[FFmpeg-user] problem with muxing .264/ .ac3 to mkv

[Bernd Butscheidt]

Hello,

should this work?

I only added the "-fflags +genpts" options because of these suggestions: https://ffmpeg.org/trac/ffmpeg/ticket/1979 , but it doesn't change behaviour.

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ffmpeg -fflags +genpts -i Sport_HD_CUT_ntsc.264 -i Sport_HD_CUT_ntsc.ac3 -codec copy -map 0:0 -map 1:0 -f matroska  Sport_HD_CUT_ntsc.mkv
ffmpeg version 1.1.git Copyright (c) 2000-2013 the FFmpeg developers
  built on May  4 2013 13:30:41 with gcc 4.6.3 (Gentoo Hardened 4.6.3 p1.3, pie-0.5.2)
  configuration: --enable-avresample --enable-gpl --enable-libx264 --enable-nonfree --enable-libmp3lame --enable-libfaac --enable-frei0r --enable-libsoxr --cpu=amd64 --arch=x86_64 --enable-version3
  libavutil      52. 28.100 / 52. 28.100
  libavcodec     55.  7.100 / 55.  7.100
  libavformat    55.  4.101 / 55.  4.101
  libavdevice    55.  0.100 / 55.  0.100
  libavfilter     3. 63.101 /  3. 63.101
  libavresample   1.  1.  0 /  1.  1.  0
  libswscale      2.  2.100 /  2.  2.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  3.100 / 52.  3.100
[h264 @ 0x7fad8bf7f1c0] Stream #0: not enough frames to estimate rate; consider increasing probesize
Input #0, h264, from 'Sport_HD_CUT_ntsc.264':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: h264 (High), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1200k tbn, 47.95 tbc
[ac3 @ 0x7fad8bf81480] max_analyze_duration 5000000 reached at 5024000 microseconds
[ac3 @ 0x7fad8bf81480] Estimating duration from bitrate, this may be inaccurate
Input #1, ac3, from 'Sport_HD_CUT_ntsc.ac3':
  Duration: 00:01:00.58, start: 0.000000, bitrate: 448 kb/s
    Stream #1:0: Audio: ac3, 48000 Hz, stereo, fltp, 448 kb/s
File 'Sport_HD_CUT_ntsc.mkv' already exists. Overwrite ? [y/N] y
Output #0, matroska, to 'Sport_HD_CUT_ntsc.mkv':
  Metadata:
    encoder         : Lavf55.4.101
    Stream #0:0: Video: h264 (H264 / 0x34363248), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 23.98 fps, 1k tbn, 1200k tbc
    Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, 448 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #1:0 -> #0:1 (copy)
Press [q] to stop, [?] for help
[matroska @ 0x7fad8bf82240] Can't write packet with unknown timestamp
av_interleaved_write_frame(): Invalid argument