[FFmpeg-trac] #7341(undetermined:new): hls mpegts segmentation is not consistent all the way through

[FFmpeg]

#7341: hls mpegts segmentation is not consistent all the way through
-------------------------------------+-------------------------------------
             Reporter:  ronak2121    |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:

 Try to generate an HLS stream using an mpegts container using the
 following command:

 ~/bin/ffmpeg -i test.mp4 -codec copy -hls_time 0.975238095238095
 -hls_segment_type mpegts -hls_flags single_file -hls_playlist_type vod
 test.m3u8

 or

 ~/bin/ffmpeg -i test.mp4 -codec copy -hls_time 0.975238095238095
 -hls_segment_type mpegts -hls_playlist_type vod test.m3u8

 Open the m3u8 file, and see that the segmentation is all over the place,
 sometimes 1 AAC frame less, or a few AAC frames larger than
 0.975238095238095 (21 AAC frames at 22050kHz or 42 frames at 44100kHz).

 How to reproduce:
 {{{
 -bash-4.1$ ~/bin/ffmpeg -i test.mp4 -codec copy -hls_time
 0.975238095238095 -hls_segment_type mpegts -hls_flags
 single_file+append_list -hls_playlist_type vod test.m3u8
 ffmpeg version N-91512-ga5c17cf Copyright (c) 2000-2018 the FFmpeg
 developers
   built with gcc 4.4.6 (GCC) 20110731 (Red Hat 4.4.6-3)
   configuration: --prefix=/home/ronakp/ffmpeg_build --pkg-config-
 flags=--static --extra-cflags=-I/home/ronakp/ffmpeg_build/include --extra-
 ldflags=-L/home/ronakp/ffmpeg_build/lib --extra-libs=-lpthread --extra-
 libs=-lm --bindir=/home/ronakp/bin --enable-gpl --enable-libfdk_aac
 --enable-libmp3lame --enable-libopus --enable-nonfree
   libavutil      56. 18.102 / 56. 18.102
   libavcodec     58. 21.106 / 58. 21.106
   libavformat    58. 17.101 / 58. 17.101
   libavdevice    58.  4.101 / 58.  4.101
   libavfilter     7. 26.100 /  7. 26.100
   libswscale      5.  2.100 /  5.  2.100
   libswresample   3.  2.100 /  3.  2.100
   libpostproc    55.  2.100 / 55.  2.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 1
     compatible_brands: isom
     creation_time   : 2013-12-08T19:51:00.000000Z
   Duration: 00:11:24.11, start: 0.000000, bitrate: 31 kb/s
     Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 22050 Hz, mono,
 fltp, 30 kb/s (default)
     Metadata:
       creation_time   : 2013-12-08T19:51:00.000000Z
       handler_name    : GPAC ISO Audio Handler
 [hls @ 0x22f4200] Opening 'test.ts' for writing
 [mpegts @ 0x22e4f00] frame size not set
 Output #0, hls, to 'test.m3u8':
   Metadata:
     major_brand     : isom
     minor_version   : 1
     compatible_brands: isom
     encoder         : Lavf58.17.101
     Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 22050 Hz, mono,
 fltp, 30 kb/s (default)
     Metadata:
       creation_time   : 2013-12-08T19:51:00.000000Z
       handler_name    : GPAC ISO Audio Handler
 Stream mapping:
   Stream #0:0 -> #0:0 (copy)
 Press [q] to stop, [?] for help
 size=N/A time=00:11:24.05 bitrate=N/A speed=1.06e+04x
 video:0kB audio:2572kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: unknown
 }}}
 Patches should be submitted to the ffmpeg-devel mailing list and not this
 bug tracker.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7341>
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