[FFmpeg-trac] #4492(avcodec:new): dca parser fails for DTS-MA

[FFmpeg]

#4492: dca parser fails for DTS-MA
--------------------------------------+---------------------------------
               Reporter:  cehoyos     |                  Owner:
                   Type:  defect      |                 Status:  new
               Priority:  normal      |              Component:  avcodec
                Version:  git-master  |               Keywords:  dca
             Blocked By:              |               Blocking:
Reproduced by developer:  0           |  Analyzed by developer:  0
--------------------------------------+---------------------------------
 A user uploaded a DTS-MA sample for which the parser fails:
 {{{
 $ ffmpeg -i LFEScaleIndex-larger-than-127-is-not-implemented-
 example_cut.dts -f null -
 ffmpeg version N-71497-gedbb9b5 Copyright (c) 2000-2015 the FFmpeg
 developers
   built with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl
   libavutil      54. 22.101 / 54. 22.101
   libavcodec     56. 34.100 / 56. 34.100
   libavformat    56. 30.100 / 56. 30.100
   libavdevice    56.  4.100 / 56.  4.100
   libavfilter     5. 14.100 /  5. 14.100
   libswscale      3.  1.101 /  3.  1.101
   libswresample   1.  1.100 /  1.  1.100
   libpostproc    53.  3.100 / 53.  3.100
 Input #0, dts, from 'LFEScaleIndex-larger-than-127-is-not-implemented-
 example_cut.dts':
   Duration: N/A, start: 0.000000, bitrate: N/A
     Stream #0:0: Audio: dts (DTS-HD MA), 48000 Hz, 5.1(side), fltp
 Output #0, null, to 'pipe:':
   Metadata:
     encoder         : Lavf56.30.100
     Stream #0:0: Audio: pcm_s16le, 48000 Hz, 5.1(side), s16, 4608 kb/s
     Metadata:
       encoder         : Lavc56.34.100 pcm_s16le
 Stream mapping:
   Stream #0:0 -> #0:0 (dts (dca) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 [dca @ 0x36a9ca0] LFEScaleIndex larger than 127 is not implemented. Update
 your FFmpeg version to the newest one from Git. If the problem still
 occurs, it means that your file has a feature which has not been
 implemented.
 [dca @ 0x36a9ca0] If you want to help, upload a sample of this file to
 ftp://upload.ffmpeg.org/incoming/ and contact the ffmpeg-devel mailing
 list. (ffmpeg-devel at ffmpeg.org)
 [dca @ 0x36a9ca0] error decoding block
 Error while decoding stream #0:0: Invalid data found when processing input
 size=N/A time=00:00:00.29 bitrate=N/A
 video:0kB audio:48kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: unknown
 }}}
 The first frame of the file has size 5192 bytes which the parser correctly
 reports, the second and third frame should be 5176 and 5220 bytes, the
 parser instead reports 4308 and 6088. Decoding fails for the third frame
 (the one with the incorrect start position).

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Ticket URL: <https://trac.ffmpeg.org/ticket/4492>
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