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ffmpeg Documentation

    https://ffmpeg.org/ffmpeg.html#:~:text=Stream%20copy%20is%20a%20mode%20selected%20by%20supplying,changing%20the%20container%20format%20or%20modifying%20container-level%20metadata.
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Ffmpeg to duplicate an audio stream and encode this …

    https://stackoverflow.com/questions/21567029/ffmpeg-to-duplicate-an-audio-stream-and-encode-this-new-stream
    This command will take a video with 1 audio stream, and downmix to stereo and convert the audio stream and add it as a 2nd audio stream. It will be in AAC 384k. ffmpeg -i INPUT.mkv -strict -2 -map 0 -c copy -map 0:a:0 -c:a:1 aac -b:a 384k -ac 2 OUTPUT.mkv. Explanation of the command. ffmpeg -i INPUT.mkv The application and input file-strict -2 …

ffmpeg Documentation

    https://ffmpeg.org/ffmpeg.html
    3.2 Stream copy. Stream copy is a mode selected by supplying the copy parameter to the -codec option. It makes ffmpeg omit the decoding and encoding step for the specified stream, so it does only demuxing and muxing. It is useful for changing the container format or modifying container-level metadata.

How to Extract Audio from Video Using FFmpeg

    https://www.leawo.org/entips/how-to-extract-audio-from-video-using-ffmpeg-1400.html
    From other questions about this topic I learned that ffmpeg is a right tool to do this. I tried to use the following command: ‘ffmpeg -i video.mp4 -acodec copy -ss 00:30:00 -to 00:60:00 extract.mp3’. But it fails and says ‘[mp3 @ 0x3bfade0] Invalid audio stream. Exactly one MP3 audio stream is required.

How to use filtering and stream copy together with …

    https://stackoverflow.com/questions/53518589/how-to-use-filtering-and-stream-copy-together-with-ffmpeg
    So it is not possible to filter and stream copy the same stream at the same time. However, you can stream copy unfiltered streams while filtering others. Example to filter video and stream copy audio: ffmpeg -i input -filter_complex "[0:v]scale=iw/2:-1[v]" -map "[v]" -map 0:a -c:a copy output See the ffmpeg documentation for more info.

FFmpeg: Extract Audio From Video In Original Format Or ...

    https://www.linuxuprising.com/2019/11/ffmpeg-extract-audio-from-video-in.html
    ffmpeg -i myvideo.mp4 -vn -acodec copy audio.ogg Replace myvideo.mp4 with the video filename/path, and audio.ogg with the name you want to use for the audio output filename, and the extension. In this command, -i is used to specify the path and filename of the input video, -vn skips the inclusion of the video stream, while -acodec copy is for copying the original audio …

Extract audio using FFmpeg - Aavtech

    https://aavtech.site/2019/06/extract-audio-using-ffmpeg/
    Here is the command for extracting audio from a video file. ffmpeg -i input.mp4 -vn -acodec copy audio.aac. The input file name and the extension will have to be changed as required, the rest of the command can stay the same. The above command will …

direct stream copy not with ffmpeg - VideoHelp Forum

    https://forum.videohelp.com/threads/360492-direct-stream-copy-not-with-ffmpeg
    I can not use ffmpeg or mencoder. Not possible . Vdub cannot open mxf natively. The import plugins in order for vdub to open mxf decode/decompress the video , so it's no longer mpeg2 video (stream copy of original is not possible) There might be a way with graphedit/graphstudio using a directshow mux , not sure. Quote.

conversion - FFMPEG convert video with multiple audio ...

    https://video.stackexchange.com/questions/12051/ffmpeg-convert-video-with-multiple-audio-streams
    -c:a -> select best supported audio (transcoded) -c:a copy -> best supported audio (copied) -map 0:a -> all audio from 1st input file (transcoded) -map 0:0 -> 1st stream from 1st input file (transcoded) -map 1:a:0 -> 1st audio stream from 2nd input file (transcoded) -map 1:a:1 -c:a copy -> 2nd audio stream from 2nd input file (copied)

VirtualDub2 / Wiki / direct_copy - SourceForge

    https://sourceforge.net/p/vdfiltermod/wiki/direct_copy/
    Audio is saved as PCM in direct copy mode. A1: Switch to full mode and select audio compression. A2: Use appropriate input driver for audio (there is option in File->Open dialog and Audio->From other source). Save video fails with message "Direct stream copy cannot be used with this video stream." A1: Use appropriate input driver if one exists. A2: Switch to full mode …

1st video stream, 2nd audio stream, all subtitles

    https://unix.stackexchange.com/questions/245937/re-encoding-video-with-ffmpeg-including-all-subtitles-but-not-all-audio
    These examples use -c copy to stream copy (re-mux) from the input to to the output. No re-encoding occurs. Stream copy all streams ffmpeg -i input -map 0 -c copy output 1st video stream, 2nd audio stream, all subtitles ffmpeg -i input -map 0:v:0 -map 0:a:1 -map 0:s -c copy output 3rd video stream, all audio streams, no subtitles

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