[FFmpeg-trac] #30(FFmpeg:new): av_metadata_get does not get embeded meta data

FFmpeg trac at avcodec.org
Wed Mar 30 13:48:34 CEST 2011

#30: av_metadata_get does not get embeded meta data
  Reporter:  chinshou  |      Owner:  michael
      Type:  defect    |     Status:  new
  Priority:  normal    |  Component:  FFmpeg
   Version:            |   Keywords:
Blocked By:            |   Blocking:
Reproduced:  0         |   Analyzed:  0
 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  http://wiki.multimedia.cx/index.php?title=FFmpeg_Metadata, 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

Ticket URL: <http://avcodec.org/trac/ffmpeg/ticket/30>
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