[FFmpeg-trac] #3749(avformat:new): segment with segment_time_delta cause the first file empty.

[FFmpeg]

#3749: segment with segment_time_delta cause the first file empty.
-------------------------------------+-------------------------------------
             Reporter:  qrtt1        |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:  avformat     |                  Version:  git-
             Keywords:  hls segment  |  master
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------
 Summary of the bug:

 I try to make hls segment with the segment_time_delta parameter,
 and found the size of 1st file is always 0.

 How to reproduce:
 {{{
 % qty:Downloads qrtt1$ /Users/qrtt1/temp/FFmpeg/ffmpeg -i FOOO.ts -codec
 copy  -map 0 -f segment -segment_list_type m3u8 -segment_time_delta 11
 -segment_list foo.mp4.m3u8 foo.mp4%05d.ts
 ffmpeg version N-64303-g3f42434 Copyright (c) 2000-2014 the FFmpeg
 developers
   built on Jun 29 2014 23:10:40 with Apple LLVM version 5.1
 (clang-503.0.40) (based on LLVM 3.4svn)
   configuration: --prefix=/Users/qrtt1/temp/FFmpeg/OUT
   libavutil      52. 90.101 / 52. 90.101
   libavcodec     55. 68.100 / 55. 68.100
   libavformat    55. 44.100 / 55. 44.100
   libavdevice    55. 13.101 / 55. 13.101
   libavfilter     4.  9.100 /  4.  9.100
   libswscale      2.  6.100 /  2.  6.100
   libswresample   0. 19.100 /  0. 19.100
 [h264 @ 0x7fca1a008000] non-existing SPS 0 referenced in buffering period
     Last message repeated 1 times
 Input #0, mpegts, from 'FOOO.ts':
   Duration: 00:01:16.08, start: 1.400000, bitrate: 6620 kb/s
   Program 1
     Metadata:
       service_name    : Service01
       service_provider: FFmpeg
     Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B),
 yuv420p(tv, bt709), 1280x720 [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 90k
 tbn, 59.94 tbc
     Stream #0:1[0x101](jan): Audio: aac ([15][0][0][0] / 0x000F), 48000
 Hz, stereo, fltp, 129 kb/s
 [segment @ 0x7fca1a029800] Using AVStream.codec.time_base as a timebase
 hint to the muxer is deprecated. Set AVStream.time_base instead.
     Last message repeated 1 times
 [mpegts @ 0x7fca1a02b600] Using AVStream.codec.time_base as a timebase
 hint to the muxer is deprecated. Set AVStream.time_base instead.
     Last message repeated 1 times
 Output #0, segment, to 'foo.mp4%05d.ts':
   Metadata:
     encoder         : Lavf55.44.100
     Stream #0:0: Video: h264 ([27][0][0][0] / 0x001B), yuv420p, 1280x720
 [SAR 1:1 DAR 16:9], q=2-31, 29.97 fps, 29.97 tbn, 29.97 tbc
     Stream #0:1(jan): Audio: aac ([15][0][0][0] / 0x000F), 48000 Hz,
 stereo, 129 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (copy)
   Stream #0:1 -> #0:1 (copy)
 Press [q] to stop, [?] for help
 [NULL @ 0x7fca1a008000] non-existing SPS 0 referenced in buffering period
 [mpegts @ 0x7fca1a02b600] Using AVStream.codec.time_base as a timebase
 hint to the muxer is deprecated. Set AVStream.time_base instead.
     Last message repeated 5 times
 }}}


 {{{
 qty:Downloads qrtt1$ ls -alh|grep foo|head
 -rw-r--r--   1 qrtt1  staff   1.6K  6 30 00:29 foo.mp4.m3u8
 -rw-r--r--   1 qrtt1  staff     0B  6 30 00:29 foo.mp400000.ts
 -rw-r--r--   1 qrtt1  staff    30K  6 30 00:29 foo.mp400001.ts
 -rw-r--r--   1 qrtt1  staff    99K  6 30 00:29 foo.mp400002.ts
 -rw-r--r--   1 qrtt1  staff    60K  6 30 00:29 foo.mp400003.ts
 -rw-r--r--   1 qrtt1  staff   689K  6 30 00:29 foo.mp400004.ts
 -rw-r--r--   1 qrtt1  staff   595K  6 30 00:29 foo.mp400005.ts
 -rw-r--r--   1 qrtt1  staff   500K  6 30 00:29 foo.mp400006.ts
 -rw-r--r--   1 qrtt1  staff   1.5M  6 30 00:29 foo.mp400007.ts
 -rw-r--r--   1 qrtt1  staff   2.6M  6 30 00:29 foo.mp400008.ts
 }}}

 The file foo.mp400000.ts with duration 0, it will cause play failure:

 {{{
 qty:Downloads qrtt1$ head -10 foo.mp4.m3u8
 #EXTM3U
 #EXT-X-VERSION:3
 #EXT-X-MEDIA-SEQUENCE:0
 #EXT-X-ALLOW-CACHE:YES
 #EXT-X-TARGETDURATION:3
 #EXTINF:0.000000,
 foo.mp400000.ts
 #EXTINF:0.066733,
 foo.mp400001.ts
 #EXTINF:0.200200,
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/3749>
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