[FFmpeg-trac] #7677(undetermined:closed): Some converted video files fail miserably with Apple video players

FFmpeg trac at avcodec.org
Thu Feb 21 11:26:12 EET 2019


#7677: Some converted video files fail miserably with Apple video players
-------------------------------------+-------------------------------------
             Reporter:  forthrin     |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:  duplicate
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by forthrin):

 The enclosed file and command line below will produce a file that, when
 synced with an iPod via iTunes, makes the native video player on an iPod
 Nano 3rd generation exit at 11:20.

 Note:

 - The file intentionally contain black/silence. The problem seems
 independent of content.
 - The problem persists even if adding `-video_track_timescale 24024`.
 - The problem disappears if you do `ffmpeg -i s.mov s.avi`, and use
 `s.avi` as input.

 {{{
 $ ffmpeg -y -i s.mov -vcodec libx264 -profile:v baseline -level 3.0
 -pix_fmt yuv420p t.mov
 ffmpeg version N-45416-g7e4d3dbe1 Copyright (c) 2000-2019 the FFmpeg
 developers
   built with Apple LLVM version 9.0.0 (clang-900.0.39.2)
   configuration: --enable-gpl --enable-libx264 --enable-libass
   libavutil      56. 26.100 / 56. 26.100
   libavcodec     58. 47.102 / 58. 47.102
   libavformat    58. 26.101 / 58. 26.101
   libavdevice    58.  6.101 / 58.  6.101
   libavfilter     7. 48.100 /  7. 48.100
   libswscale      5.  4.100 /  5.  4.100
   libswresample   3.  4.100 /  3.  4.100
   libpostproc    55.  4.100 / 55.  4.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 's.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 512
     compatible_brands: qt
     encoder         : Lavf58.26.101
   Duration: 00:12:00.03, start: 0.000000, bitrate: 10 kb/s
     Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 /
 0x31637661), yuv420p, 320x240 [SAR 480:347 DAR 640:347], 2 kb/s, 24 fps,
 24 tbr, 12288 tbn, 48 tbc (default)
     Metadata:
       handler_name    : VideoHandler
       encoder         : Lavc58.47.102 libx264
     Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz,
 stereo, fltp, 2 kb/s (default)
     Metadata:
       handler_name    : SoundHandler
 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 @ 0x7ff6d700f800] using SAR=480/347
 [libx264 @ 0x7ff6d700f800] using cpu capabilities: MMX2 SSE2Fast SSSE3
 SSE4.2 AVX FMA3 BMI2 AVX2
 [libx264 @ 0x7ff6d700f800] profile Constrained Baseline, level 3.0
 [libx264 @ 0x7ff6d700f800] 264 - core 155 r2917 0a84d98 - H.264/MPEG-4 AVC
 codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options:
 cabac=0 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1
 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0
 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=0 weightp=0 keyint=250
 keyint_min=24 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, mov, to 't.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 512
     compatible_brands: qt
     encoder         : Lavf58.26.101
     Stream #0:0(eng): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p,
 320x240 [SAR 480:347 DAR 640:347], q=-1--1, 24 fps, 24 tbn, 24 tbc
 (default)
     Metadata:
       handler_name    : VideoHandler
       encoder         : Lavc58.47.102 libx264
     Side data:
       cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
     Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz,
 stereo, fltp, 128 kb/s (default)
     Metadata:
       handler_name    : SoundHandler
       encoder         : Lavc58.47.102 aac
 video:202kB audio:184kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 140.998138%
 [libx264 @ 0x7ff6d700f800] frame I:70    Avg QP: 8.04  size:   243
 [libx264 @ 0x7ff6d700f800] frame P:17210 Avg QP:11.00  size:    11
 [libx264 @ 0x7ff6d700f800] mb I  I16..4: 100.0%  0.0%  0.0%
 [libx264 @ 0x7ff6d700f800] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.0%
 0.0%  0.0%  0.0%  0.0%    skip:100.0%
 [libx264 @ 0x7ff6d700f800] coded y,uvDC,uvAC intra: 0.0% 0.0% 0.0% inter:
 0.0% 0.0% 0.0%
 [libx264 @ 0x7ff6d700f800] i16 v,h,dc,p: 93%  0%  7%  0%
 [libx264 @ 0x7ff6d700f800] i8c dc,h,v,p: 100%  0%  0%  0%
 [libx264 @ 0x7ff6d700f800] kb/s:2.29
 [aac @ 0x7ff6d7013200] Qavg: 65536.000
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7677#comment:42>
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