28 February

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

• 07:30
  Trying to use the arcade library on Python3 with Debian 10 errors with pyglet_ffmpeg - Colin Newest 'ffmpeg' Questions - Stack Overflow
  I've been trying to use the arcade library this morning with python3 but keep getting nothing but errors. My environment is Debian 10 (buster) I checked first to ensure I have python 3 installed, this confirmed as Python 3.7.3 I double checked (according to the arcade library website arcade linux installation instructions and ran the install for python3 to make sure that pip and the required libraries were installed. I then ran the command to install the library sudo pip3 install arcade And to test it, copied and pasted the happy_face.py example. However when I tried to run it I got (...) -- arcade linux installation instructions
• 06:57
  ffmpeg how do I choose the correct Audio track? - Duk Newest 'ffmpeg' Questions - Stack Overflow
  I'm converting a few .mkv files and need to choose the right Audio track, but dont know how. This is the command I use: ffmpeg -i "movie.mkv" -vcodec h264 -acodec aac -strict -2 output.mp4 It is recommended by the webservice where I want to upload the video. Let's say the Audiotracks look like this: mkvmerge -i "movie.mkv" Track ID 0: video (MPEG-4p10/AVC/h.264) Track ID 1: audio (AC-3) Track ID 2: audio (TrueHD) Track ID 3: subtitles (HDMV PGS) How do I select "Track 1" or "Track 2" for Output? And which track will be selected, if I leave the Code like that? (and why?) Thanks for (...)
• 06:05
  How can I batch/sequentially download m3u8 files using ffmpeg & Power Shell in Windows? - piznajko Newest 'ffmpeg' Questions - Stack Overflow
  There's a similar question asked asked by Yesterdec but for Mac batch scirpt I'm currently downloading m3u8 videos one by one using the following Power Shell command on Windows: ffmpeg -i "http://example.com/video_url.m3u8" -c copy -bsf:a aac_adtstoasc "output.mp4" I want to automate this process, using some FetchURL.bat scirt and a URLs.txt file with the URLs (each URL there is seperated by a new line) to download one by one multiple m3u8 videos from the (...)
• 06:38
  The bottom of video decoded by ffmpeg library is not good - Mr. Jang Newest 'ffmpeg' Questions - Stack Overflow
  I made a MFC program that plays a video stream. The video stream comes from RTP and codec is H.264. I used ffmpeg library. My problem is the bottom of my video play is not good. Not good means it has blur. The resolution of the video is 1920×1200. What should I do to solve this problem? Thank you in advance!
• 01:46
  Configure and Build OpenCV to Custom FFMPEG Install - enderland Newest 'ffmpeg' Questions - Stack Overflow
  I cannot seem to configure OpenCV to link to a non-/usr/lib set of FFMPEG libraries. My LD_LIBRARY_PATH contains a direct link to the folder for the custom install of FFMPEG: LD_LIBRARY_PATH=/pathto/ffmpeg-0.10.2/lib Additionally, I've configured pkgconfig as: PKG_CONFIG_PATH=/samepathto/ffmpeg-0.10.2/lib/pkgconfig/ Within CMake however I cannot find any setting for path to FFMPEG - either in basic or custom. The only setting related to FFMPEG appears to be WITH_FFMPEG type setting (set to ON). I can build OpenCV but it seems to link to the system libraries for libavcodec - this (...)
• 00:20
  webm to mp4 conversion using ffmpeg - Pavan K Newest 'ffmpeg' Questions - Stack Overflow
  When I try to convert a webm file to mp4 the output is very very choppy and it appears as if many frames have been dropped by ffmpeg I used the following commands to convert ffmpeg -i movie.webm movie.mp4 ffmpeg -i movie.webm -vcodec libx264 movie.mp4 ffmpeg -i movie.webm -vcodec libx264 -qscale 0 movie.mp4 All of them have the same problem. When I use ffprobe it seems to show the frames more or less properly. UPDATE: built on Jun 14 2013 14:31:50 with gcc 4.7 (Ubuntu/Linaro 4.7.2-2ubuntu1) configuration: --prefix=/home/user2/ffmpeg_build (...)

27 February

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

• 22:56
  FFMPEG Video loop from images files - Nesan Mano Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to make a video from a bundle of image files and then apply a an overlay on top of it.Another requirement is to make the video loop 3x. It is simply not working. The first three paths are pointing toward the same image bundle. (A folder containing images like the following DSC0001_0013.jpg,DSC0002_0013.jpg,etc) Observed symptoms: The script runs infinitely.I produces a video file of 0 KB.I have to abort script using CTRL+C This is my script. ffmpeg -start_number 1 -framerate 3/1 -i "C:\\Users\\xxx\\AppData\\Local\\xxx\\xxx\\xxx\\xxx\\xxx\\xxx\\xxx\\963d9d9b8e1\\DSC%04d_0013.jpg" -i (...)
• 20:51
  How can I use Windows absolute paths with the movie filter on FFmpeg? - Mason Newest 'ffmpeg' Questions - Stack Overflow
  I want to do something like -filter_complex "movie=C:\\\\User\\\\...\\\\file" but I can't because of the : in the Windows path. I tried escaping it with a \\ but no luck. I've figured out how to get around it by making everything else an aboslute path and running the command in the same directory as the file I need for the movie filter, but the only reason that works is because I only have a single movie filter. I'm hoping there's a better way.
• 20:49
  How to create a virtual webcamera device with ability to stream a video file in linux - Vlad Newest 'ffmpeg' Questions - Stack Overflow
  I need to create a script, that will stream a video file to virtual webcam, and make a virtual webcam accessible not only with ffplay /dev/videoX etc. but also with different applications like Cheese(default Ubuntu webcam app), Chrome, Discord and others. I tried solutions that use v4l2loopback and ffmpeg, but this doesn't work in Chrome/Discord/Cheese/... Now I have several webcams: /dev/video0 - Native laptop camera /dev/video1 - A camera created with DroidCamX to use phones camera as laptop camera /dev/video2 - v4l2loopback camera When I try to stream a video file to /dev/video2 with (...)
• 21:54
  How to make Gstreamer return only keyframes? - Anton Fedorov Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to figure out if there's a way to specify in gstreamer pipeline that i want only key frames from RTSP stream. In ffmpeg you can do this with with -skip_frame nokey flag. E.g.: ffmpeg -skip_frame nokey -i rtsp://184.72.239.149/vod/mp4:BigBuckBunny_175k.mov -qscale 0 -r 1/1 frame%03d.jpg The corresponding gstreamer command to read the RTSP feed looks like this: gst-launch-1.0 rtspsrc location=rtsp://184.72.239.149/vod/mp4:BigBuckBunny_175k.mov ! decodebin ! videorate ! "video/x-raw,framerate=1/1" ! videoconvert ! autovideosink Does anyone know if it is possible to ask (...)
• 20:30
  Incomplete video file when converting GIF to WEBM using FFmpeg - Eduardo Lemus Newest 'ffmpeg' Questions - Stack Overflow
  Converting from Gif to WebM in Q mode outputs an incomplete video when targeting low CRF values. For example, the output WebM running the command below has a duration of 1.15 secs when the input Gif is 2.16 secs. When targeting lower quality (e.g. CRF=~30), the video output is complete. ffmpeg.exe -i in.gif -c:v libvpx-vp9 -b:v 0 -crf 10 -an -f webm out.webm test image in.gif -- test image in.gif
• 20:05
  How to append 2 seconds of silence to an existing movie MP4 with ffmpeg? - Marie Newest 'ffmpeg' Questions - Stack Overflow
  I would like to append 2 seconds of silence to an existing video using ffmpeg. I would like to keep the last frame displayed while the 2 seconds of video playsback not a black screen. Thank you.
• 18:31
  ffmpeg processing a live screen streaming has high latency - Ant's Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to do live screen sharing using ffmpeg using the following command: ffmpeg -f avfoundation -i "1:1" -c:v libx264 -threads 4 -preset ultrafast -c:a aac -ar 44100 -f flv rtmp://localhost/live/test Now I have a rtmp server, which receives the data and using flv.js, I'm showing the live stream video on the browser. The integration works perfectly fine, but the problem was the stream is getting delayed very much. There is a delay for say atleast 10s; I'm not sure, whether we can make it less delay (more like instant screen share). Note: I'm using the Node RTMP server using (...) -- https://github.com/illuspas/Node-Media-Server
• 14:03
  Render online video from images and output mp4 file [duplicate] - Bashar Husin Newest 'ffmpeg' Questions - Stack Overflow
  what the best language or library for render video from images or texts I tried a lot of things but I can't render it. What about (Xuggler) or (ffmpeg) ....
• 09:27
  ffmpeg when use overlay output have delay [migrated] - zobydeh karimi Newest 'ffmpeg' Questions - Stack Overflow
  I Use Ffmpeg For Overlay Png on short video : For Example 5 seconds video I Use This Command : -i C:\\\\part1.mp4 -i C:\\\\txt1.png -filter_complex \\"overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2\\" -c:v libx264 -pix_fmt yuv420p -codec:a copy C:\\\\outputtext1.mp4 but output when play have delay Please Help me
• 18:31
  ffmpeg processing the live screen streaming has high latency - Ant's Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to do live screen sharing using ffmpeg using the following command: ffmpeg -f avfoundation -i "1:1" -c:v libx264 -threads 4 -preset ultrafast -c:a aac -ar 44100 -f flv rtmp://localhost/live/test Now I have a rtmp server, which receives the data and using flv.js, I'm showing the live stream video on the browser. The integration works perfectly fine, but the problem was the stream is getting delayed very much. There is a delay for say atleast 10s; I'm not sure, whether we can make it less delay (more like instant screen share). Note: I'm using the Node RTMP server using (...) -- https://github.com/illuspas/Node-Media-Server
• 16:35
  Benchmarking video encoding with FFMPEG - TheLebDev Newest 'ffmpeg' Questions - Stack Overflow
  I've built a Go-based application that transforms MP4 files into HLS playlists for VoD purposes using FFMPEG. After running a few tests on my server, I've figured out how long each minute of output video needs to be processed. I've decided to finally upgrade my server, because obviously, it's an IO/CPU heavy process so the bigger the CPU / RAM, the better. However, I need to find out how much I need to upgrade my server to get a desired output efficiency. Is there a way of benchmarking for me to find out the required specifications of any given server for a given required (...)
• 15:01
  Decode mp3 using FFMpeg, Android NDK - What is wrong with my AVFormatContext? - michpohl Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to decode am MP3 file to a raw PCM stream using FFMpeg via JNI on Android. I have compiled the latest FFMpeg version (4.2) and added it to my app. This did not make any problems. The goal is to be able to use mp3 files from the device's storage for playback with oboe Since I am relatively inexperienced with both C++ and FFMpeg, my approach is based upon this: oboe's RhythmGame example I have based my FFMpegExtractorclass on the one found in the example here. With the help of StackOverflow the AAssetManageruse was removed and instead a MediaSource helper class now serves as a (...) -- oboe, oboe\'s RhythmGame example, here
• 14:52
  FFMpeg failing token authorization - user680244 Newest 'ffmpeg' Questions - Stack Overflow
  I have a file that requires authentication for a user outside the system to read. I can curl the file with a JWT token, but FFMpeg throws a 403 error. This works: curl -H "Authorization: Bearer " --output results But this does not: ffmpeg -y -headers "Authorization: Bearer " -i -f wav out.wav -v debug The debug stack from ffmpeg shows the Authorization header passed. [http ⓐ 0x56019f430160] request: GET HTTP/1.1 User-Agent: Lavf/57.83.100 Accept: */* Range: bytes=0- Connection: close Host: Icy-MetaData: 1 Authorization: Bearer [http ⓐ 0x56019f430160] HTTP error 403 Forbidden I've (...)
• 14:10
  FFMPEG - extract two consecutive frames - Radim Burget Newest 'ffmpeg' Questions - Stack Overflow
  I need to use FFMPEG to randomly select time (e.g. 0:10) and save two consecutive frames as PNG. HOW TO SAVE FRAME TO PNG: ffmpeg.exe -ss 0:10 -y -i test.avi -vcodec png -vframes 1 -an -f rawvideo test.png HOW TO EXTRACT INFO ABOUT THE VIDEO FILE: ffprobe -v error -select_streams v:0 -show_entries stream=duration,avg_frame_rate -of default=nw=1:nk=0 test.avi Output: avg_frame_rate=120/1 duration=59.808333 QUESTION How to determine next frame? Frame rate 120/1 means 120 frames per second? EDIT Possible solution - am I correct that extracting the frames at times +(1/120 = 0.00833333) (...)
• 14:06
  ffmpeg: how can i hstack 2 videos and display a watermark outside the video area - Cédric Kamermans Newest 'ffmpeg' Questions - Stack Overflow
  I'm new to using ffmpeg and I want to combine two 1920x1080 videos using hstack. The output video also needs to be 1920x1080. At the same time I want to display a watermark at the bottom of the screen (outside the video area) and one in the top middle of the screen. So far i managed to make an hstack with padding but the watermark won't display outside the video area. Here is my first attempt: ffmpeg -y -i input1.mp4 -i input2.mp4 -i watermark1.png -filter_complex (...) -- wrong output, desired output
• 11:33
  FFMPEG Batch Copy Metadata from "Folder1File1.mp3" to "Folder2File1.mp3" in different folders - Vektorz Newest 'ffmpeg' Questions - Stack Overflow
  I have two separate files in separate folders with the same name and I would like to transfer the metadata from the file in "folder1" to "folder2". Then I would like to add a whole bunch of files fitting this same format and batch transfer all of the metadata information. From a stack exchange thread I've tried: "The following script will loop through the the files in one directory, find corresponding files in a second directory and then combine these two files into a third output directory dir1=FIRST DIRECTORY dir2=SECOND DIRECTORY output=OUTPUT DIRECTORY for file in $(ls $dir1); do (...)
• 11:15
  What do I need to use ffmpeg to convert .mov file to webm? - BStratoG Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to convert .mov files to .webm using ffmpeg from terminal on my Mac. However I don't really get what I should install to complete the conversion: I've installed libvpx brew install libvpx I've installed ffmpeg brew install ffmpeg But still when I'm trying to convert file like this ffmpeg -i vid.mov -c:v libvpx -b:v 2000 vid.webm I'm getting this error: Automatic encoder selection failed for output stream #0:0. Default encoder for format webm (codec vp8) is probably disabled. Please choose an encoder manually. Error selecting an encoder for stream 0:0 What should I do then? (...)
• 09:43
  FFMPEG Dash with tiles of thumbnail images - martyn Gilbert Newest 'ffmpeg' Questions - Stack Overflow
  As of DASH-IF IOP version 4.2, section 6.2.6 defines the notion of image-based tracks in DASH: https://dashif.org/docs/DASH-IF-IOP-v4.3.pdf. This is the ability to have an adaption set made up of mime type images that themselves are a strip of low resolution thumbnails. A player will use these thumbnails when the user hovers their mouse over the video timeline and get a preview of the the frame at that approximate timecode. Theo player website has a page dedicated to this function for playback: https://www.theoplayer.com/blog/in-stream-thumbnail-support-dvr-dash-streams I need to (...) -- https://dashif.org/docs/DASH-IF-IOP-v4.3.pdf, https://www.theoplayer.com/blog/in-stream-thumbnail-support-dvr-dash-streams
• 08:13
  ffmpeg processing the live screen streaming very slowly - Ant's Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to do live screen sharing using ffmpeg using the following command: ffmpeg -f avfoundation -i "1:1" -c:v libx264 -threads 4 -preset ultrafast -c:a aac -ar 44100 -f flv rtmp://localhost/live/test Now I have a rtmp server, which receives the data and using flv.js, I'm showing the live stream video on the browser. The integration works perfectly fine, but the problem was the stream is getting delayed very much. There is a delay for say atleast 10s; I'm not sure, whether we can make it less delay (more like instant screen share). Note: I'm using the Node RTMP server using (...) -- https://github.com/illuspas/Node-Media-Server
• 05:54
  FFmpeg with Pipe - how can I periodically grab real-time frames out of live streams in C#? - BBy Newest 'ffmpeg' Questions - Stack Overflow
  I am new to FFmpeg and C# and I want grab frames to do image processing with IP Camera. I have made the following C# class and I could get a single frame from IP Camera. class FFmpegHandler public Process ffmpeg = new Process(); public Image image; public Image init() ffmpeg = new Process() StartInfo = FileName = ⓐ"./ffmpeg/ffmpeg.exe", //Arguments = "-i http://admin:ⓐ192.168.10.1/videostream.asf -an -f image2pipe -preset ultrafast -tune zerolatency -s 320x240 pipe:1", // Hangs Arguments = "-i http://admin:ⓐ192.168.10.1/videostream.asf -vframes 1 -an -f image2pipe -preset ultrafast (...)
• 05:24
  FFMPEG build error : Permission Denied - Parikksit Bhisay Newest 'ffmpeg' Questions - Stack Overflow
  So I'm trying to build ffmpeg by following this exact guide: http://www.roman10.net/how-to-build-ffmpeg-with-ndk-r9/ This is my build_android.sh file: #!/bin/bash NDK=/android-ndk-r9d SYSROOT=$NDK/platforms/android-9/arch-arm/ TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/darwin-x86_64 function build_one ./configure \\ --prefix=$PREFIX \\ --enable-shared \\ --disable-static \\ --disable-doc \\ --disable-ffmpeg \\ --disable-ffplay \\ --disable-ffprobe \\ --disable-ffserver \\ --disable-avdevice \\ --disable-doc \\ --disable-symver \\ (...)
• 05:23
  Ffmpeg on idle python Mac - lllakkka Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to use FFMPEG on idle 3.7.4 python on macOS Catalina. I ran brew install ffmpeg and it successfully installed. However, when I go to IDLE and run my script (the script is to convert a .mp3 file to a .wav): from os import path from pydub import AudioSegment src = "transcript.mp3" dst = "test.wav" sound = AudioSegment.from_mp3(src) sound.export(dst, format="wav") This is what I get in return: Warning (from warnings module): File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pydub/utils.py", line 165 warn("Couldn't find ffmpeg or avconv - (...)