[FFmpeg-trac] #6005(avcodec:new): ffv1enc: Encoding >5K content fails with "Invalid minimum required packet size"

[FFmpeg]

#6005: ffv1enc: Encoding >5K content fails with "Invalid minimum required packet
size"
---------------------------------+---------------------------------------
             Reporter:  Fog      |                     Type:  defect
               Status:  new      |                 Priority:  normal
            Component:  avcodec  |                  Version:  unspecified
             Keywords:           |               Blocked By:
             Blocking:           |  Reproduced by developer:  0
Analyzed by developer:  0        |
---------------------------------+---------------------------------------
 Summary of the bug:
 If a input resolution greater than 5K (5120 × 2880) is passed through
 ffmpeg to encode with FFV1, it will fail encoding with "Invalid minimum
 required packet size". For this example, I will use 5632x3168 as the
 resolution. When that resolution is passed, it will create a maxsize value
 of 2640658432 (5632 * 3168 * 37 * 4 + 16384) and then passes that value
 directly to ff_alloc_packet2, without finding out the actual size of the
 packet. ff_alloc_packet2 then fails the check for the maximum packet size
 of MAX_INT - 32 because it's checking the maximum size allowed by the
 resolution instead of the actual size.

 Here is how to re-produce the issue and the output provided:
 {{{
 % ffmpeg -f lavfi -i testsrc=size=5632x3168 -pix_fmt yuv420p -t 60 -vcodec
 ffv1 test.avi
 ffmpeg version N-82794-g3ab1311 Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 5.4.0 (GCC)
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-
 bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv
 --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca
 --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc
 --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb
 --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg
 --enable-libopus --enable-librtmp --enable-libschroedinger --enable-
 libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-
 libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis
 --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264
 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg
 --enable-lzma --enable-decklink --enable-zlib
   libavutil      55. 42.100 / 55. 42.100
   libavcodec     57. 67.100 / 57. 67.100
   libavformat    57. 58.102 / 57. 58.102
   libavdevice    57.  2.100 / 57.  2.100
   libavfilter     6. 68.100 /  6. 68.100
   libswscale      4.  3.101 /  4.  3.101
   libswresample   2.  4.100 /  2.  4.100
   libpostproc    54.  2.100 / 54.  2.100
 Input #0, lavfi, from 'testsrc=size=5632x3168':
   Duration: N/A, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 5632x3168
 [SAR 1:1 DAR 16:9], 25 tbr, 25 tbn, 25 tbc
 File 'test.avi' already exists. Overwrite ? [y/N] y
 Output #0, avi, to 'test.avi':
   Metadata:
     ISFT            : Lavf57.58.102
     Stream #0:0: Video: ffv1 (FFV1 / 0x31564646), yuv420p, 5632x3168 [SAR
 1:1 DAR 16:9], q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc
     Metadata:
       encoder         : Lavc57.67.100 ffv1
 Stream mapping:
   Stream #0:0 -> #0:0 (rawvideo (native) -> ffv1 (native))
 Press [q] to stop, [?] for help
 [ffv1 @ 00000000024a5840] Invalid minimum required packet size 2640658432
 (max allowed is 2147483615)
 Video encoding failed
 Conversion failed!
 }}}
 Patches should be submitted to the ffmpeg-devel mailing list and not this
 bug tracker.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6005>
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