[FFmpeg-trac] #9993(ffmpeg:new): alac_at only converts 16 bit sample

[FFmpeg]

#9993: alac_at only converts 16 bit sample
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             Reporter:  mertozan  |                     Type:  defect
               Status:  new       |                 Priority:  important
            Component:  ffmpeg    |                  Version:  git-master
             Keywords:            |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
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 I'm converting 24-bit DTS file to alac but always converts 16 bit per
 samples. I also trying "-sample_fmt s32p" not working.
 Log file is here:

 {{{
 ./ffmpeg -i 5min.mkv -map 0:1 -c:a alac_at 5min.m4a
 ffmpeg version N-108816-g874a6f2090-tessus  https://evermeet.cx/ffmpeg/
 Copyright (c) 2000-2022 the FFmpeg developers
   built with Apple clang version 11.0.0 (clang-1100.0.33.17)
   configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-
 version=tessus --enable-avisynth --enable-fontconfig --enable-gpl
 --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d
 --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-
 libmp3lame --enable-libmysofa --enable-libopencore-amrnb --enable-
 libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-
 libopus --enable-librubberband --enable-libshine --enable-libsnappy
 --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame
 --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-
 libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-
 libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-libzmq
 --enable-libzvbi --enable-version3 --pkg-config-flags=--static --disable-
 ffplay
   libavutil      57. 39.101 / 57. 39.101
   libavcodec     59. 51.100 / 59. 51.100
   libavformat    59. 34.101 / 59. 34.101
   libavdevice    59.  8.101 / 59.  8.101
   libavfilter     8. 49.101 /  8. 49.101
   libswscale      6.  8.112 /  6.  8.112
   libswresample   4.  9.100 /  4.  9.100
   libpostproc    56.  7.100 / 56.  7.100
 [matroska,webm @ 0x7fdc71c11880] Could not find codec parameters for
 stream 0 (Video: h264, none(tv, bt709, progressive), 1920x1080):
 unspecified pixel format
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 Input #0, matroska,webm, from '5min.mkv':
   Metadata:
     title           : The Dark Knight Rises 2012 IMAX BluRay 1080p DTS AC3
 x264-MgB
     ENCODER         : Lavf59.16.100
   Duration: 00:05:00.10, start: 0.005000, bitrate: 8997 kb/s
   Chapters:
     Chapter #0:0: start 0.000000, end 300.000000
       Metadata:
         title           : Chapter 1
   Stream #0:0(eng): Video: h264, none(tv, bt709, progressive), 1920x1080,
 SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 1k tbn (default)
     Metadata:
       title           : The Dark Knight Rises 2012 IMAX BluRay 1080p By
 MgB
       DURATION        : 00:05:00.096000000
   Stream #0:1(eng): Audio: dts (DTS), 48000 Hz, 5.1(side), fltp, 1536 kb/s
 (default)
     Metadata:
       title           : DTS 5.1 @ 1509 Kbps
       DURATION        : 00:05:00.004000000
 Stream mapping:
   Stream #0:1 -> #0:0 (dts (dca) -> alac (alac_at))
 Press [q] to stop, [?] for help
 Output #0, ipod, to '5min.m4a':
   Metadata:
     title           : The Dark Knight Rises 2012 IMAX BluRay 1080p DTS AC3
 x264-MgB
     encoder         : Lavf59.34.101
   Chapters:
     Chapter #0:0: start 0.000000, end 299.995000
       Metadata:
         title           : Chapter 1
   Stream #0:0(eng): Audio: alac (alac / 0x63616C61), 48000 Hz, 5.1(side),
 s16, 128 kb/s (default)
     Metadata:
       title           : DTS 5.1 @ 1509 Kbps
       DURATION        : 00:05:00.004000000
       encoder         : Lavc59.51.100 alac_at
 size=   67772kB time=00:04:59.94 bitrate=1851.0kbits/s speed=38.8x
 video:0kB audio:67737kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.052030%
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9993>
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