[FFmpeg-trac] #6925(avformat:new): Dash demuxer does not stop after -t <timeout> expires

FFmpeg trac at avcodec.org
Wed Dec 27 05:44:55 EET 2017


#6925: Dash demuxer does not stop after -t <timeout> expires
------------------------------------+------------------------------------
             Reporter:  tmm1        |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  important   |                Component:  avformat
              Version:  git-master  |               Resolution:
             Keywords:  dash        |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
------------------------------------+------------------------------------

Comment (by stevenliu):

 {{{
 liuqideMacBook-Pro:xxx liuqi$ ./ffmpeg -i
 http://dash.edgesuite.net/akamai/bbb_30fps/bbb_30fps.mpd -t 5 a.mp4
 ffmpeg version N-89611-g613f789c19 Copyright (c) 2000-2017 the FFmpeg
 developers
   built with Apple LLVM version 9.0.0 (clang-900.0.39.2)
   configuration: --enable-fontconfig --enable-gpl --enable-libass
 --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-
 libspeex --enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-
 version3 --cc='ccache gcc' --enable-nonfree --enable-videotoolbox
 --enable-libxml2
   libavutil      56.  7.100 / 56.  7.100
   libavcodec     58.  9.100 / 58.  9.100
   libavformat    58.  3.100 / 58.  3.100
   libavdevice    58.  0.100 / 58.  0.100
   libavfilter     7.  7.100 /  7.  7.100
   libswscale      5.  0.101 /  5.  0.101
   libswresample   3.  0.101 /  3.  0.101
   libpostproc    55.  0.100 / 55.  0.100
 [dash @ 0x7fd072800a00] Opening
 'http://dash.edgesuite.net/akamai/bbb_30fps/./bbb_30fps_1024x576_2500k/bbb_30fps_1024x576_2500k_0.m4v'
 for reading
 [dash @ 0x7fd072800a00] Could not read complete fragment.
 [dash @ 0x7fd072800a00] Opening
 'http://dash.edgesuite.net/akamai/bbb_30fps/./bbb_30fps_1024x576_2500k/bbb_30fps_1024x576_2500k_1.m4v'
 for reading
 [dash @ 0x7fd072800a00] Opening
 'http://dash.edgesuite.net/akamai/bbb_30fps/./bbb_a64k/bbb_a64k_0.m4a' for
 reading
 [dash @ 0x7fd072800a00] Could not read complete fragment.
 [dash @ 0x7fd072800a00] Opening
 'http://dash.edgesuite.net/akamai/bbb_30fps/./bbb_a64k/bbb_a64k_1.m4a' for
 reading
 Input #0, dash, from
 'http://dash.edgesuite.net/akamai/bbb_30fps/bbb_30fps.mpd':
   Duration: 00:10:34.00, start: 0.000000, bitrate: 0 kb/s
   Program 0
     Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1024x576
 [SAR 1:1 DAR 16:9], 1513 kb/s, 30 fps, 30 tbr, 30 tbn, 60 tbc
     Stream #0:1: Audio: aac (HE-AAC) (mp4a / 0x6134706D), 48000 Hz,
 stereo, fltp, 64 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
   Stream #0:1 -> #0:1 (aac (native) -> aac (native))
 Press [q] to stop, [?] for help
 [libx264 @ 0x7fd072830800] using SAR=1/1
 [libx264 @ 0x7fd072830800] using cpu capabilities: MMX2 SSE2Fast SSSE3
 SSE4.2 AVX
 [libx264 @ 0x7fd072830800] profile High, level 3.1
 [libx264 @ 0x7fd072830800] 264 - core 148 r2694 3b70645 - H.264/MPEG-4 AVC
 codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options:
 cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1
 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1
 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6
 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0
 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1
 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25
 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0
 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
 Output #0, mp4, to 'a.mp4':
   Metadata:
     encoder         : Lavf58.3.100
     Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p,
 1024x576 [SAR 1:1 DAR 16:9], q=-1--1, 30 fps, 15360 tbn, 30 tbc
     Metadata:
       encoder         : Lavc58.9.100 libx264
     Side data:
       cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
     Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo,
 fltp, 128 kb/s
     Metadata:
       encoder         : Lavc58.9.100 aac
 [dash @ 0x7fd072800a00] Opening
 'http://dash.edgesuite.net/akamai/bbb_30fps/./bbb_30fps_1024x576_2500k/bbb_30fps_1024x576_2500k_2.m4v'
 for reading
 [dash @ 0x7fd072800a00] Opening
 'http://dash.edgesuite.net/akamai/bbb_30fps/./bbb_a64k/bbb_a64k_2.m4a' for
 reading
 frame=  150 fps= 51 q=-1.0 Lsize=     264kB time=00:00:05.01 bitrate=
 431.4kbits/s speed=1.71x
 video:178kB audio:80kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 2.568110%
 [libx264 @ 0x7fd072830800] frame I:1     Avg QP:15.82  size:  7435
 [libx264 @ 0x7fd072830800] frame P:46    Avg QP:19.55  size:  2652
 [libx264 @ 0x7fd072830800] frame B:103   Avg QP:21.79  size:   504
 [libx264 @ 0x7fd072830800] consecutive B-frames:  4.7%  2.7% 26.0% 66.7%
 [libx264 @ 0x7fd072830800] mb I  I16..4: 59.9% 33.5%  6.6%
 [libx264 @ 0x7fd072830800] mb P  I16..4:  6.8% 12.3%  0.8%  P16..4:  4.5%
 1.3%  0.8%  0.0%  0.0%    skip:73.5%
 [libx264 @ 0x7fd072830800] mb B  I16..4:  1.6%  0.7%  0.0%  B16..8:  2.5%
 0.4%  0.1%  direct: 6.0%  skip:88.7%  L0:44.9% L1:46.9% BI: 8.2%
 [libx264 @ 0x7fd072830800] 8x8 transform intra:53.4% inter:72.5%
 [libx264 @ 0x7fd072830800] coded y,uvDC,uvAC intra: 7.5% 22.3% 6.9% inter:
 1.3% 6.2% 0.5%
 [libx264 @ 0x7fd072830800] i16 v,h,dc,p: 72% 17%  8%  3%
 [libx264 @ 0x7fd072830800] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 35% 20% 40%  1%
 1%  1%  1%  1%  1%
 [libx264 @ 0x7fd072830800] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 32% 25% 20%  4%
 4%  4%  4%  4%  4%
 [libx264 @ 0x7fd072830800] i8c dc,h,v,p: 75% 14% 10%  1%
 [libx264 @ 0x7fd072830800] Weighted P-Frames: Y:21.7% UV:21.7%
 [libx264 @ 0x7fd072830800] ref P L0: 65.1% 10.1% 21.2%  3.3%  0.3%
 [libx264 @ 0x7fd072830800] ref B L0: 76.6% 18.4%  5.0%
 [libx264 @ 0x7fd072830800] ref B L1: 92.6%  7.4%
 [libx264 @ 0x7fd072830800] kb/s:290.21
 [aac @ 0x7fd07380a600] Qavg: 3537.413
 liuqideMacBook-Pro:xxx liuqi$
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6925#comment:5>
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