[FFmpeg-trac] #11660(ffmpeg:new): Importing ffmetadata file into MP4 supports chapters but ignores global tags

[FFmpeg]

#11660: Importing ffmetadata file into MP4 supports chapters but ignores global
tags
------------------------------------+--------------------------------------
             Reporter:  LigH        |                     Type:  defect
               Status:  new         |                 Priority:  normal
            Component:  ffmpeg      |                  Version:  git-master
             Keywords:  ffmetadata  |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
------------------------------------+--------------------------------------
 Summary of the bug:

 I can add an ffmetadata file to an MP4 file to include movie chapters. But
 global tags for the whole movie, like title and comment, in the same file
 are not added.

 How to reproduce:

 (Windows 10 64bit)
 > qaac64 -V 64 -q 1 -o PAL.m4a PAL.avs
 > x264 --crf 25 --preset slow --nr 500 --colormatrix bt709 --transfer
 bt709 --colorprim bt709 --qpfile PAL.qp -o PAL.v.mp4 PAL.avs
 > ren PAL.v.mp4 PAL.m4v
 > ffmpeg -i PAL.m4v -i PAL.m4a -i PAL.ffmetadata -map_metadata 1 -c:v copy
 -c:a copy -movflags +faststart PAL.mp4

 Chapters are read from the file PAL.ffmetadata, successfully inserted in
 the MP4 file, media players can handle the chapters (the "Menu" entry is
 reported even **twice** - is that necessary at all?), but global tags
 "title" and "comment" in the same file are ignored.

 Sample files and some console outputs (analysis logs by "MediaInfo -f" and
 "MP4Box -infox") are attached in a ZIP archive.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/11660>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker