[FFmpeg-trac] #5710(avcodec:closed): AC3 frame sync error

FFmpeg trac at avcodec.org
Tue Dec 4 18:01:26 EET 2018


#5710: AC3 frame sync error
------------------------------------+-----------------------------------
             Reporter:  Mista_D     |                    Owner:
                 Type:  defect      |                   Status:  closed
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:  invalid
             Keywords:  ac3 mpegts  |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
------------------------------------+-----------------------------------

Comment (by Mista_D):

 The 4.1 still fails when attempt to seek past the broken frames



 ffmpeg410 -i AC3.mpg -xerror -ss 1 -f null -
 ffmpeg version 4.1 Copyright (c) 2000-2018 the FFmpeg developers
   built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-11)
   configuration: --prefix=/ffmpeg --enable-avfilter --enable-gpl --enable-
 libvpx --enable-libx264 --enable-libx265 --enable-libfdk-aac --disable-
 decoder=libgsm --disable-encoder=libgsm --disable-doc --disable-shared
 --disable-ffplay --pkg-config-flags=--static --extra-ldflags=-static
 --extra-libs='-lm -ldl -lpthread -lvpx -lx265 -lx264 -lfdk-aac -lvmaf'
 --enable-nonfree --enable-libvmaf --enable-version3
   libavutil      56. 22.100 / 56. 22.100
   libavcodec     58. 35.100 / 58. 35.100
   libavformat    58. 20.100 / 58. 20.100
   libavdevice    58.  5.100 / 58.  5.100
   libavfilter     7. 40.101 /  7. 40.101
   libswscale      5.  3.100 /  5.  3.100
   libswresample   3.  3.100 /  3.  3.100
   libpostproc    55.  3.100 / 55.  3.100
 [mpegts @ 0x3e48140] PES packet size mismatch
 Input #0, mpegts, from 'AC3.mpg':
   Duration: 00:00:10.48, start: 0.194844, bitrate: 53994 kb/s
   Program 1
     Stream #0:0[0x1e1]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
 yuv420p(tv, progressive), 1280x720 [SAR 1:1 DAR 16:9], Closed Captions,
 59.94 fps, 59.94 tbr, 90k tbn, 119.88 tbc
     Stream #0:1[0x1e2](eng): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 384 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (mpeg2video (native) -> wrapped_avframe (native))
   Stream #0:1 -> #0:1 (ac3 (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 [ac3 @ 0x3e50180] frame sync error
 Conversion failed!

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5710#comment:19>
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