#10652: Ogg VorbisComment should allow both COMMENT and DESCRIPTION fields
-------------------------------------+-------------------------------------
Reporter: | Type: defect
StefanBruens |
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug:
Although there are only 15 standard field names for metadata
(http://xiph.org/vorbis/doc/v-comment.html), there is nothing which
forbids e.g. COMMENT as a field name.
Notably https://wiki.xiph.org/Field_names links an Excel sheet with
several additional fields, including COMMENT.
https://wiki.xiph.org/VorbisComment also links to pages listing several
other common field names.
Unfortunately ffmpeg maps the COMMENT field to DESCRIPTION, although both
should be distinct:
https://github.com/FFmpeg/FFmpeg/blob/fa81de4af045317aefeae941cf54f349c39e81e0/libavformat/vorbiscomment.c#L37
How to reproduce:
{{{
% ffmpeg -i input.oga -acodec copy -metadata:s:a COMMENT=MyComment
output.oga
% ffprobe output.oga | grep MyComment
DESCRIPTION: MyComment
}}}
{{{
ffmpeg version 6.0 Copyright (c) 2000-2023 the FFmpeg developers
built with gcc 13 (SUSE Linux)
configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64
--incdir=/usr/include/ffmpeg --extra-cflags='-O2 -Wall -U_FORTIFY_SOURCE
-D_FORTIFY_SOURCE=3 -fstack-protector-strong -funwind-tables
-fasynchronous-unwind-tables -fstack-clash-protection -Werror=return-type
-flto=auto -ffat-lto-objects -g' --optflags='-O2 -Wall -U_FORTIFY_SOURCE
-D_FORTIFY_SOURCE=3 -fstack-protector-strong -funwind-tables
-fasynchronous-unwind-tables -fstack-clash-protection -Werror=return-type
-flto=auto -ffat-lto-objects -g' --disable-htmlpages --enable-pic
--disable-stripping --enable-shared --disable-static --enable-gpl
--enable-version3 --disable-openssl --enable-gnutls --enable-ladspa
--enable-libshaderc --enable-vulkan --enable-libplacebo --enable-libaom
--enable-libass --enable-libbluray --enable-libbs2b --enable-libcdio
--enable-libcodec2 --enable-libdav1d --enable-libdc1394 --enable-libdrm
--enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-
libgsm --enable-libjack --enable-libjxl --enable-librist --enable-
libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt
--enable-libopenh264-dlopen --enable-libopus --enable-libpulse --enable-
librav1e --enable-librubberband --enable-libsvtav1 --enable-libsoxr
--enable-libspeex --enable-libssh --enable-libsrt --enable-libtheora
--enable-libtwolame --enable-libvidstab --enable-libvmaf --enable-
libvorbis --enable-libvpx --enable-libwebp --enable-libxml2 --enable-
libzimg --enable-libzmq --enable-libzvbi --enable-lto --enable-lv2
--enable-libmfx --enable-vaapi --enable-vdpau --enable-version3 --enable-
libfdk-aac-dlopen --enable-nonfree --enable-libvo-amrwbenc --enable-
libx264 --enable-libx265 --enable-libxvid
libavutil 58. 2.100 / 58. 2.100
libavcodec 60. 3.100 / 60. 3.100
libavformat 60. 3.100 / 60. 3.100
libavdevice 60. 1.100 / 60. 1.100
libavfilter 9. 3.100 / 9. 3.100
libswscale 7. 1.100 / 7. 1.100
libswresample 4. 10.100 / 4. 10.100
libpostproc 57. 1.100 / 57. 1.100
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/10652>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker_______________________________________________
FFmpeg-trac mailing list
FFmpeg-trac@avcodec.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-trac
To unsubscribe, visit link above, or email
ffmpeg-trac-requ...@ffmpeg.org with subject "unsubscribe".
