[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 15:15:36 EEST 2019
#7940: FFMETADATA fails to create a CTOC frame when adding chapters to MP3 files.
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Reporter: yknivag | Type: defect
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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* What you were trying to accomplish?
* Trying to add chapters to an MP3 file using `FFMETADATA`.
* The problem you encountered?
* The id3v2.3 metadata written was incomplete. `CHAP` frames were
correctly created for every `[CHAPTER]` section in the `FFMETADATA` file,
but no `CTOC` frame was created.
* Without the `CTOC` frame the chapters are un-navigable in a wide
variety of podcasting software. Furthermore the id3 standard requires
`CTOC` to be added wherever `CHAP` frames are present.
* The exact command line you were using?
* I used the command and file structure from the official documentation
here - https://www.ffmpeg.org/ffmpeg-formats.html#Metadata-1
* Version of ffmpeg used?
* ffmpeg version 3.4.6-0ubuntu0.18.04.1
* Comment
* This method of adding both standard metadata and chapters using a
simple `FFMETADATA` file is to be commended for it's simplicity but it's
failure to add a `CTOC` frame means it is fundamentally flawed. Either
the functionality to add chapters should work (ie follow the ID3 standard)
or it should not be present in non-beta versions.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/7940>
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