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I was looking for saving custom data into movie file using ffmpeg mainly actual start frame, end frame, and other few information something like key:value pair, so later on I can fetch the details from movie file on the go.

I looked all over but couldn't figure out myself. Is there anyway to do that?

Nathan.Eilisha Shiraini
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Mahendra
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2 Answers2

7

You don't mention which container format you want this facility for, since some don't allow custom tags.

FFmpeg's Matroska muxer allows random tags, so

ffmpeg -i input -c copy
       -metadata key1=value1
       -metadata:s:v key2=value2
       -metadata:s:a:0 key3=value3
out.mkv

The first metadata options set a global value, the 2nd is applied to all video streams, and the third to the 1st audio stream only.

Mediainfo and ffprobe can show these values.

Gyan
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got it.. after doing some digging on same line -metadata found this amazing post - https://jmesb.com/how_to/create_id3_tags_using_ffmpeg this will do any format I believe.

ffmpeg supports few tags which can be manipulated like title, comments, artists, album, track

ffmpeg32 -i out.mov-metadata publisher="Publishers Info" -metadata artist="my metadata" -metadata album="another data" -metadata TIT3="more data" out2.mov

this way I could able to add custom data into metadata, though TIT3 is for subtitles, we at work never use it, so I could able to hack through this attribute.

Community
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Mahendra
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