TOOL » FFMPEG

Metadata

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Reference:stackoverflow.com

Clear metadata ​

Use -map_metadata (default global) with value of -1:

shell
ffmpeg -i input.mp4 -map_metadata -1 output.mp4
ffmpeg -i input.mp4 -map_metadata:s -1 output.mp4

Audio metadata ​

For each KEY=VALUE pair, use -metadata to set it (without options it defaults to global metadata). You can also set metadata for a specific stream:

  • -metadata:g: Global metadata
  • -metadata:s:0: First stream metadata
shell
ffmpeg -i without_metadata.opus \
  -codec copy \
  -metadata:s:0 title='My title' \
  -metadata:s:0 artist='Artist Name' \
  -metadata:s:0 album_artist='Album Image Creator' \
  -metadata:s:0 album='Album Name' \
  -metadata:s:0 date=2023 \
  -metadata:s:0 track=1 \
  -metadata:s:0 disc=1 \
  -metadata:s:0 composer='Composer Name' \
  with_metadata.opus

Video metadata ​

If a video has, for example, two audio streams, you may want to add a language and a title to be shown in players.

shell
ffmpeg -i without_metadata.mp3 \
  -metadata:g title='Video Title' \
  -metadata:g creation_time='2023-08-06 10:00:00' \
  -metadata:s:1 language=jpn -metadata:s:1 title='First Audio Title' \
  -metadata:s:2 language=mul -metadata:s:2 title='Second Audio Title' \
  with_metadata.mkv

Cover ​

MP3 ​

Use -codec copy to copy both audio and image as is.

shell
ffmpeg -i music.mp3 -i Cover.jpg \
  -metadata:s:1 comment='Cover (front)' \
  -codec copy -map 0 -map 1 \
  music_with_cover.mp3

Opus ​

Use -acodec copy to copy audio as is. Image needs a different codec, so use -vcodec theora -q:v 10.

Note: Most music players cannot recognize this cover art.

shell
ffmpeg -i music.opus -i Cover.jpg \
  -metadata:s:1 comment='Cover (front)' \
  -acodec copy -vcodec theora -q:v 10 -map 0 -map 1 \
  music_with_cover.opus