[FFmpeg-trac] #10650(undetermined:new): Subtitle problem in new ffmpeg version transcoding crashes with sume subtitles

[FFmpeg]

#10650: Subtitle problem in new ffmpeg version transcoding crashes with sume
subtitles
-------------------------------------+-------------------------------------
             Reporter:  Wkuf         |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
  dvb_subtitle subtitle compilation  |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug: I used ffmpeg version N-99878-g406879f to code my
 videos since many years without problems. After recompiling ffmpeg version
 N-112494-g393d1ee541 the option -scodec dvdsub crashes videos with
 dvb_subtitle in a ts file. If I transcode the same video with the old
 version everything is fine.
 How to reproduce:
 {{{
 % ffmpeg -y -itsoffset 0 -threads 4 -i
 /mnt/00001_Neo_test_dd_abspielbar.ts -ss 00:00:02 -to 00:00:14
 -filter_complex "[0]yadif=0:-1:0[deint]" -map "[deint]" -map 0:a -map
 0:s:0 -codec:v libx264 -preset veryslow -crf 23 -c:a libfdk_aac -b:a 128k
 -scodec dvdsub /mnt/00001_Neo_test_dd_abspielbar_ffmpeg_new.mkv
 ffmpeg version N-112494-g393d1ee541 Copyright (c) 2000-2023 the FFmpeg
 developers
   built with gcc 11 (Ubuntu 11.4.0-1ubuntu1~22.04)
   configuration: --prefix=/home/werner/ffmpeg_build --pkg-config-
 flags=--static --extra-cflags=-I/home/werner/ffmpeg_build/include --extra-
 ldflags=-L/home/werner/ffmpeg_build/lib --extra-libs='-lpthread -lm'
 --ld=g++ --bindir=/home/werner/bin --enable-gpl --enable-gnutls --enable-
 libaom --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-
 libmp3lame --enable-libopus --enable-libsvtav1 --enable-libdav1d --enable-
 libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-
 nonfree --enable-libzvbi
   libavutil      58. 27.100 / 58. 27.100
   libavcodec     60. 30.102 / 60. 30.102
   libavformat    60. 15.100 / 60. 15.100
   libavdevice    60.  2.101 / 60.  2.101
   libavfilter     9. 11.100 /  9. 11.100
   libswscale      7.  4.100 /  7.  4.100
   libswresample   4. 11.100 /  4. 11.100
   libpostproc    57.  2.100 / 57.  2.100
 }}}

 I added two log files
 fmpeg-20231103-193114_new.log is the result of the crash with version
 N-112494-g393d1ee541

 ffmpeg-20231103-193512_old.log is the result of the old version that
 generates perfect output files including the correct subtitle
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10650>
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