[FFmpeg-trac] #9877(undetermined:new): ffmpeg core dumped error when map webvtt subtitles

[FFmpeg]

#9877: ffmpeg core dumped error when map webvtt subtitles
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             Reporter:  tudge        |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:  webvtt       |               Blocked By:
  crash                              |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by tudge):

 Replying to [comment:12 Carl Eugen Hoyos]:
 > If a command line exists that allows to reproduce the crash without
 using a hardware encoder please provide this command line.

 ./ffmpeg \
 -fix_sub_duration \
 -i "any.mkv" \
 -filter_complex \
 "[0:v]yadif,split=4[v1][v2][v3][v4]; \
 [v1]scale=w=1920:h=1080[v1out]; \
 [v2]scale=w=1280:h=720[v2out]; \
 [v3]scale=w=848:h=480[v3out]; \
 [v4]scale=w=640:h=360[v4out]" \
 -map [v1out] -c:v:0 libx264 -b:v:0 4M -maxrate:v:0 3M -minrate:v:0 3M
 -bufsize:v:0 6M -preset slow -crf 19 \
 -map [v2out] -c:v:1 libx264 -b:v:1 3M -maxrate:v:1 3M -minrate:v:1 1M
 -bufsize:v:1 6M -preset slow -crf 19 \
 -map [v3out] -c:v:2 libx264 -b:v:2 1M -maxrate:v:2 1M -minrate:v:2 1M
 -bufsize:v:2 2M -preset slow -crf 19 \
 -map [v4out] -c:v:3 libx264 -b:v:3 500K -maxrate:v:3 500K -minrate:v:3
 500K -bufsize:v:3 1M -preset slow -crf 19 \
 -c:a aac \
 -map a:0 -b:a:0 128k \
 -map a:1 -b:a:1 128k \
 -c:s webvtt \
 -map s:1 \
 -map s:2 \
 -f hls \
 -hls_time 6 \
 -hls_list_size 0 \
 -hls_playlist_type vod \
 -hls_flags independent_segments \
 -master_pl_name master.m3u8 \
 -hls_segment_type mpegts \
 -hls_segment_filename /any/chunk_%02d%v.ts \
 -var_stream_map "a:0,agroup:aud,name:Russian,language:ru,default:YES
 a:1,agroup:aud,name:EN,language:English,default:NO
 v:0,name:1080p,agroup:aud,s:0,sgroup:subs,name:Russian,language:ru,default:YES
 v:1,name:720p,agroup:aud,s:1,sgroup:subs,name:EN,language:English,default:NO
 v:2,name:480p,agroup:aud v:3,name:360p,agroup:aud" /any/stream_%v.m3u8
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Ticket URL: <https://trac.ffmpeg.org/ticket/9877#comment:13>
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