[FFmpeg-trac] #2424(undetermined:new): transcoding some MKVs produces files that have the wrong size/aspect_ratio
FFmpeg
trac at avcodec.org
Tue Apr 2 19:56:19 CEST 2013
#2424: transcoding some MKVs produces files that have the wrong size/aspect_ratio
--------------------------------------+----------------------------------
Reporter: julian | Type: defect
Status: new | Priority: normal
Component: undetermined | Version: 1.2
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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download the file:
https://dl.dropbox.com/u/7221986/aspect_bug.mkv
and transcode it to a MP4 (here with the latest official mac binary):
{{{
ffmpeg -i aspect_bug.mkv -vcodec copy -acodec copy aspect_bug.mp4
ffmpeg version 1.2-tessus Copyright (c) 2000-2013 the FFmpeg developers
built on Mar 15 2013 01:18:55 with llvm-gcc 4.2.1 (LLVM build 2336.1.00)
configuration: --prefix=/Users/tessus/data/ext/ffmpeg/sw --as=yasm
--extra-version=tessus --disable-shared --enable-static --disable-ffplay
--enable-gpl --enable-pthreads --enable-postproc --enable-libmp3lame
--enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid
--enable-libspeex --enable-bzlib --enable-zlib --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libxavs --enable-version3 --enable-
libvo-aacenc --enable-libvo-amrwbenc --enable-libvpx --enable-libgsm
--enable-libopus --enable-fontconfig --enable-libfreetype --enable-libass
--enable-filters --enable-runtime-cpudetect
libavutil 52. 18.100 / 52. 18.100
libavcodec 54. 92.100 / 54. 92.100
libavformat 54. 63.104 / 54. 63.104
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 42.103 / 3. 42.103
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
Input #0, matroska,webm, from 'aspect_bug.mkv':
Duration: 00:01:00.06, start: 0.000000, bitrate: 4395 kb/s
Stream #0:0(eng): Video: h264 (High), yuv420p, 1280x536 [SAR 1:1 DAR
160:67], SAR 67:3 DAR 160:3, 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc
(default)
Stream #0:1(ger): Audio: dts (DTS), 48000 Hz, 5.1(side), fltp, 768
kb/s
Metadata:
title : DTS
Stream #0:2(ger): Subtitle: subrip
Metadata:
title : Forced
[mp4 @ 0x102019c00] track 1: codec frame size is not set
Output #0, mp4, to 'aspect_bug.mp4':
Metadata:
encoder : Lavf54.63.104
Stream #0:0(eng): Video: h264 ([33][0][0][0] / 0x0021), yuv420p,
1280x536 [SAR 67:3 DAR 160:3], q=2-31, 23.98 fps, 16k tbn, 1k tbc
(default)
Stream #0:1(ger): Audio: dts ([169][0][0][0] / 0x00A9), 48000 Hz,
5.1(side), 768 kb/s
Metadata:
title : DTS
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 1440 fps=0.0 q=-1.0 Lsize= 32257kB time=00:01:00.05
bitrate=4400.5kbits/s
video:26554kB audio:5630kB subtitle:0 global headers:0kB muxing overhead
0.227912%
}}}
open the MP4 in VLC/Mplayer/QuickTime Player =>for some reason it is
displayed in a completely weird size or aspect ratio. since ffmpeg seems
to know the file is 1280x536, this should not occur.
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2424>
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