[FFmpeg-trac] #10440(undetermined:new): Segmentation fault (core dumped) when trying to generate hls output from .mp4 file

[FFmpeg]

#10440: Segmentation fault (core dumped) when trying to generate hls output from
.mp4 file
-------------------------------------+-------------------------------------
             Reporter:               |                    Owner:  (none)
  ffmpeg.golden                      |
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:
                                     |  undetermined
              Version:  6.0          |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Comment (by piusbnsl):

 I am getting the same error. Following is the command I used -

 {{{
 ffmpeg \
 -report \
 -i fireship-rust.mp4 \
 -i fireship-rust.vtt \
 -filter_complex
 "[0:v]scale=1280:720[vyuv];[vyuv]split=2[v0][vtemp1];[vtemp1]scale=w=960:h=540[v1];"
 \
 -map "[v0]" -map "[v1]" -map 0:a -map 0:a -map 1:s -map 1:s \
 -b:v:0 3500k -maxrate:v:0 3500k -bufsize:v:0 3500k \
 -b:v:1 1690k -maxrate:v:1 1690k -bufsize:v:1 1690k \
 -b:a 128k \
 -c:s webvtt \
 -c:v libx264 \
 -c:a aac \
 -f hls \
 -var_stream_map "v:0,a:0,s:0,sgroup:subtitle v:1,a:1,s:1,sgroup:subtitle"
 \
 -master_pl_name master.m3u8 \
 stream_%v/stream.m3u8
 }}}

 I am getting similar logs as above. I have pasted the whole report here -
 https://pastebin.com/mfqL24EZ

 I have tried multiple variations of the above command and am not able to
 get the subtitles working with multiple streams. It works fine for single
 stream -

 {{{
 ffmpeg \
 -i fireship-rust.mp4 \
 -i fireship-rust.vtt \
 -filter_complex "[0:v]scale=1280:720[v0];" \
 -map "[v0]" -map 0:a -map 1:s \
 -b:v:0 3500k -maxrate:v:0 3500k -bufsize:v:0 3500k \
 -b:a 128k \
 -c:s webvtt \
 -c:v libx264 \
 -c:a aac \
 -f hls \
 -var_stream_map "v:0,a:0,s:0,sgroup:subtitle" \
 -master_pl_name master.m3u8 \
 stream_%v/stream.m3u8
 }}}

 or

 {{{
 ffmpeg \
 -i fireship-rust.mp4 \
 -i fireship-rust.vtt \
 -filter_complex
 "[0:v]scale=1280:720[vyuv];[vyuv]split=2[v0][vtemp1];[vtemp1]scale=w=960:h=540[v1];"
 \
 -map "[v0]" -map 0:a -map 1:s \
 -b:a 128k \
 -c:s webvtt \
 -c:v libx264 \
 -c:a aac \
 -f hls \
 -var_stream_map "v:0,a:0,s:0,sgroup:subtitle" \
 -master_pl_name master.m3u8 \
 -hls_time 2 \
 -hls_segment_filename stream_%v/data%03d.ts \
 stream_%v/stream.m3u8 \
 -map "[v1]" -map 0:a \
 output.mkv
 }}}


 Let me know if you need my help anyhow debugging this.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10440#comment:6>
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