[FFmpeg-trac] #10518(undetermined:new): crop corrupts pngs when the crop is close to the right and lower edges

[FFmpeg]

#10518: crop corrupts pngs when the crop is close to the right and lower edges
-------------------------------------+-------------------------------------
             Reporter:  wesnet12345  |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  6.0          |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Comment (by Michael Koch):

 The output image has a column of black pixels at the right. Can be
 reproduced as follows:

 {{{
 C:\Users\astro\Desktop\LUT1D>ffmpeg -i test_48_frames_only.mov -vf
 crop=w=20:h=20:x=1260:y=0 -frames 1 -y out.png
 ffmpeg version 2023-08-10-git-d9d5695390-essentials_build-www.gyan.dev
 Copyright (c) 2000-2023 the FFmpeg developers
   built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
   configuration: --enable-gpl --enable-version3 --enable-static --disable-
 w32threads --disable-autodetect --enable-fontconfig --enable-iconv
 --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma
 --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-
 avisynth --enable-sdl2 --enable-libwebp --enable-libx264 --enable-libx265
 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx
 --enable-mediafoundation --enable-libass --enable-libfreetype --enable-
 libfribidi --enable-libharfbuzz --enable-libvidstab --enable-libvmaf
 --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-
 ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2
 --enable-libvpl --enable-libgme --enable-libopenmpt --enable-libopencore-
 amrwb --enable-libmp3lame --enable-libtheora --enable-libvo-amrwbenc
 --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-
 libspeex --enable-libvorbis --enable-librubberband
   libavutil      58. 16.101 / 58. 16.101
   libavcodec     60. 23.100 / 60. 23.100
   libavformat    60. 10.100 / 60. 10.100
   libavdevice    60.  2.101 / 60.  2.101
   libavfilter     9. 10.100 /  9. 10.100
   libswscale      7.  3.100 /  7.  3.100
   libswresample   4. 11.100 /  4. 11.100
   libpostproc    57.  2.100 / 57.  2.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test_48_frames_only.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 537199360
     compatible_brands: qt
     creation_time   : 2023-08-06T20:11:33.000000Z
   Duration: 00:00:01.60, start: 0.000000, bitrate: 10247 kb/s
   Stream #0:0[0x1](eng): Video: prores (Standard) (apcn / 0x6E637061),
 yuv422p10le(bt709, progressive), 1280x720, 5004 kb/s, SAR 1:1 DAR 16:9, 30
 fps, 30 tbr, 30 tbn (default)
     Metadata:
       creation_time   : 2023-08-06T20:11:33.000000Z
       handler_name    : Apple Video Media Handler
       vendor_id       : appl
       encoder         : Apple ProRes 422
       timecode        : 00:00:00:00
   Stream #0:1[0x2](eng): Data: none (tmcd / 0x64636D74), 0 kb/s (default)
     Metadata:
       creation_time   : 2023-08-06T20:11:33.000000Z
       handler_name    : Time Code Media Handler
       timecode        : 00:00:00:00
 Stream mapping:
   Stream #0:0 -> #0:0 (prores (native) -> png (native))
 Press [q] to stop, [?] for help
 Output #0, image2, to 'out.png':
   Metadata:
     major_brand     : qt
     minor_version   : 537199360
     compatible_brands: qt
     encoder         : Lavf60.10.100
   Stream #0:0(eng): Video: png, rgb48be(pc, gbr/bt709/bt709, progressive),
 20x20 [SAR 1:1 DAR 1:1], q=2-31, 200 kb/s, 30 fps, 30 tbn (default)
     Metadata:
       creation_time   : 2023-08-06T20:11:33.000000Z
       handler_name    : Apple Video Media Handler
       vendor_id       : appl
       timecode        : 00:00:00:00
       encoder         : Lavc60.23.100 png
 [image2 @ 00000254acc00c40] The specified filename 'out.png' does not
 contain an image sequence pattern or a pattern is invalid.
 [image2 @ 00000254acc00c40] Use a pattern such as %03d for an image
 sequence or use the -update option (with -frames:v 1 if needed) to write a
 single image.
 [out#0/image2 @ 00000254acc00b40] video:0kB audio:0kB subtitle:0kB other
 streams:0kB global headers:0kB muxing overhead: unknown
 frame=    1 fps=0.0 q=-0.0 Lsize=N/A time=00:00:00.00 bitrate=N/A speed=
 0x
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10518#comment:2>
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