[FFmpeg-trac] #10271(ffmpeg:new): HLS module master playlist does not generate properly

[FFmpeg]

#10271: HLS module master playlist does not generate properly
---------------------------------+---------------------------------------
             Reporter:  oachler  |                     Type:  defect
               Status:  new      |                 Priority:  normal
            Component:  ffmpeg   |                  Version:  unspecified
             Keywords:           |               Blocked By:
             Blocking:           |  Reproduced by developer:  0
Analyzed by developer:  0        |
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 Summary of the bug:

 When generating an m3u8 master playlist from certain files, the video
 channel is not generated even though the video m3u8 is generated and works
 correctly.

 Files that can have their codecs copied will not generate the proper
 master playlist.  Files that have recompression (not copy) work correctly

 How to reproduce:
 {{{
 % ffmpeg -i "H264File.mkv" \
  -bsf:v h264_mp4toannexb -vcodec copy \
  -acodec copy \
  -map 0:v:0 \
  -map 0:a:0 \
  -map 0:s:0 \
  -f hls \
  -var_stream_map "v:0,a:0,s:0,sgroup:subtitle" \
  -master_pl_name TP41aAaA0.m3u8 \
  -hls_list_size 0 \
  -hls_base_url /cache/ \
  -hls_time 10 \
  TP41aAaA0.m3u8.video.m3u8
 ffmpeg version 5.5.1 (and others)
 }}}

 Output (incorrect):
 #EXTM3U
 #EXT-X-VERSION:3
 #EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-
 ID="subtitle",NAME="subtitle_0",DEFAULT=YES,URI="TP41aAaA0.m3u8.video_vtt.m3u8"


 Working command line:
 {{{
 % ffmpeg -i "H264File.mkv" \
 -bsf:v h264_mp4toannexb \
 -vcodec libx264 \
 -acodec aac \
 -af "pan=stereo|FL< 1.0*FL + 0.707*FC + 0.707*BL|FR< 1.0*FR + 0.707*FC +
 0.707*BR" \
 -map 0:v:0 \
 -map 0:a:0 \
 -map 0:s:0 \
 -var_stream_map "v:0,a:0,s:0,sgroup:subtitle" \
 -master_pl_name TP41aAaA0.m3u8 \
 -hls_list_size 0 -hls_base_url /cache/ -hls_time 10 \
 -f hls \
 TP41aAaA0.m3u8.video.m3u8
 }}}

 Output (correct):
 #EXTM3U
 #EXT-X-VERSION:3
 #EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-
 ID="subtitle",NAME="subtitle_0",DEFAULT=YES,URI="TP41aAaA0.m3u8.video_vtt.m3u8"
 #EXT-X-STREAM-
 INF:BANDWIDTH=140800,RESOLUTION=720x404,CODECS="avc1.64001e,mp4a.40.2",SUBTITLES="subtitle"
 TP41aAaA0.m3u8.video.m3u8
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10271>
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