Opened 6 years ago

Closed 5 years ago

Last modified 4 years ago

#30 closed defect (fixed)

av_metadata_get does not get embeded meta data

Reported by: chinshou Owned by: baptiste
Priority: normal Component: avformat
Version: Keywords: mov metadata
Cc: Blocked By:
Blocking: Reproduced by developer: yes
Analyzed by developer: no


ffmepg binary was downloaded from

executed ffmpeg -i 1.flv -f mp4 -metadata lyrics="abc" 1.mp4 to embed lyrics meta data to mp4 container format video file

from, it seems lyrics metadata was supported by mp4 container.

but after conversion ,
execute ffmpeg -i 1.mp4 lyrics metadata was not displayed .

use a hex editor to edit the mp4 file , I can find "abc" text was appended at the end of mp4 file.

But it seems av_metadata_get did not read the lyrics metadata correctly. some other metadata seems ok for example title meta tag.

ffmpeg -i 1.flv -f mp4 -metadata title="abc" 1.mp4

Change History (3)

comment:1 Changed 6 years ago by michael

  • Component changed from FFmpeg to avformat
  • Keywords mp4 muxer metadata added
  • Owner changed from michael to baptiste
  • Reproduced by developer set
  • Status changed from new to open

The mp4 muxer does not store the metadata, it seems.

comment:2 Changed 5 years ago by reimar

  • Resolution set to fixed
  • Status changed from open to closed

A handful of tags, among them lyrics, were written by the muxer but not read by the demuxer.
This is fixed 543f3db.

comment:3 Changed 4 years ago by cehoyos

  • Keywords mov added; mp4 muxer removed
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