[FFmpeg-trac] #5332(undetermined:new): 24bit FLACs muxed in mkv marked as 32bit resulting in no audio on Windows 10

[FFmpeg]

#5332: 24bit FLACs muxed in mkv marked as 32bit resulting in no audio on Windows
10
-------------------------------------+-------------------------------------
             Reporter:  hdvdeo       |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug: 24bit FLACs muxed in mkv marked as 32bit resulting in
 no audio on Windows 10
 How to reproduce:
 1. Take H264/HEVC based video file with 1 5.1 audio track in mkv container
 2. try to use ffmpeg as stated below to convert audio track to flac 5.1
 also to mkv container
 3. resulting file will be converted ok, however mkv header will contain
 information that audio bit depth is 32 bit, in reality it will be 24 bits
 and even ffprobe shows that.
 4. as a consequence try to open file in Movies&TV or Media Player
 applications that come with Windows.
 files are playing without audio
 5. if you correct header information to 24 bits mkv file plays without
 problem.
 {{{
 ffmpeg -report -v 9 -loglevel 99 -i "d:\\temp\\HEVC-FLAC51.mkv" -c:v copy
 -c:a flac "d:\\temp\\sample.mkv"
 ffmpeg version N-78949-g6f5048f Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 5.3.0 (GCC)
 }}}

 You can find original and resulting file here: [http://1drv.ms/1YJY0Jm]
 Log file attached

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5332>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker