The fastest and best ffmpeg-based method I have figured out is: ffmpeg -ss 00:01:00 -to 00:02:00 -i input.mp4 -c copy output.mp4 This command trims your video in seconds! Explanation of the command: Command Explanation -i This specifies the input file. In that case, it is (input.mp4). -ss Used with -i, this seeks in the input … Read more
I think ffmpeg should be used to play audio and SDL for video in this case. After opening the file with OpenCV and processing the frame, you can use OpenCV -> SDL to display it while retrieving the audio frames through ffmpeg and playing them with SDL. Here is a nice collection of ffmpeg/SDL tutorials! … Read more
The overlay order is controlled by the order of the inputs, from the ffmpeg docs […] takes two inputs and one output, the first input is the “main” video on which the second input is overlayed. You second command thus becomes: ffmpeg -y -loop 1 -qscale 1 -r 1 -b 9600 -i frame_%d.png -vf “movie=bg.png … Read more
ffmpeg -i in.m3u8 -acodec copy -vcodec copy out.mp4 For AAC audio you will also need to add the the bit ststream filter. (Thanks @aergistal for pointing that out) ffmpeg -i in.m3u8 -acodec copy -bsf:a aac_adtstoasc -vcodec copy out.mp4
After reading the link you provided I noticed that we can also provide an mjpeg. Depending on what your test requirements – this may be sufficient for you. As a terminal command with ffmpeg installed: ffmpeg -i oldfile.mp4 newfile.mjpeg then I tested by running Google Chrome from the terminal using: google-chrome –use-fake-device-for-media-stream –use-file-for-fake-video-capture=newfile.mjpeg After navigating … Read more
I found pydub to be easiest tool to do this kind of audio manipulation in simple ways and with compact code. You can install pydub with pip install pydub You may need to install ffmpeg/avlib if needed. See this link for more details. Here is a snippet that does what you asked. Some of the … Read more
youtube-dl already contains this functionality – just specify that you want mp3: youtube-dl -x –audio-format mp3 https://www.youtube.com/watch?v=BaW_jenozKc Replace https://www.youtube.com/watch?v=BaW_jenozKc with your actual URL.
Strip metadata tags and remove album cover image ffmpeg -i input.mp3 -map 0:a -c:a copy -map_metadata -1 output.mp3 -map 0:a Includes only audio (omits all images). See FFmpeg Wiki: Map for more details. -c:a copy Enables stream copy mode so re-encoding is avoided. -map_metadata -1 Omits all metadata.