[FFmpeg-trac] #6231(avformat:new): hls_flags single_file segfault

[FFmpeg]

#6231: hls_flags single_file segfault
-------------------------------------+-------------------------------------
             Reporter:  blacktrash   |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:  avformat     |                  Version:  git-
             Keywords:  hls          |  master
  single_file                        |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 Since 4507f29e4a6a4363e0179c02bdb78d55e4d9a12c `hls_flags single_file`
 segfaults.

 How to reproduce:
 {{{
 $ ffmpeg -v verbose -i test.mp4 -c copy -map 0 -f hls -hls_flags
 +single_file test.m3u8
 ffmpeg version N-83882-g58f0bbc1ea Copyright (c) 2000-2017 the FFmpeg
 developers
   built with Apple LLVM version 8.0.0 (clang-800.0.42.1)
   configuration: --enable-gpl --enable-nonfree --disable-ffserver
 --enable-shared --enable-openssl --enable-libspeex --enable-libopus
 --enable-libfdk-aac --enable-libx265 --enable-libx264 --enable-libxvid
 --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libvpx
 --enable-libvidstab --extra-cflags=-I/sw/include --extra-libs=-L/sw/lib
   libavutil      55. 48.100 / 55. 48.100
   libavcodec     57. 83.100 / 57. 83.100
   libavformat    57. 66.104 / 57. 66.104
   libavdevice    57.  3.100 / 57.  3.100
   libavfilter     6. 76.100 /  6. 76.100
   libswscale      4.  3.101 /  4.  3.101
   libswresample   2.  4.100 /  2.  4.100
   libpostproc    54.  2.100 / 54.  2.100
 [h264 @ 0x7ff739808600] Reinit context to 240x400, pix_fmt: yuv420p
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf57.66.104
   Duration: 00:00:17.79, start: 0.000000, bitrate: 173 kb/s
     Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 /
 0x31637661), yuv420p(tv, smpte170m, left), 226x400 (240x400) [SAR 1:1 DAR
 113:200], 141 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
     Metadata:
       handler_name    : VideoHandler
     Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 24000 Hz, mono,
 fltp, 25 kb/s (default)
     Metadata:
       handler_name    : SoundHandler
 [mpegts @ 0x7ff739000600] muxrate VBR, pcr every 3 pkts, sdt every
 2147483647, pat/pmt every 2147483647 pkts
 Output #0, hls, to 'test.m3u8':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf57.66.104
     Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 /
 0x31637661), yuv420p(tv, smpte170m, left), 226x400 (0x0) [SAR 1:1 DAR
 113:200], q=2-31, 141 kb/s, 30 fps, 30 tbr, 90k tbn, 30 tbc (default)
     Metadata:
       handler_name    : VideoHandler
     Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 24000 Hz, mono,
 fltp, 25 kb/s (default)
     Metadata:
       handler_name    : SoundHandler
 Stream mapping:
   Stream #0:0 -> #0:0 (copy)
   Stream #0:1 -> #0:1 (copy)
 Press [q] to stop, [?] for help
 Automatically inserted bitstream filter 'h264_mp4toannexb'; args=''
 [hls muxer @ 0x7ff73a008a00] EXT-X-MEDIA-SEQUENCE:0
 Segmentation fault: 11
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6231>
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