[FFmpeg-trac] #8469(ffmpeg:new): HLS muxer creates variant playlists with wrong segment lengths when x264 baseline profile is used

[FFmpeg]

#8469: HLS muxer creates variant playlists with wrong segment lengths when x264
baseline profile is used
-------------------------------------+-------------------------------------
             Reporter:  pmiller      |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:  ffmpeg       |                  Version:  4.2
             Keywords:  hls,         |               Blocked By:
  profile:v baseline, segment        |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:

 When baseline profile is used in a hls muxer, the segment lengths for the
 variant are wrong.
 The other playlists have correct lengths (=6)

 How to reproduce:
 {{{
 % ffmpeg -y -i bigbuckbunny.mp4 \
 -report  -t 30  -ac 2 \
 -flags +global_header+cgop \
 -movflags faststart \
 -lavfi
 '[0:v]split=3[v0][v01][v02];[v01]scale=w=trunc(in_w/8)*6:h=trunc(in_h/8)*6[v1];[v02]scale=w=trunc(in_w/8)*4:h=trunc(in_h/8)*4[v2]'
 \
 -map '[v0]' -map 0:a:0 -map '[v1]' -map 0:a:0 -map '[v2]' -map 0:a:0 \
 -r:v:0 30 -force_key_frames:v:0 "expr:eq(mod(n,60),0)" \
 -c:v:0 libx264 \
 -x264opts:v:0 rc-lookahead=60:keyint=120:min-keyint=60:no-open-gop=1 \
 -pix_fmt:v:0 yuv420p \
 -profile:v:0 high \
 -b:v:0 3000k -minrate:v:0 3000k -maxrate:v:0 3300k -bufsize:v:0 3M \
 -r:v:1 30 -force_key_frames:v:1 "expr:eq(mod(n,60),0)" \
 -c:v:1 libx264 \
 -x264opts:v:1 rc-lookahead=60:keyint=120:min-keyint=60:no-open-gop=1 \
 -pix_fmt:v:1 yuv420p \
 -profile:v:1 main \
 -b:v:1 2000k -minrate:v:1 2000k -maxrate:v:1 2200k -bufsize:v:1 2M \
 -r:v:2 15 -force_key_frames:v:2 "expr:eq(mod(n,30),0)" \
 -c:v:2 libx264 \
 -x264opts:v:2 rc-lookahead=30:keyint=60:min-keyint=30:no-open-gop=1 \
 -pix_fmt:v:2 yuv420p \
 -profile:v:2 baseline \
 -b:v:2 800k -minrate:v:2 800k -maxrate:v:2 880k -bufsize:v:2 800k \
 -b:a:0 96k -b:a:1 48k -b:a:2 32k \
 -f hls -hls_segment_type fmp4 \
 -var_stream_map 'v:0,a:0 v:1,a:1 v:2,a:2' \
 -hls_segment_filename 'segments_%v.mp4' \
 -master_pl_name master.m3u8 \
 -hls_time 6 -hls_list_size 0 \
 -hls_flags
 single_file+discont_start+program_date_time+independent_segments+round_durations
 \ 'variant_%v.m3u8'

 }}}

 >cat variant_2.m3u8
 #EXTM3U
 #EXT-X-VERSION:7
 #EXT-X-TARGETDURATION:8
 #EXT-X-MEDIA-SEQUENCE:0
 #EXT-X-DISCONTINUITY
 #EXT-X-INDEPENDENT-SEGMENTS
 #EXT-X-MAP:URI="segments_2.mp4",BYTERANGE="1630 at 0"
 #EXTINF:8,
 #EXT-X-BYTERANGE:592264 at 1630
 #EXT-X-PROGRAM-DATE-TIME:2020-01-13T18:44:47.000-0500
 segments_2.mp4
 #EXTINF:6,
 #EXT-X-BYTERANGE:640195 at 593894
 #EXT-X-PROGRAM-DATE-TIME:2020-01-13T18:44:55.000-0500
 segments_2.mp4
 #EXTINF:6,
 #EXT-X-BYTERANGE:639175 at 1234089
 #EXT-X-PROGRAM-DATE-TIME:2020-01-13T18:45:01.000-0500
 segments_2.mp4
 #EXTINF:6,
 #EXT-X-BYTERANGE:496716 at 1873264
 #EXT-X-PROGRAM-DATE-TIME:2020-01-13T18:45:07.000-0500
 segments_2.mp4
 #EXTINF:4,
 #EXT-X-BYTERANGE:397751 at 2369980
 #EXT-X-PROGRAM-DATE-TIME:2020-01-13T18:45:13.000-0500
 segments_2.mp4
 #EXT-X-ENDLIST

--
Ticket URL: <https://trac.ffmpeg.org/ticket/8469>
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