[FFmpeg-trac] #7940(undetermined:new): FFMETADATA fails to create a CTOC frame when adding chapters to MP3 files.

FFmpeg trac at avcodec.org
Tue Jun 4 18:19:19 EEST 2019


#7940: FFMETADATA fails to create a CTOC frame when adding chapters to MP3 files.
-------------------------------------+-------------------------------------
             Reporter:  yknivag      |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by yknivag):

 I can't provide the file here as the 2.5MB upload limit makes it
 impossible to upload any mp3 long enough for a demonstration of chapter
 functionality.  I have instead made available a folder on Google Drive
 (https://drive.google.com/drive/folders/1tkqpc0xeIrh1uwucn2tXAO1vx5o-
 ogEC?usp=sharing) containing:

 * The original mp3 file (no chapter metadata)
 * The desired metadata
 * The `ffmetadata` file (generated based on the documentation referred to
 in the original report)
 * The `ffmpeg` command and output
 * The mp3 file post processing with ffmpeg (containing the `CHAP` frames
 but no `CTOC`
 * An mp3 file containing also the `CTOC` frame, and
 * The python file used to add that `CTOC` frame.

 I hope this provides all the information required.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7940#comment:2>
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