#9901: Bug: ffmpeg/ffprobe calls field different from it's header.
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Reporter: NY2Da | Type: defect
Status: new | Priority: normal
Component: ffmpeg | Version: 4.4.1
Keywords: METADATA | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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- ffprobe calls Description field comment
Test Method-
1. Remove all tags from a file using MP3Tag.
2. create a "extended custom tag" called DESCRIPTION (Not a field already
in software so you can be sure what header it is) and enter some value.
3. Then check with ffbrobe.
Result-
mp3tag
https://preview.redd.it/30bl1thk1el91.png?width=642&format=png&auto=webp&s=e8fde094c28b0f0205a496b7b12b0d25ddd744a5
ffprobe
https://preview.redd.it/ul7a79jl1el91.png?width=467&format=png&auto=webp&s=1f94aacc7a97e8b81db4cdebc38122faab243324
- ffmpeg and ffprobe have different behaviors one calls the same field
comment the other DESCRIPTION -
experiment done by u/wierd (r/youtubedl mod)
r/youtubedl/comments/wxkpv8/comment/ilzy6ow -
i have a clean opus file, no metadata. i add metadata to it like this.
ffmpeg -i clean.251.opus -metadata 'description=this is a description'
-metadata 'comment=this is a comment' -metadata 'random=this is a random
field' -metadata 'synopsis=this is the synopsis field' new.opus
ffmpeg output:
Output #0, opus, to 'new.opus':
Metadata:
description : this is a description
comment : this is a comment <---
random : this is a random field
synopsis : this is the synopsis field
encoder : Lavf58.76.100
Stream #0:0(eng): Audio: opus, 48000 Hz, stereo, flt, 96 kb/s
Metadata:
encoder : Lavc58.134.100 libopus
DESCRIPTION : this is a comment <---
random : this is a random field
synopsis : this is the synopsis field
first part lists description, comment, random, synopsis. second partg
lists DESCRIPTION with the comment contents.
but... ffprobe:
Input #0, ogg, from 'new.opus':
Duration: 00:06:06.40, start: 0.000000, bitrate: 94 kb/s
Stream #0:0(eng): Audio: opus, 48000 Hz, stereo, fltp
Metadata:
encoder : Lavc58.134.100 libopus
comment : this is a comment <---
random : this is a random field
synopsis : this is the synopsis field
here it lists the comment as comment but description is not shown.
--------
Summary of the bug:
How to reproduce:
{{{
% ffmpeg -i input ... output
ffmpeg version
built on ...
}}}
Patches should be submitted to the ffmpeg-devel mailing list and not this
bug tracker.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/9901>
FFmpeg <https://ffmpeg.org>
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