrate((int) (0.25 * 16 * 540 * 960)) .filter(new (...)
• 13:42
  Can't obtain information with ffmpeg from Smooth Streaming Manifest file - albertoiNET Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to get details for a stream of protocol Microsoft Smooth Streaming, with ffmpeg tools (ffprobe and ffplay) but when I run the next command: ffprobe -i http://b31282.cdn.telefonica.com/31282/Manifest I obtain this: http://b31282.cdn.telefonica.com/31282/Manifest: Invalid data found when processing input I assume that this Manifest file is correct and complies with standards of Smooth Streaming . This is a brief extract of Manifest file: oioAAAIAAQCUAjwAV... Is a Fedora (...)
• 12:04
  `ffmpeg record audio output device - Roy Newest 'ffmpeg' Questions - Stack Overflow
  i am trying to capture my pulse output device: alsa_output.pci-0000_00_1b.0.analog-stereo.monitor with this command: /usr/bin/ffmpeg -f pulse -i alsa_output.pci-0000_00_1b.0.analog-stereo.monitor -c:a aac -b:a 128k /roee_files/test.wav i get this output with those warnings, and there is an audio delay: ffmpeg version 3.4.7 Copyright (c) 2000-2019 the FFmpeg developers built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-39) configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --docdir=/usr/share/doc/ffmpeg (...)
• 11:27
  Combining 2 FFMPEG Commands - John Doe Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to combine 2 ffmpeg commands, one which creates the video, and another which adds a simple fade to the beginning of the created video. Here's what I have: ffmpeg -y -stream_loop -1 -i "video.mp4" -stream_loop -1 -i "music.mp3" -i "audio.mp3" -filter_complex "[1:a]volume=0.1[a1];[2:a]adelay=5000|5000,apad=pad_dur=10[a2];[a1][a2]amerge=inputs=2,afade=in:st=0:d=5[audio]" -map "0:v" -map "[audio]" -c:v libx264 -c:a aac -ac 2 -ar 22050 -preset veryfast -shortest "output.mp4" ffmpeg -y -i "output.mp4" -filter_complex "[0:v]fade=in:0:d=5" -c:a copy -preset (...)
• 10:00
  ffmpeg scale down video dynamically (squeeze-back) or zoompan out to smaller than original - Sam Newest 'ffmpeg' Questions - Stack Overflow
  I have 2 videos, I'm trying to overlay one on top of the other, and have it shrink down in an animated fashion until it appears like a picture-in-picture setup. Then, after a few seconds it should scale back up. This is what I am trying to achieve (these would be videos, not images): This is the closest I've been able to get, but, crucially, zoompanning "out" (as opposed to "in") does not appear to work; so, of course, this does not work: ffmpeg -i bg.mov -i top.mov -filter_complex "[0:v]zoompan=z='pzoom-0.1':d=1, setpts=PTS-STARTPTS[top]; (...) --
• 07:36
  libavfilter - inputs and outputs confusion in avfilter_graph_parse_ptr - Rahul Newest 'ffmpeg' Questions - Stack Overflow
  I am learning libavfilter library. I have used transcoding.c and filtering_video.c examples from the ffmpeg source code. They are working fine and I understood everything except one part. I have some confusion between inputs and outputs parameters of the avfilter_graph_parse_ptr If you look at here, I was expecting buffersink to go in the outputs parameter and buffersrc to the inputs. But it does it in reverse - as if inputs are outputs of the filter graph. https://github.com/FFmpeg/FFmpeg/blob/master/doc/examples/transcoding.c#L340 Same done here in another (...) -- https://github.com/FFmpeg/FFmpeg/blob/master/doc/examples/transcoding.c#L340, https://github.com/FFmpeg/FFmpeg/blob/master/doc/examples/filtering_video.c#L149
• 02:17
  ffmpeg - converting webm videos generated by Chrome is slow - Nuthinking Newest 'ffmpeg' Questions - Stack Overflow
  I generate webm files in two different ways. One using Chrome WebRTC MediaRecorder, the other one is using a js library which generates the webm video frame by frame (webm-writer-js). The file size of the videos generated is not that different, the fast one is 60% of the slow one but the difference in speed is 1000% Using the basic ffmpeg syntax -i input.webm output.mp4 the files created with Chrome's media recorder take in fact almost 10x time to be converted. The conversion logs differ slightly but overall look very similar to my novice eyes. On the left the fast (...) -- webm-writer-js,
• 00:25
  Convert video.ts file into video.mp4 using ffmpeg - HorizonBloom Newest 'ffmpeg' Questions - Stack Overflow
  So I tried to convert a file named video.ts into video.mp4 in Python and am getting the error: FileNotFoundError: [WinError 2] The system cannot find the file specified Assuming video.ts is already loaded into the program and subprocess already imported. This is due to the line: >>> subprocess.run(['ffmpeg', '-i', 'video.ts', 'video.mp4']) but I don't know what's the problem. I've opened the video.ts file and it seem to be working fine. Python version (...)

10 July

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

• 16:45
  Accessing SRT transport statistics using ffmpeg - martyn Gilbert Newest 'ffmpeg' Questions - Stack Overflow
  I am using ffmpeg built with SRT and am successfully able to send video stream to the destination using SRT. I am wondering if it is possible to get access to the statistics from the SRT connection such as packets sent, packets lost, packets re-transmitted etc. The SRT demo application srt-live-transmit outputs these statistics to the console while running e.g. ======= SRT STATS: sid=226392826 PACKETS SENT: 0 RECEIVED: 514 LOST PKT SENT: 0 RECEIVED: 0 REXMIT SENT: 0 RECEIVED: 0 DROP PKT SENT: 0 RECEIVED: 0 RATE SENDING: 0 RECEIVING: 4.5198 BELATED (...)
• 16:32
  Using ffmpeg to assemble images from S3 into a video - Mass Dot Net Newest 'ffmpeg' Questions - Stack Overflow
  I can easily assemble images from local disk into a video using ffmpeg and passing a %06d filespec. Here's what a typical (pseudocode) command would look like: ffmpeg.exe -hide_banner -y -r 60 -t 12 -i /JpgsToCombine/%06d.JPG However, I'm struggling to do the same with images stored in AWS S3, without using some third party software to mount a virtual drive (e.g. TNTDrive). The S3 folder containing our images is too large to download to the 20GB ephemeral storage provided for AWS containers, and we're trying to avoid EFS because we'd have to provision (...) -- AWS S3, TNTDrive, EFS, FFMPEG concat filter
• 16:17
  no difference between h264 and h264_cuvid - Ruslan Ablyazov Newest 'ffmpeg' Questions - Stack Overflow
  I use libav to decode an RTSP stream. I tried two code options: with auto codec selection and with hardcoded codec. pCodec = avcodec_find_decoder (pFormatCtx->streams[p_InputVideoStreamIndex]->codecpar->codec_id); //pCodec = avcodec_find_decoder_by_name ("h264_cuvid"); LOG (info) name long_name? PCodec->long_name: ""); The avcodec_find_decoder() function returns h264 codec. The problem is that the speed and load on the CPU when using h264 is no different from h264_cuvid. What could be the reason? When I use h264_cuvid, the video card is loaded by 2-3% more.  (...)
• 15:35
  Google Colan installs ffmpeg very slowly - apegdro Newest 'ffmpeg' Questions - Stack Overflow
  I'm using the command '!apt install ffmpeg' and each time I run it in Google Colab it takes anywhere from 10 to 30-40 minutes to finish loading/installing. Anyone got a clue on why is that? And possibly how to fix it? Everything else I run loads in a matter of seconds or a few minutes.
• 14:09
  Edited video produces smaller image that original, even with higher resolution - ceperman Newest 'ffmpeg' Questions - Stack Overflow
  I've a .ts format recording from my Humax, which completely fills the window horizontally when played with VLC. In full-screen it fills the screen horizontally in letterbox style, and the same on the TV when played through my PS/3. All good so far. This is the ffprobe output: Duration: 02:16:37.72, start: 74238.902878, bitrate: 2554 kb/s Stream #0:0[0x931]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv), 704x576 [SAR 16:11 DAR 16:9], max. 15000 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc I used ffmpeg to change the audio track: ffmpeg -i movie.ts (...)
• 12:57
  FFMPEG zoompan for continuous zoom in/zoom out from start duration - Nikhil Solanki Newest 'ffmpeg' Questions - Stack Overflow
  I am creating continues zoomin/zoomout effect for input image using this command: ffmpeg -i combine.mp4 -i image1.jpg -filter_complex "[0]split=2[color][alpha]; [color]crop=iw/2:ih:0:0[color]; [alpha]crop=iw/2:ih:iw/2:ih[alpha]; [colo][alpha]alphamerge[v1]; [1]scale=540*2:960*2, setsar=1, zoompan=z='if(lte(zoom,1.0),1.02,max(1.001,zoom-0.0015))':d=25*0.25:x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)':s=540x960[v2]; (...)
• 10:59
  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 -> (...)
• 10:53
  Create dash manifest-file for mp4-videos - Werner Newest 'ffmpeg' Questions - Stack Overflow
  I took a video and created 3 versions of it in different sizes (including a watermark, no audio here) with: ffmpeg -i "input.mov" -i "watermark.png" -an -c:v libx264 -x264opts "keyint=24:min-keyint=24:no-scenecut" -b:v 2400k -maxrate 2400k -bufsize 1200k -filter_complex "overlay=24:960,scale=640:480" -y "output_640_480.mp4" ffmpeg -i "input.mov" -i "watermark.png" -an -c:v libx264 -x264opts "keyint=24:min-keyint=24:no-scenecut" -b:v 3200k -maxrate 3200k -bufsize 1600k -filter_complex "overlay=24:960,scale=800:600" -y "output_800_600.mp4" ffmpeg -i "input.mov" -i (...)
• 10:13
  Truncated prog_index.m3u8 in fluent-ffmpeg - Hassnain Alvi Newest 'ffmpeg' Questions - Stack Overflow
  I am creating a master playlist using fluent FFmpeg but the result prog_index.m3u8 contains last few entries it doesn't include full playlist data Here is the code for generating playlist const bitrate64 = ffmpeg("file.mp3").audioBitrate('64k'); bitrate64.outputOptions([ '-preset slow', '-g 48', "-map", "0:0", '-hls_time 6', '-master_pl_name master.m3u8', '-hls_segment_filename 64k/fileSequence%d.ts' ]) .output('./64k/prog_index.m3u8')  (...)
• 08:52
  FFmpeg "piping" doesn't work with mp4 files? - stlaza Newest 'ffmpeg' Questions - Stack Overflow
  I try the answer from this post and works very well for .webm format. I also try this implementation for mp4 file frames extraction and I got no bytes in stdout. Is there any solution to solve this issue?
• 07:48
  ffmpeg filter_complex concat never completes - seawolf Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to concatenate mp4 files into a single file. I am attempting to use the concat filter directly for reasons independent from this question (so -i list.txt is not a valid solution). All video files in question are between 4 and 20 minutes in length. What I am executing: % ffmpeg -i f01.mp4 -i f02.mp4 -filter_complex "[0:v][0:a][1:v][1:a]concat=n=2:v=1:a=1[v][a]" -map "[v]" -map "[a]" output.mp4 This is my understanding of the form of this command from references such as FFmpeg Filters Documentation: concat and Concatenate Videos Together Using FFMPEG!.  (...) -- FFmpeg Filters Documentation: concat, Concatenate Videos Together Using FFMPEG!
• 03:50
  How to convert RGB to YUV with ffmpeg - Amitrakshar Biszz Newest 'ffmpeg' Questions - Stack Overflow
  I Rendered Some Frames From Blender 3D in png 8-bit Format. There was an ALPHA Channel too! I was Looking for a Way to Convert those RGB Images to YUV.... So I Googled and after tens of hours I found a in which Colors stay the same! Wait, this is not the end of the story.... The Problem is I used a FFmpeg Script (which worked FINE, remember there was a Alpha channel at Input Images), That one below... But I Don't Understand Parts of it.... Well I can Guess what those can mean... ffmpeg -i "%04d.png" -vcodec libx265 -preset slow -crf 18 -pix_fmt yuv420p10le -vf (...) -- Colorspace - FFmpeg Trac/Wiki
• 02:44
  Can javascript MSE play segmented mp4 from the middle? - Elias Wagnerberger Newest 'ffmpeg' Questions - Stack Overflow
  in my current project i have a video stream that ffmpeg encodes to a segmented mp4. that encoded data is piped into an application that sends that data to whomever connects to that application through a websocket. when a client connects i make sure to send the ftyp and the moov boxes first and then send the most recent segments recieved from ffmpeg. on the client side i just pass all binary data from the websocket to MSE. The problem i am facing is that this works if the client is connected from the very start and gets all the fragments that ffmpeg pipes out, but it does not (...)

9 July

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

• 23:52
  FFMPEG: Controlling overlay through ZeroMQ in ffmpeg - Michel Newest 'ffmpeg' Questions - Stack Overflow
  For a project we need to manually control an overlay (static image) on top of a video stream. We concluded that we will need ZeroMQ to control this, and we've managed to control an audio filter successfully through ZeroMQ. To achieve this we've considered two options: Use a color filter to control the foreground (image) transparency "Move" the overlay image in front of the video stream, and remove it out of the video canvas We've managed to get both working, but not in combination with ZeroMQ, unfortunately. Example: ffmpeg -loglevel (...)
• 23:35
  FFMPEG: Controlling overlay through zmq in ffmpeg - Michel Newest 'ffmpeg' Questions - Stack Overflow
  For a project we need to manually control an overlay (static image) on top of a video stream. We concluded that we will need zqm to control this, and we've managed to control an audio filter successfully through zqm. To achieve this we've considered two options: Use a color filter to control the foreground (image) transparency "Move" the overlay image in front of the video stream, and remove it out of the video canvas We've managed to get both working, but not in combination with zqm, unfortunately. Example: ffmpeg -loglevel verbose (...)
• 23:21
  Transcode HLS segments individually with FFMPEG - Mathix420 Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to transcode a video in HLS, by first splitting the video in segments without encoding changes and then transcode all segments individually. I'm trying to achieve this so I can transcode a video in multiple EC2 instances in parallel to be more time efficient. I am using this scipt right now # Split input file in multiple segments ffmpeg -hide_banner -y -i $input -c copy -map 0 -an -segment_time 4 -reset_timestamps 1 -f segment output%03d.webm # Transcode each segments in multiple resolutions find . -name 'output*.webm' (...)
• 23:16
  ffmpeg resulting in no audio and unplayble video - Chris James Champeau Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to get ffmpeg to work as expected however I am having all kinds of trouble getting it to work. I need to output a webm and h264 for web play. However, the command I am using, while it used to work a few years ago, does not work at all now. Both my webm and h264 do not have audio, and neither will play in any browser. My command for webm is: ffmpeg -y -i "$KMVAR_File" -c:v libvpx -crf 24 -b:v 1000k -vf scale=720:-2 -c:a libvorbis "$KMVAR_webmPath" and my command for mp4 is: ffmpeg -y -i "$KMVAR_File" -c:v libx264 -pix_fmt yuv420p -profile:v (...)
• 22:28
  How is frame data stored in libav? - Wesley S Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to learn to use libav. I have followed the very first tutorial on dranger.com, but I got a little confused at one point. // Write pixel data for(y=0; ydata[0]+y*pFrame->linesize[0], 1, width*3, pFile); This code clearly works, but I don't quite understand why, particulalry I don't understand how the frame data in pFrame->data stored, whether or not it depends on the format/codec in use, why pFrame->data and pFrame->linesize is always referenced at index 0, and why we are adding y to pFrame->data[0]. In the tutorial it says  (...)
• 20:47
  How to extract frames from the In-memory mp4 file (bytes buffer) in Python? - stlaza Newest 'ffmpeg' Questions - Stack Overflow
  Now, my solution extracts images with saving bytes on disk using OpenCV/FFmpeg: from fastapi import APIRouter, UploadFile, File ⓐrouter.post("/") def extract_stream_frames(stream: UploadFile = File(...)): temp_filename = os.path.join(tempfile.gettempdir(), str(uuid.uuid4()) + ".mp4") # print(stream.content_type) local_temp_file = open(temp_filename, "wb") local_temp_file.write(stream.file.read()) local_temp_file.close() try: images = video.sampling(local_temp_file.name, num_frames=Config.IMAGES_PER_STREAM) images = (...)
• 20:17
  ffmpeg create blank screen with text video - kalafun Newest 'ffmpeg' Questions - Stack Overflow
  I would like to create a video consisting of some text. The video will only be 0.5 seconds long. The background should just be some colour, I am able to create such video from a photo, but cant find anywhere how this could be done without a photo, just using text to create such video. Can you help me ? Thanks in advance
• 17:42
  Can I use R to trim a video, like I do with ffmpeg? - Tae Jin Hwang Newest 'ffmpeg' Questions - Stack Overflow
  I have several video files that I need to trim/cut (i.e., cut 00:05:00 - 00:10:00 among 2-hour-long video). I can trim/cut each video by using ffmpeg. However, since I have +100 video files that need to be trimmed, I would like to use R loop function to do it. I've found that there are several R packages that people use for video processing, such as imager or magick, but I cannot find a way to trim a video using R. Can you help me? (...)
• 03:32
  ffmpeg 'or' filter - what's the significance of red and blue? - BETLOG Newest 'ffmpeg' Questions - Stack Overflow
  I'm tinkering with various ffmpeg filters to help me visualise the magnitude of difference certain presets use, and I notice a couple of filters display a lot of certain primary colours. Specifically in this case: red and blue in an 'or' filter, and green in an 'and' filter. It seems useful to be able to tell WHICH input is being indicated, or to understand how the filters act in terms of sequence, and I'm hoping these colourations will help with this. Or at least I'd like to better understand whatever they do represent. In the (...) -- ,
• 17:22
  Android Studio - Append two videos but showing black screen - Darkhmar Newest 'ffmpeg' Questions - Stack Overflow
  First of all hello, When I add another mp4 file at the end of an mp4 file, the video looks completely black screen but I can get the video sounds. If I add a copy of a video to the end of it, I saw that there was no problem, but this is not a scenario I want. I am getting the "text relocations" error when merging with the FFmpeg library. (This problem is fixed when I change this library version, but I have other problems. Therefore, mp4parser is an alternative I see.) The piece of code that allows the videos to be merged is as follows. Thank you from now. private (...)
• 17:09
  Executing shell script on Google Cloud Functions - João Abrantes Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to encode .mp4 videos into hls using FFmpeg. I am using subprocess to call FFmpeg: def transcoder(data, context): """Background Cloud Function to be triggered by Cloud Storage. This generic function logs relevant data when a file is changed. Args: data (dict): The Cloud Functions event payload. context (google.cloud.functions.Context): Metadata of triggering event. Returns: None; the output is written to Stackdriver Logging """ try: input_filename = data['name'].split('/')[-1] #videos have no (...)
• 17:02
  Stream newly generated jpgs as mpegts with ffmpeg - Theodor Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to generate a mpegts stream from a jpg image that is continuously being overwritten, with the help of ffmpeg. In my current setup another program is writing the new images to an image called "cam0.jpg", with a framerate that varies between 1 to 20 fps, and I use this command to generate a mpegts stream ffmpeg -f image2 -framerate 20 -pattern_type none -stream_loop -1 -re -i cam0.jpg -f mpegts -c:v libx264 -preset superfast udp://127.0.0.1:23000 The stream works fine for a while when it suddenly stops without any obvious error or warning. I have figured out (...)
• 16:48
  Unable to load FFMpeg in file in laravel project - Hatim Ahmad Newest 'ffmpeg' Questions - Stack Overflow
  i'm trying to convert a varity of audio files into a specific audio type of my chossing on my laravel project. on my search i landed on a package called Laravel FFMpeg, i started with a fresh installation with laravel 6.2, and did the installation as it shows on github, as soon as i started using it i had this error : FFMpeg\\Exception\\ExecutableNotFoundException: Unable to load FFMpeg in file C:\\Users\\Hatim\\Desktop\\Projects\\Audio\\vendor\\php-ffmpeg\\php-ffmpeg\\src\\FFMpeg\\Driver\\FFMpegDriver.php on line 55 #0 (...)
• 16:01
  Make a Form with ffmpeg action - Yozuu Newest 'ffmpeg' Questions - Stack Overflow
  I would like to know if it would be possible to create a form with ffmpeg actions on a Rails application. Because there is not a lot of documentation on this. On my application, users can upload a video, but I would like those who can, through a form with for example radio button, to manipulate their video. For example by adding a Reverb effect on the audio. Or add audio over the video. But I can't find documentation on a form with ffmpeg. But how to link ffmpeg action in a form on rails ? If you have an example it will help me a lot. Thank you (...)
• 15:55
  FFMPEG MP3: showfreqs to binary file - Brian Newest 'ffmpeg' Questions - Stack Overflow
  I need to process frames inside an MP3 stream by freq and volume. Using FFProbe [1] I can dump binary data (hex format) using show_data, but I'm not sure how that data represent freq, and volume of the audio track. Using FFmpeg [2] I could generate a video showing freq and volume, but I need to process this data as a binary file, not as a video. eg. open (file_stream) > foreach (row as data) Freq and Volume videos generated from MP3: http://ffmpeg.org/ffmpeg-filters.html#toc-showfreqs ** showfreqs https://gist.github.com/seyoum/4455e9bed74241bfbd640a8083fd38b3 (...) -- http://ffmpeg.org/ffmpeg-filters.html#toc-showfreqs, https://gist.github.com/seyoum/4455e9bed74241bfbd640a8083fd38b3, http://ffmpeg.org/ffprobe.html, http://ffmpeg.org/ffmpeg.html
• 15:02
  av_hwdevice_iterate_types returns an empty list - Ruslan Ablyazov Newest 'ffmpeg' Questions - Stack Overflow
  I used an example https://github.com/FFmpeg/FFmpeg/blob/master/doc/examples/hw_decode.c The av_hwdevice_iterate_types function returns an empty list. What could be the reason? And avcodec_find_decoder_by_name("h264_cuvid") returns NULL. FFmpeg version: ffmpeg version 4.3 Copyright (c) 2000-2020 the FFmpeg developers built with gcc 8 (Debian 8.3.0-6) configuration: --enable-gpl --enable-ladspa --enable-libpulse --enable-libsoxr --enable-libspeex --enable-avfilter --enable-avresample --enable-postproc --enable-pthreads --enable-libass --enable-libfreetype (...) -- https://github.com/FFmpeg/FFmpeg/blob/master/doc/examples/hw_decode.c
• 13:03
  Using FFMPEG to extract multichannel audio from Quicktime - Jonas Kvist Jensen Newest 'ffmpeg' Questions - Stack Overflow
  So I have a quicktime file with proxy video content and 8 audio tracks. I need to extract the audio into a single multichannel wave file. I think this is probably pretty simple, but I can't find the solution. What I have: ffmpeg -i input.mov -c:a copy output.wav This gives me just a single channel, so there must be some mapping issue going on.
• 12:12
  What is the internal difference between these two modes when getting the psnr value using ffmpg? - peter12 Newest 'ffmpeg' Questions - Stack Overflow
  Option: -psnr as H264 parameter ffmpeg -i input.mp4 -vf -codec:v libx264 -psnr -f mp4 -b:v 100k -pass 1 output.mp4 Option : Comparing input and output with the psnr filter. ffmpeg -i input.mp4 -vf -codec:v libx264 -f mp4 -b:v 100k -pass 1 output.mp4 ffmpeg -i output.mp4 -i input.mp4 -filter_complex psnr -f null –
• 11:57
  How use FFMPEG to merege multiple audios and videos with delay and offset for any streams - Morak Newest 'ffmpeg' Questions - Stack Overflow
  I want to use FFMPEG to merge multiple audios and videos. Materials are: three short audio clips (S1.mp4, S2.mp4, S3.mp4) without video(files only have audio stream), three video clips (V1.mp4, V2.mp4, V3.mp4) without sound(files only have video stream). I have start-time of all materials(i.e: start-time of "S1.mp4" is 0 sec... start-time of "S2.mp4" is 1220.5 sec... start-time of "S3.mp4" is 2500.12 sec... and start-time of "V1.mp4" is 15.22 sec... start-time of "V2.mp4" is 853.99 sec... start-time of "V3.mp4" is 2901.37 (...)
• 10:14
  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
• 09:55
  video uploading from app using ffmpeg showing error - Dhananjay Acharya Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to implement video upload from app using ffmpeg. when I m trying to upload video showing this errors. sometime video upload keep on loading. any help. sometimes app freezes and for some videos showing out of memory error when i run in a real device logcat details 2020-07-09 12:48:14.240 5226-7065/com.mik I/OMXClient: MuxOMX ctor 2020-07-09 12:48:14.369 5226-5226/com.mik I/Choreographer: Skipped 32 frames! The application may be doing too much work on its main thread. 2020-07-09 12:48:14.377 5226-5857/com.mik D/AudioManager: getStreamVolume isRestricted (...)
• 09:44
  Recording transport stream to file in ffmpeg - Neil Bernard Newest 'ffmpeg' Questions - Stack Overflow
  I'm streaming a dvb-t mux and I want to dump it to file using ffmpeg on another PC. Here is the command: ffmpeg -i rtp://192.168.1.93:20000 -acodec copy -vcodec copy d34_tw.ts For some reason though its only saving 1 video and 1 audio random pid? not the whole TS? Thoughts? Neil
• 09:19
  Why does ffmpeg burn Chinese subtitles(ass) without word wrap？ - bjjoy Newest 'ffmpeg' Questions - Stack Overflow
  my ffmpeg burn subtitle example ffmpeg burn ass subtitle to mp4. The properties WrapStyle(0:word wrap, 1: the char '\\N' or movie edge force change line, 2: only \\n and \\N change line). English subtitle run OK. Chinese subtitle has no word wrap when WrapStyle=0. -- my ffmpeg burn subtitle example
• 07:41
  FFmpeg adding image watermark to video process is very slow - Tushar Lathiya Newest 'ffmpeg' Questions - Stack Overflow
  I am adding image watermark to video with help of FFmpeg but FFmpeg takes an inordinate amount of time with the below command- String[] cmd = "-i",videoPath, "-i", waterMark.toString(),"-filter_complex","overlay=5:5","-codec:a", "copy", outputPath; so i tried another command which was little bit faster but increase output file size(which i do not want) String[] cmd = "-y","-i", videoPath, "-i", waterMark.toString(), "-filter_complex", "overlay=5:5", "-c:v","libx264","-preset", "ultrafast", outputPath; Some one please explain to me how to (...)
• 05:44
  FFmpeg stream video to rtmp from frames OpenCV python - batata oussama Newest 'ffmpeg' Questions - Stack Overflow
  In the context of indistural project, i developed a real time application to detect person with AI algorithms. In local i get and display videos with OPENCV operating with frames. The objective is to realise a stream video from frames of Opencv to rtmp server FFmpeg seems a good perspective. However, often the stream strats from .mp4 or several .jpg to publish stream video on rtmp server. Thank you.

8 July

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

• 23:12
  How to create video from audio files using ffmpeg [duplicate] - 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
• 22:16
  Encoding to h264 failed to send some frames using ffmpeg c api - Vuwox Newest 'ffmpeg' Questions - Stack Overflow
  Using FFMPEG C API, Im trying to push generated image to MP4 format. When I push frame-by-frame, the muxing seems to failed on avcodec_receive_packet(...) which return AVERROR(EAGAIN) on the first frames, but after a while is starting to add my frame, but the first one. What I mean, is that when push frame 1 to 13, I have errors, but after frame 14 to end (36), the frame are added to the video, but the encoded image are not the 14 to 36, instead its the frame 1 to 23 that are added. I don't understand, is this a problem with the framerate (which i want 12 fps), or with (...)
• 21:53
  What is pkt_size in ffprobe -show_frames? - Null_404 Newest 'ffmpeg' Questions - Stack Overflow
  I am running ffprobe -show_frames and _show_packets on a .ts file and trying to find the size of each I B P frame in the stream. Is this field in the -show_frames option getting what I need? And for the size field given by -show_packets, all the packets are very different sizes. I thought the TS packets should all be around 188 bytes, but that doesn't seem to be the case based on the output. Thanks in advance
• 21:26
  dockerfile apt-get install ffmpeg unmet dependencies - Martin Newest 'ffmpeg' Questions - Stack Overflow
  I have a Dockerfile which looks like this: FROM node:carbon VOLUME ["/root"] ADD setup-ffmpeg.sh /root RUN /root/setup-ffmpeg.sh # Create app directory WORKDIR /usr/src/app # Install app dependencies # A wildcard is used to ensure both package.json AND package-lock.json are copied # where available (npmⓐ5+) COPY package*.json ./ RUN npm install # If you are building your code for production # RUN npm install --only=production # Bundle app source COPY . . EXPOSE 8080 CMD [ "npm", "start" ] Which tries to run (...)
• 21:10
  Set PART_NUMBER for TRACK (30) using ffmpeg in matroska - Tobias Brohl Newest 'ffmpeg' Questions - Stack Overflow
  I would like to set PART_NUMBER on TRACK (30) level (indicating the track number according to spec) in a matroska file using ffmpeg, and I don't know how to do so. When using -metadata track=7 ffmpeg appears to set PART_NUMBER on Level 40, or at least it is interpreted as Disc Nr by VLC (didn't check with mkvtoolnix). ffprobe however displays such metadata as PART_NUMBER, but when set on level 30 it is displayed as track, which makes sense to (...)
• 21:04
  Deal with dropped frames in live stream - arunk2 Newest 'ffmpeg' Questions - Stack Overflow
  We encode a stream (RTMP) into HLS with ffmpeg. During the conversion we observe a lot of variation in fps. We could trace it back to the 'frames' dropped at source (during video upload from tools like OBS). This introduces a bad CX during playback of generated HLS - like buffering/getting-stuck. Question: What is the typical way to handle dropped frames in live stream graciously - like duplicating previous frames or other means? Pointers to related (...)
• 21:02
  ffmpeg live encoding with variable fps matching source - arunk2 Newest 'ffmpeg' Questions - Stack Overflow
  We are trying to encode a rtmp stream to HLS. During conversion we observe variation in the fps during processing (fps -> no.of frames processed per second). Observation: While tracing back the problem we observed, when there are more frame drops at source (during video upload from tools like OBS), we see a low fps for processing. We are using a fixed frame rate with '-r 30' parameter for encoding. we observed ffmpeg is waiting for 30 frames from input stream to to process, which causes delay in chunks generation (ts files in our case, as we use HLS). This slow (...)
• 15:07
  How to use ffmpeg to change the h264 properties, yuv, fps, tbr, tbn, and tbc of an mp4 file? - bguiz Newest 'ffmpeg' Questions - Stack Overflow
  Using ffmpeg, I would like to convert a video file such that its video stream changes like so: Current video stream: Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 2560x1080 [SAR 4:3 DAR 256:81], 60 kb/s, 15 fps, 15 tbr, 15360 tbn, 30 tbc (default) Target video stream: Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), yuv444p, 2560x1080, 272 kb/s, 20 fps, 20 tbr, 10240 tbn, 40 tbc (default) (values that differ: h264 properties, yuv, fps, tbr, tbn, and tbc) ... and its audio stream changes like so: Current (...)
• 15:00
  How to find out exact container/format of a video file using ffprobe? - parthagar Newest 'ffmpeg' Questions - Stack Overflow
  I would like to find out the exact format/container of a video file using ffprobe but I am unable to reach to the "exact" part of it. When I run this sample command: ffprobe -hide_banner -loglevel fatal -show_error -show_format -print_format json INPUT I receive this output: "format": "filename": "INPUT", "nb_streams": 2, "nb_programs": 0, "format_name": "matroska,webm", "format_long_name": "Matroska / WebM", "start_time": "0.000000", "duration": "2.969000", "size": "2376430", "bit_rate": "6403314", "probe_score": (...)
• 14:37
  ffmpeg or vlc playlist to rtmp stream? - Jake J Newest 'ffmpeg' Questions - Stack Overflow
  So, I've read all the articles here and unfortunately I can't seem to find the answers I'm looking for. I've gotten close, but the certain magic strings allude me. I'm running hls live streaming (nginx) on ubuntu 17.10 server. In short, I can get the server running one video at a time fine with ffmpeg (with subtitles) using the following: ffmpeg -re -i "1.mkv" -vcodec libx264 -vprofile baseline -g 30 -b:v 1000k -s 852x480 -acodec aac -strict -2 -b:a 192k -ac 2 -vf subtitles=1.srt -f flv rtmp://localhost:1935/show/stream Though, I (...)
• 14:13
  ffmpeg zero latency webcam streaming - SimpleSimon Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to use ffmpeg to stream a webcam with as close to zero latency as possible. My test environment is streaming from localhost to localhost, on a macOS machine. I've tried every parameter switch that I can understand - and many suggestions found both here and elsewhere. But, the latency is persistently just about one second. And to be honest, none of the options that I've tried appear to make any difference at all. I've read that it should be possible to get the latency down to a couple of hundred milliseconds - or even as low as a single video (...)
• 13:26
  How do you add pydub (and eventally ffmpeg) and to the python path in Windows? - KReuZ_o13 Newest 'ffmpeg' Questions - Stack Overflow
  I'm relatively new to messing around with audio in Python, so I'm trying to set up for it. I need to add pydub to Python path, and I have no idea how to do it. Please help. Also, ffmpeg keeps crashing when I try to run it, and I don't know what to do.
• 13:16
  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 (...)
• 12:40
  How do I use this FFMPEG command in python script? - Reshma Walhekar Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to extract a single frame at every second from a video , Using this command on command line using ffmpeg ffmpeg -i input_file.mp4 -r 1 %04d.jpg I am able to do this task using ffmpeg on command line. But I want to use same command in python script, how do I do that and what should be the code? I am very new to this field.
• 11:51
  Video not playing after ffmpeg vintage effect is applied - Khawar Raza Newest 'ffmpeg' Questions - Stack Overflow
  I am using ffmpeg 3.3.4 for android. I am executing below simple command: ffmpeg -i input.mp4 -vf curves=vintage -c:a aac ouput.mp4 and ffmpeg -i input.mp4 -vf curves=vintage -c:a copy ouput.mp4 The resultant video is not playing in android default video player and Exoplayer as well. I tried on windows using windows media player, it only plays sound but no video. Although VLC media player is playing it properly on android and windows. Any idea whats missing in the above command? Output video (...) -- https://www.metadata2go.com/result/e9f9b7db-0a91-4148-9073-1a1162f0c7f0
• 09:42
  Centos7 Server, Masrer Playlist can't create CODECS when use ffmpeg with libx265 (h.265) - 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 #ffmpeg ffmpeg version N-98423-g584f396 Copyright (c) 2000-2020 the FFmpeg developers built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-39) configuration: --prefix=/./usr/local/ffmpeg --bindir=/./usr/local/bin/ --pkg-config-flags=--static --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags=-L/root/ffmpeg_build/lib --extra-libs=-lpthread --extra-libs=-lm --bindir=/root/bin --enable-gpl --enable-libfdk_aac (...)
• 07:59
  Declaring Variables in ffmpeg in a batch file - John Smith Newest 'ffmpeg' Questions - Stack Overflow
  So I wanted to declare a variable and then use that variable throughout my ffmpeg commands in a batch file. I've seen another question about using the duration of the video, but I want to be able to change the timecode I want to cut at myself. However, the problem is I don't think I'm declaring the variable properly because it says it 00:52:00 is unrecognised, this is what I've tried so far. $timecodeToCut = 00:52:00 rem The following command can be used to trim an mp4 file at a specified position. In this example it copies the first 42 minutes of the (...)
• 07:25
  Problem when deploy NodeJS with FFMpeg to IIS server by IISNode - Hùng Phạm Newest 'ffmpeg' Questions - Stack Overflow
  I have a nodeJs project stream RTSP to HTML. I use rtsp-ffmpeg with socket io server.js: var cams = arrData.map(function(device, index) var config = JSON.parse(device.CauHinhThietBi); var rtspUri = getRtspUrl(config.IPLAN, config.RstpPort, config.Username, config.Password, streamType.MainStream); console.log(rtspUri); debugger; var stream = new rtsp.FFMpeg(input: rtspUri, rate: 25, resolution: '640x480', quality: 3); stream.on('start', function() console.log('stream ' + (...)
• 06:48
  FFMPEG mux video and audio (from another video) - mapping issue - Mark Newest 'ffmpeg' Questions - Stack Overflow
  I would like to place the audio from a video to another video without an audio (in one command): ffmpeg.exe -i video1_noAudio.mov -i video2_wAudio.mov -vcodec copy -acodec copy video1_audioFromVideo2.mov I guess "-map" is the correct way to do it but I got confused with it. Can you suggest how to resolve it?
• 03:06
  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 (...)
• 02:50
  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 (...)
• 02:34
  Getting (Estimated) Time Offset of the Errors Reported by ffmpeg - Haru Newest 'ffmpeg' Questions - Stack Overflow
  I'm using ffmpeg to check for errors in video files, but while it reports tons of issues it doesn't tell me where exactly the error happens in the file. It just dumps some crazy long hex numbers (0x7fa…) which doesn't tell me anything. Is there a way to make it report some timestamps, or at least estimated timestamps, or byte-offsets into the stream? I tried the -debug_ts flag, but nothing changed in the output. $ ffmpeg -debug_ts -v error -i a_broken_file.mp4 -f null - [h264 ⓐ 0x7fa513023400] Reference 4 >= 4 [h264 ⓐ 0x7fa513023400] error while decoding MB (...)
• 01:58
  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 (...)

7 July

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

• 23:58
  ffmpeg stops capturing whole hour of HTTP stream after some time - CompuChip Newest 'ffmpeg' Questions - Stack Overflow
  First of all, sorry if I'm using the wrong terminology. I've been playing around with nginx and I'm still a bit confused about RTMP and HLS and other acronyms. I've managed to setup OBS to stream to an nginx server, which takes the RTMP stream and chops it into pieces for HLS. Here's the relevant part of the nginx configuration file. rtmp server listen 1935; chunk_size 4000; ping 30s; deny play all; application live live on; hls on; hls_nested on; # Create a new folder for each stream hls_path (...)
• 19:42
  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): -- , , ,
• 19:00
  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 stream. How can I generate the (...)
• 17:57
  Class 'Pbmedia\\LaravelFFMpeg\\FFMpeg' not found - Elix Newest 'ffmpeg' Questions - Stack Overflow
  Inside an Artisan command I have this FFMpeg::fromDisk('songs') ->open('this.mp4') ->export() ->toDisk('converted_songs') ->inFormat(new \\FFMpeg\\Format\\Audio\\Aac) ->save('yesterday.aac'); At the top of the file I already added use Pbmedia\\LaravelFFMpeg\\FFMpeg; I am getting this error Class 'Pbmedia\\LaravelFFMpeg\\FFMpeg' not found I am also using Laravel-zero, and I have tried everything possible. Been stuck on this for hours now, any (...)
• 17:29
  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 (...)
• 17:07
  FFMPEG Error Processing Batch Downscale Files - Jembut69 Newest 'ffmpeg' Questions - Stack Overflow
  Hello i am new here and i am new to FFMPEG I tried to make loops of my ffmpeg downscale command for %%a in ("D:\\Data\\Movie\\*.*") do ffmpeg -i "%%a" -vsync 0 –hwaccel cuvid -c:v h264_cuvid –resize 640x480 -c:a copy -c:v h264_nvenc -b:v 5M "D:\\Data\\Movie\\Vids\\%%~na.mp4" and i got this error in FFMPEG [NULL ⓐ 000001f4f0663a00] Unable to find a suitable output format for 'ΓÇôhwaccel' ΓÇôhwaccel: Invalid argument What should i do ? any help is really (...)
• 16:40
  Bat Command of FFMPEG [closed] - Foloja Newest 'ffmpeg' Questions - Stack Overflow
  Good day dear all users, I would like to straight to the problem. I have a folder in D:\\Data\\Movie as input folder and D:\\Data\\PabloRojas as output folder . i want to process all the videos inside it with FFMPEG Command below; ffmpeg -vsync 0 –hwaccel cuvid -c:v h264_cuvid –resize 640x480 -i "input" -c:a copy -c:v h264_nvenc -b:v 5M "output" The question is, what is the bat command that automatically process my files in input folder with my FFMPEG Command and put it in output folder?  (...)
• 15:44
  ffmpy.FFExecutableNotFoundError: Executable 'ffmpeg' not found? - Cass Newest 'ffmpeg' Questions - Stack Overflow
  I have been trying to get rid of this error for a long time by installing (pip, PATH variable) but nothing... Help? My code: import ffmpy ff = ffmpy.FFmpeg(inputs=path+'/Stage1Rap.wav': None, outputs=path+'/FinalRap.mp3': ["-filter:a", "atempo=0.5"]) ff.run()
• 15:44
  ffmpeg mp4 to webm through icecast server livestream - Aporie Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to stream huge MP4 videos (2.5Go) on an icecast server. After playing a lot with ffmpeg options to get the best quality/speed encoding settings, I'm facing a strange issue. If I launch my ffmpeg streaming and load the video in the browser I can see it, but if I try to join it after 30s, I just get a black screen with the bottom video player bar. Is there somewhere we can see errors ? And where ? I don't really get if the error is coming from ffmpeg / icecast / my web browser ... If somebody can give me a clue. Here is my (...)
• 15:42
  how to scale video using ffmpeg with -filter_complex - JuraganFilm Newest 'ffmpeg' Questions - Stack Overflow
  im trying to encode my video with watermark and subtitles , i and i have this codes that work for watermark and subtitles ffmpeg -hide_banner -i $video -i $TITLE.ass -loop 1 -i $WATERMARK -loop 1 -i $LOGO -filter_complex "[$videomap]drawtext=text='$TEXT':fontfile=/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf:y=h-line_h-100:x=w-(t-$MARQUE)*w/15:y='10':enable='lt(mod(t\\,1000)\\,100)':fontcolor=orange:fontsize=$FONT:shadowx=$SHADOWX:shadowy=$SHADOWY,ass=$TITLE.ass[FID1];[FID1][2:v]overlay=10:$WATERMARKPOSITION:repeatlast=0:enable='between(t,300,600)'[F
• 13:16
  Batch Downscale to 480P in FFMPEG with NVenc GPU Nvidia [closed] - jilboobs seksi Newest 'ffmpeg' Questions - Stack Overflow
  How to batch downscale videos using FFMPEG, i would like to downscale to 480P and using my GPU NVidia NVenc Command with x265 coding Command with x264 coding Both using GPU Nvidia PS: THERE IS NO SUCH MANUAL IN FFMPEG THAT LET YOU KNOW HOW TO BUILT .BAT COMMAND TO DOWNSCALE WITH FFMPEG! THANK YOU LORD GOD COMPO!!!
• 13:41
  Remove the same clip in two videos - V1rus_Falcon Newest 'ffmpeg' Questions - Stack Overflow
  i'm trying to remove the intro clip from two video just like netflix does with its "skip the intro" feature. i tried with emgu.cv for extracting the frames, phash for hashing the frames and checking the differences between them. I would prefer use ffmpeg or opencl. The problem is to intersect two video to find out what is the intro and after finded it, find the start and finish point of the intro
• 13:23
  How are ARM GPUs supported by Video display/decoding/encoding Programs? - John Allard Newest 'ffmpeg' Questions - Stack Overflow
  I often see ARM-based chips advertising onboard GPUs, like the RPI3 that came with "Broadcom VideoCore IV ⓐ 250 MHz" and the OdroidC2 that comes with a "Mali-450 GPU". These chips advertise stuff like "Decode 4k/30FPS, Encode 1080p,30FPS" as the capabilities of the GPU for encoding and decoding videos. My question is this - how does a program like Kodi, VLC, or FFMPEG come to make use of these GPUs for actual encoding and decoding? When I do research on how to make use of the Mali-450 GPU, for example, I find some esoteric and poorly documented C-examples of sending compressed frames (...)
• 13:21
  MLT query video_codecs not listing libx264 - Terryn94 Newest 'ffmpeg' Questions - Stack Overflow
  Querying video codecs does not list libx264 as an available codec [terryⓐlocalhost ~]$ 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 (...)
• 11:59
  ffmpeg video slides vertically after 'Invalid buffer size, packet size expected frame_size' error (vsync screen tearing glitch)? - GlabbichRulz Newest 'ffmpeg' Questions - Stack Overflow
  I have a video which i want to cut and crop using opencv and ffmpeg. I want the output to be H265, so i am using a ffmpeg subprocess (writing frame bytes to stdin) as explained here. This is a minimum version of my code that leads to the error: import os, shlex, subprocess, cv2, imutils VIDEO_DIR = '../SoExample' # should contain a file 'in.mpg' TIMESPAN = (3827, 3927) # cut to this timespan (frame numbers) CROP = dict(min_x=560, max_x=731, min_y=232, max_y=418) # crop to this area # calculate output video size size = (...) -- , , UCF Aerial Action Dataset
• 11:34
  How to get information of dropped frames and resolution of the played video from Video player like VLC - Ashutosh Singla Newest 'ffmpeg' Questions - Stack Overflow
  I was playing 360° videos using whirligig player for my subjective test and I was wondering how can I get the information of dropped frames and resolution of video played by the player. The source resolution of the video is 1080p, and the frame rate is 30fps When I watching videos on YouTube, I am able to derive the above information by right clicking and looking at the 'stats for nerds' option - see example below: But didn't get the required information for the videos played on whirligig player such as dropped frames, actual bitrate (...) -- whirligig,
• 11:05
  Use FFMPEG to record a RTSP stream to a local file - ggs Newest 'ffmpeg' Questions - Stack Overflow
  I'm looking for a snippet (C/ObjC) in which an up-to-date version of FFMPEG is used to capture a RTSP or RTP stream and save it as a .mp4 file onto the device (with a start/stop record button) Almost all snippets are are out-dated. I would like to use FFMPEG/Libav v3.2-v3.4 I'm using IJKPlayer to display the streams, which works nicely, but there's no record functionality included. Any suggestions? Thanks! -- IJKPlayer
• 09:44
  Python add audio to video opencv - olokelo Newest 'ffmpeg' Questions - Stack Overflow
  I use python cv2 module to join jpg frames into video, but I can't add audio to it. Is it possible to add audio to video in python without ffmpeg? P.S. Sorry for my poor English
• 09:30
  Remove audio from mp4 using python - Kevin Newest 'ffmpeg' Questions - Stack Overflow
  I am working on a project where I cut a video into a smaller video but I want to get rid of the audio. How can I do that
• 09:12
  FFMPEG - can you have comments in script files? - rossmcm Newest 'ffmpeg' Questions - Stack Overflow
  Because of batch's poor ability to handle multi-line strings, I'm using FFMPEG script files more and more for filter_complex arguments. I'm wondering if there is any way to include comments in these files. They seem to be quite tolerant of white space and line breaks. I've tried: # # comment # and ; ; comment ; and ` ` comment ` and ' ' comment ' with no success. It doesn't look as if comments are officially supported, but I'm wondering of there is some (...)
• 08:16
  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" . I want to feed data to a sustaining decoder which can remember the previous P frame , so after feeding one B frame, the decoder return a (...)
• 07:40
  Error opening video file with openCV cv2VideoCapture - kollo Newest 'ffmpeg' Questions - Stack Overflow
  I have a video file here /data/out.mp4 and its copy /data/out. I'm on Osx Sierra with Xcode 8. Open video with mp4 extension is ok but get error with no extension or any other format. I tryed opencv 2.4 and latest 3.2 from git. Compiled with ffmpeg release/2.0 and also tryed release/3.0 With opencv version 3.2: Python 2.7.10 (default, Jul 30 2016, 19:40:32) [GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.34)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> import cv2 >>> (...)
• 05:03
  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 (...)
• 04:22
  How to convert a video into m4v format in python without saving to a file - Aseem Newest 'ffmpeg' Questions - Stack Overflow
  I would like to convert videos into m4v format in python without saving video to a file. I tried ffmpeg - ffmpeg -i v1.mp4 v1.m4v . It works great but it needs to store the output to a file. My code runs on google app engine where storing files is not advised. ffmpeg-python also requires the output to be streamed to a file. Is there a way to build a python function f1(input_video) which would return output_video in m4v format.

6 July

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

• 23:06
  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. The problem is to intersect two video to find out what is the intro and after finded it, find the start and finish point of the intro
• 21:48
  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 (...)
• 21:48
  Frame Number Overlay With FFmpeg syntax - DougM Newest 'ffmpeg' Questions - Stack Overflow
  This has been covered before, and the consensus solution is (minor variations on) the following command line: ffmpeg -i input.MP4 -vf "drawtext=fontfile=Arial.ttf:text='%frame_num':r=25:x=(w-tw)/2:y=h-(2*lh):fontcolor=white:fontsize=50:" -c:a copy output.mp4 Unfortunately, when I apply this to my MP4 files the text that gets placed is "r=25". I've tried every variation that I can think of, but none of them result in a frame number displayed that correlates to the frames. I know that it is aware of frame numbers because as it runs in the command line it (...)
• 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
• 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 $(find singleGraphs -maxdepth 1 -name "*.png" | sort -V) | \\ ffmpeg \\ -framerate 2 \\ -i - \\ -pattern_type glob \\ -q:v 1 \\ -y \\ Analysis.gif \\ ; The resulting gif picture is poor in color, as you can see in the animation below. I probably do use any argument wrong, or something is (...) -- , The single Gnuplot Pictures
• 18:08
  ffmpeg from .mp3 to .al appears to slow and deepen the audio - Darpeh Newest 'ffmpeg' Questions - Stack Overflow
  I have an mp3 input file that is 22050Hz and 48kb/s. I need to convert it to a .al file in order to stream it to a camera on my network for output. ffmpeg -i file.mp3 file.al creates a file that does play but the bitrate of the output is 176kb/s and it clearly slower/deeper sounding. I have tried -b:a 48k and -filter:a without success but I could be doing it wrong. Documentation states that this is the format I need: PCM ADPCM G.711A G.711.Mu G.726 G.729 MPEG2 AMR (...)
• 17:54
  Compiling ffmpeg for android on Mac - SlaneR Newest 'ffmpeg' Questions - Stack Overflow
  I tried to compile ffmpeg for android on Mac, but it does not work for me. #!/bin/bash NDK=/Users/user/Library/Android/sdk/ndk-bundle SYSROOT=$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 \\  (...)
• 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
• 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) (...)