[FFmpeg-trac] #10259(avcodec:new): Some Scanity 10-bit monochrome DPX are rejected

[FFmpeg]

#10259: Some Scanity 10-bit monochrome DPX are rejected
-------------------------------------+-------------------------------------
             Reporter:  Jérôme       |                     Type:  defect
  Martinez                           |
               Status:  new          |                 Priority:  normal
            Component:  avcodec      |                  Version:  git-
                                     |  master
             Keywords:  dpx scanity  |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 The DPX related code has a check which does not compute correctly the
 minimum file size in case of (out ouf specs) Scanity 10-bit monochrome
 DPX.

 {{{
 ./ffmpeg -i y10bit_scanity_realsize_zeroed.dpx a%06d.png
 ffmpeg version N-110014-ga6e9d01f88 Copyright (c) 2000-2023 the FFmpeg
 developers
   built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)
   configuration:
   libavutil      58.  3.100 / 58.  3.100
   libavcodec     60.  6.101 / 60.  6.101
   libavformat    60.  4.100 / 60.  4.100
   libavdevice    60.  2.100 / 60.  2.100
   libavfilter     9.  4.100 /  9.  4.100
   libswscale      7.  2.100 /  7.  2.100
   libswresample   4. 11.100 /  4. 11.100
 [dpx @ 0x7fffce94ce80] Cannot map DPX color specification 1 to colorspace.
 [dpx @ 0x7fffce94ce80] Overread buffer. Invalid header?
 [dpx_pipe @ 0x7fffce94b5c0] Could not find codec parameters for stream 0
 (Video: dpx, none, 2150x1820 [SAR 1:1 DAR 215:182]): unspecified pixel
 format
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 Input #0, dpx_pipe, from 'y10bit_scanity_realsize_zeroed.dpx':
   Duration: N/A, bitrate: N/A
   Stream #0:0: Video: dpx, none, 2150x1820 [SAR 1:1 DAR 215:182], 25 fps,
 25 tbr, 25 tbn
 Stream mapping:
   Stream #0:0 -> #0:0 (dpx (native) -> png (native))
 Press [q] to stop, [?] for help
 [dpx @ 0x7fffce952500] Cannot map DPX color specification 1 to colorspace.
 [dpx @ 0x7fffce952500] Overread buffer. Invalid header?
 Error while decoding stream #0:0: Invalid data found when processing input
 Cannot determine format of input stream 0:0 after EOF
 Error marking filters as finished
 Conversion failed!

 ls -l y10bit_scanity_realsize_zeroed.dpx
 -rwxrwxrwx 1 jerome jerome 5283840 Mar 14 10:58
 y10bit_scanity_realsize_zeroed.dpx
 }}}

 zeroed file attached (the file size is the one from the hardware, not
 modified).
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10259>
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