[FFmpeg-trac] #2333(undetermined:new): mkv + ac3 remux adds a little time
FFmpeg
trac at avcodec.org
Wed Mar 6 22:13:08 CET 2013
#2333: mkv + ac3 remux adds a little time
-------------------------------------+-------------------------------------
Reporter: Squeeto | Type: defect
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
ffmpeg adds time to the muxed mkv and demuxed mkv:
ffmpeg version N-50025-gb8bb661 Copyright (c) 2000-2013 the FFmpeg
developers
built on Feb 17 2013 02:37:45 with gcc 4.7.2 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
--enable-gnutls --enable-libass --enable-libbluray --enable-libcaca
--enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-
libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
--enable-libopus --enable-librtmp --enable-libschroedinger --enable-
libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-
libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
--enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
libavutil 52. 17.101 / 52. 17.101
libavcodec 54. 91.103 / 54. 91.103
libavformat 54. 63.100 / 54. 63.100
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 38.100 / 3. 38.100
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
>ffmpeg -i input.mkv -i input.ac3 -map 0:0 -map 1:0 -vcodec copy -acodec
copy -y done.mkv
Input #0, matroska,webm, from 'input.mkv':
Duration: 00:00:12.85, start: 0.000000, bitrate: 6039 kb/s
Input #0, ac3, from 'input.ac3':
Duration: 00:00:12.86, start: 0.000000, bitrate: 256 kb/s
Input #0, matroska,webm, from 'done.mkv':
Metadata:
ENCODER : Lavf54.63.100
Duration: 00:00:12.93, start: 0.000000, bitrate: 6256 kb/s
>ffmpeg -i done.mkv -an -vcodec copy -y demux.mkv
>ffmpeg -i done.mkv -acodec copy -vn -y demux.ac3
Input #0, matroska,webm, from 'demux.mkv':
Metadata:
ENCODER : Lavf54.63.100
Duration: 00:00:12.91, start: 0.000000, bitrate: 6008 kb/s
Input #0, ac3, from 'demux.ac3':
Duration: 00:00:12.86, start: 0.000000, bitrate: 256 kb/s
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2333>
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