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Ffmpeg copy mp4 track 2 audio to mp4 track 1
Ffmpeg copy mp4 track 2 audio to mp4 track 1












-c copy – will just copy the streams without re-encoding.mkv - c copy - map 0 : v : 0 - map 0 : a : 1 - map 0 : a : 0 output.

ffmpeg copy mp4 track 2 audio to mp4 track 1

To do that we can use the following command:įfmpeg - i input.

  • Stream 2: audio stream, German language.
  • Stream 1: audio stream, English language, default stream.
  • In the above example file we only have one input file, and therefore the first number will always be 0. The second number y represents the stream within the input file. The first number x represents the number of the input file. Note on the enumartion ‘#x:y’: Counting starts with 0. If you defined English as your preferred audio language in your video player, with this example file the player would play the German language nevertheless.
  • Stream 2: audio stream, English languageĪ forced audio stream will override the settings in your video player.
  • Stream 1: audio stream, German language, set as default audio stream, forced audio stream.
  • The multimedia file contains three streams (see highlighted lines in yellow): In this example you can see the following. _STATISTICS_TAGS - eng : BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES

    ffmpeg copy mp4 track 2 audio to mp4 track 1

    _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES

    ffmpeg copy mp4 track 2 audio to mp4 track 1

    _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES _STATISTICS_WRITING_APP-eng: mkvmerge v8.0.0 64bit _STATISTICS_WRITING_APP: mkvmerge v8.0.0 64bit














    Ffmpeg copy mp4 track 2 audio to mp4 track 1