[FFmpeg-trac] #8037(avformat:open): Incorrect HLS segment duration after 64350th frame with -hls_init_time

[FFmpeg]

#8037: Incorrect HLS segment duration after 64350th frame with -hls_init_time
-------------------------------------+-------------------------------------
             Reporter:  DusanBrejka  |                    Owner:  stevenliu
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  hls mpegts   |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by DusanBrejka):

 Interesting, I'm getting different results with the patch applied:


 {{{
 ubuntu at ip-172-31-0-112:~/ffmpegtemp/ffmpeg$ ./ffmpeg -v quiet -report   -f
 lavfi -i testsrc=size=5x5:rate=30:duration=2200   -g 30 -f hls -hls_time 4
 -hls_init_time 1 -start_number 540   -hls_segment_filename "hls/%03d.ts"
 -t 2160 "hls/master.m3u8"
 ubuntu at ip-172-31-0-112:~/ffmpegtemp/ffmpeg$ cat hls/master.m3u8
 #EXTM3U
 #EXT-X-VERSION:3
 #EXT-X-TARGETDURATION:1
 #EXT-X-MEDIA-SEQUENCE:1091
 #EXTINF:1.000000,
 1091.ts
 #EXTINF:1.000000,
 1092.ts
 #EXTINF:1.000000,
 1093.ts
 #EXTINF:1.000000,
 1094.ts
 #EXTINF:1.000000,
 1095.ts
 #EXT-X-ENDLIST
 ubuntu at ip-172-31-0-112:~/ffmpegtemp/ffmpeg$ git diff
 diff --git a/libavformat/hlsenc.c b/libavformat/hlsenc.c
 index 2ade6723f9..51310fb528 100644
 --- a/libavformat/hlsenc.c
 +++ b/libavformat/hlsenc.c
 @@ -2301,8 +2301,8 @@ static int hls_write_packet(AVFormatContext *s,
 AVPacket *pkt)

      if (vs->sequence - vs->nb_entries > hls->start_sequence &&
 hls->init_time > 0) {
          /* reset end_pts, hls->recording_time at end of the init hls list
 */
 -        int init_list_dur = hls->init_time * vs->nb_entries *
 AV_TIME_BASE;
 -        int after_init_list_dur = (vs->sequence - hls->start_sequence -
 vs->nb_entries ) * (hls->time * AV_TIME_BASE);
 +        int64_t init_list_dur = hls->init_time * vs->nb_entries *
 AV_TIME_BASE;
 +        int64_t after_init_list_dur = (vs->sequence - hls->start_sequence
 - vs->nb_entries ) * (hls->time * AV_TIME_BASE);
          hls->recording_time = hls->time * AV_TIME_BASE;
          end_pts = init_list_dur + after_init_list_dur ;
      }
 ubuntu at ip-172-31-0-112:~/ffmpegtemp/ffmpeg$ git branch
 * master
 ubuntu at ip-172-31-0-112:~/ffmpegtemp/ffmpeg$ ./ffmpeg -version
 ffmpeg version N-94387-g923d5c489f Copyright (c) 2000-2019 the FFmpeg
 developers
 built with gcc 7 (Ubuntu 7.4.0-1ubuntu1~18.04.1)
 configuration: --enable-gpl --disable-stripping --enable-avresample
 --disable-filter=resample --enable-avisynth --enable-gnutls --enable-
 ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libcaca
 --enable-libcdio --enable-libcodec2 --enable-libfontconfig --enable-
 libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-
 libjack --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt
 --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband
 --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex
 --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis
 --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265
 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi
 --enable-lv2 --enable-openal --enable-opengl --enable-sdl2 --enable-
 nonfree --enable-libfdk-aac --enable-libdrm --enable-chromaprint --enable-
 frei0r --enable-libx264 --enable-shared
 libavutil      56. 32.100 / 56. 22.100
 libavcodec     58. 55.100 / 58. 35.100
 libavformat    58. 30.100 / 58. 20.100
 libavdevice    58.  9.100 / 58.  5.100
 libavfilter     7. 58.100 /  7. 40.101
 libavresample   4.  0.  0 /  4.  0.  0
 libswscale      5.  6.100 /  5.  3.100
 libswresample   3.  6.100 /  3.  3.100
 libpostproc    55.  6.100 / 55.  3.100
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/8037#comment:7>
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