[FFmpeg-trac] #10256(undetermined:new): ffmpeg incorrectly classifies .yuv input format as "gsm"

[FFmpeg]

#10256: ffmpeg incorrectly classifies .yuv input format as "gsm"
-------------------------------------+-------------------------------------
             Reporter:  Martin       |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:  gsm          |               Blocked By:
  rawvideo yuv .yuv                  |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:

 Input a raw 4:2:0 .yuv, attempting to pad black pixels
 ffmpeg classifies the image as "gsm", then fails to parse image dimensions
 supplied, using either "-s WxH" or "-video_size WxH"

 How to reproduce:
 {{{
 %

 ffmpeg -y  -v 99 -pix_fmt yuv420p -video_size 1882x1062 -i
 "problem_file.yuv"
  -vf "pad=iw+16:ih+8:0:0:color=0x000000, format=pix_fmts=yuv420p"
 "problem_file_pad.yuv"

 ffmpeg version 4.4.1-static https://johnvansickle.com/ffmpeg/  Copyright
 (c) 2000-2021 the FFmpeg developers
   built with gcc 8 (Debian 8.3.0-6)
   configuration: --enable-gpl --enable-version3 --enable-static --disable-
 debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio
 --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp
 --enable-libgme --enable-gray --enable-libaom --enable-libfribidi
 --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame
 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
 --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt
 --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab
 --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264
 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid
 --enable-libzvbi --enable-libzimg
   libavutil      56. 70.100 / 56. 70.100
   libavcodec     58.134.100 / 58.134.100
   libavformat    58. 76.100 / 58. 76.100
   libavdevice    58. 13.100 / 58. 13.100
   libavfilter     7.110.100 /  7.110.100
   libswscale      5.  9.100 /  5.  9.100
   libswresample   3.  9.100 /  3.  9.100
   libpostproc    55.  9.100 / 55.  9.100
 Splitting the commandline.
 Reading option '-y' ... matched as option 'y' (overwrite output files)
 with argument '1'.
 Reading option '-v' ... matched as option 'v' (set logging level) with
 argument '99'.
 Reading option '-pix_fmt' ... matched as option 'pix_fmt' (set pixel
 format) with argument 'yuv420p'.
 Reading option '-video_size' ... matched as AVOption 'video_size' with
 argument '1882x1062'.
 Reading option '-i' ... matched as input url with argument
 'problem_file.yuv'.
 Reading option '-vf' ... matched as option 'vf' (set video filters) with
 argument 'pad=iw+16:ih+8:0:0:color=0x000000, format=pix_fmts=yuv420p'.
 Reading option 'problem_file_pad.yuv' ... matched as output url.
 Finished splitting the commandline.
 Parsing a group of options: global .
 Applying option y (overwrite output files) with argument 1.
 Applying option v (set logging level) with argument 99.
 Successfully parsed a group of options.
 Parsing a group of options: input url problem_file.yuv.
 Applying option pix_fmt (set pixel format) with argument yuv420p.
 Successfully parsed a group of options.
 Opening an input file: problem_file.yuv.
 [NULL @ 0x6f601c0] Opening 'problem_file.yuv' for reading
 [file @ 0x6f60f00] Setting default whitelist 'file,crypto,data'
 Probing gsm score:51 size:2048
 [gsm @ 0x6f601c0] Format gsm probed with size=2048 and score=51
 st:0 removing common factor 160 from timebase
 Option video_size not found.
 }}}


 Notes: This error only occurs with one of my images out 166.

 Workaround: Add input file option "-f rawvideo" to force ffmpeg to
 classify the input image format as "rawvideo".
 {{{
 ffmpeg -y  -v 99 -pix_fmt yuv420p -f rawvideo -video_size 1882x1062 -i
 "problem_file.yuv"
  -vf "pad=iw+16:ih+8:0:0:color=0x000000, format=pix_fmts=yuv420p"
 "problem_file_pad.yuv"
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10256>
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