[FFmpeg-trac] #3528(undetermined:new): Ffmpeg does not maintain or store the aspect ratio with WMV2 and libxvid codecs
FFmpeg
trac at avcodec.org
Thu Apr 3 16:20:07 CEST 2014
#3528: Ffmpeg does not maintain or store the aspect ratio with WMV2 and libxvid
codecs
-------------------------------------+-------------------------------------
Reporter: ramitbhalla | Type: defect
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug: When using libxvid or wmv2 ffmpeg does not store or
maintain the aspect ratio.
Whether one specifies the -aspect or setsar it doesn't seem to make any
difference. When played back in WMP the aspect ratio is not preserved.
I will upload a sample video which has 16:9 aspect ratio and plays back
fine in WMP. When converted using wmv2 or libxvid, when played back in WMP
it shows as a 4:3 (with wmv2 it doesn't seem to store the aspect ratio,
with libxvid it appears to store it but when played back in WMP it still
shows up as 4:3, for some reason it isnn't storing it correctly).
I will upload the same file as below (cut down in size and renamed)
One examples of wmv2 below (you can also use libxvid instead)
How to reproduce:
{{{
ffmpeg.2315Custom1.exe -i "..\The Bridges That Built London... (BBC FOUR -
14-06-20
12).ts" -vcodec wmv2 -b 1400000 -acodec wmav2 -ab 192k test.wmv
ffmpeg version N-62019-gd506dea Copyright (c) 2000-2014 the FFmpeg
developers
built on Apr 1 2014 13:31:14 with gcc 4.8.0 (GCC)
configuration: --arch=x86 --target-os=mingw32 --cross-
prefix=/Software/ffmpeg/sandbox/mingw-w64-i686/bin/i686-w64-ming
w32- --pkg-config=pkg-config --enable-gpl --enable-libx264 --enable-
avisynth --enable-libxvid --enable-libmp3lame --enab
le-version3 --enable-zlib --enable-librtmp --enable-libvorbis --enable-
libtheora --enable-libspeex --enable-libopenjpeg
--enable-gnutls --enable-libgsm --enable-libfreetype --enable-libopus
--disable-w32threads --enable-frei0r --enable-filt
er=frei0r --enable-libvo-aacenc --enable-bzlib --enable-libxavs --extra-
cflags=-DPTW32_STATIC_LIB --enable-libopencore-a
mrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-
libschroedinger --enable-libvpx --enable-libilbc --pref
ix=/Software/ffmpeg/sandbox/mingw-w64-i686/i686-w64-mingw32 --enable-
static --disable-shared --enable-libsoxr --enable-f
ontconfig --enable-libass --enable-libutvideo --enable-libbluray --enable-
iconv --enable-libtwolame --extra-cflags=-DLIB
TWOLAME_STATIC --enable-libzvbi --enable-libcaca --enable-libmodplug
--extra-libs=-lstdc++ --extra-libs=-lpng --enable-l
ibvidstab --extra-cflags= --extra-cflags= --enable-nonfree --enable-
libfdk-aac --enable-libfaac --enable-runtime-cpudete
ct
libavutil 52. 71.100 / 52. 71.100
libavcodec 55. 55.107 / 55. 55.107
libavformat 55. 36.100 / 55. 36.100
libavdevice 55. 11.100 / 55. 11.100
libavfilter 4. 3.100 / 4. 3.100
libswscale 2. 5.102 / 2. 5.102
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
[NULL @ 034f3d60] start time is not set in estimate_timings_from_pts
Input #0, mpegts, from '..\The Bridges That Built London... (BBC FOUR -
14-06-2012).ts':
Duration: 00:01:38.16, start: 0.151678, bitrate: 4310 kb/s
Program 1
Stream #0:0[0x30]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
yuv420p(tv), 720x576 [SAR 64:45 DAR 16:9], max.
15000 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
Stream #0:1[0x40](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
stereo, s16p, 256 kb/s
Stream #0:2[0x50](eng): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
Please use -b:a or -b:v, -b is ambiguous
Output #0, asf, to 'test.wmv':
Metadata:
WM/EncodingSettings: Lavf55.36.100
Stream #0:0: Video: wmv2 (WMV2 / 0x32564D57), yuv420p, 720x576 [SAR
64:45 DAR 16:9], q=2-31, 1400 kb/s, 1k tbn, 25 t
bc
Stream #0:1(eng): Audio: wmav2 (a[1][0][0] / 0x0161), 48000 Hz,
stereo, fltp, 192 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (mpeg2video -> wmv2)
Stream #0:1 -> #0:1 (mp2 -> wmav2)
Press [q] to stop, [?] for help
frame= 2455 fps= 70 q=5.1 Lsize= 19720kB time=00:01:38.20
bitrate=1645.1kbits/s
video:16771kB audio:2300kB subtitle:0kB other streams:0kB global
headers:0kB muxing overhead: 3.402935%
}}}
{{{
ffmpeg.2315Custom1.exe -i test.wmv
ffmpeg version N-62019-gd506dea Copyright (c) 2000-2014 the FFmpeg
developers
built on Apr 1 2014 13:31:14 with gcc 4.8.0 (GCC)
configuration: --arch=x86 --target-os=mingw32 --cross-
prefix=/Software/ffmpeg/sandbox/mingw-w64-i686/bin/i686-w64-ming
w32- --pkg-config=pkg-config --enable-gpl --enable-libx264 --enable-
avisynth --enable-libxvid --enable-libmp3lame --enab
le-version3 --enable-zlib --enable-librtmp --enable-libvorbis --enable-
libtheora --enable-libspeex --enable-libopenjpeg
--enable-gnutls --enable-libgsm --enable-libfreetype --enable-libopus
--disable-w32threads --enable-frei0r --enable-filt
er=frei0r --enable-libvo-aacenc --enable-bzlib --enable-libxavs --extra-
cflags=-DPTW32_STATIC_LIB --enable-libopencore-a
mrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-
libschroedinger --enable-libvpx --enable-libilbc --pref
ix=/Software/ffmpeg/sandbox/mingw-w64-i686/i686-w64-mingw32 --enable-
static --disable-shared --enable-libsoxr --enable-f
ontconfig --enable-libass --enable-libutvideo --enable-libbluray --enable-
iconv --enable-libtwolame --extra-cflags=-DLIB
TWOLAME_STATIC --enable-libzvbi --enable-libcaca --enable-libmodplug
--extra-libs=-lstdc++ --extra-libs=-lpng --enable-l
ibvidstab --extra-cflags= --extra-cflags= --enable-nonfree --enable-
libfdk-aac --enable-libfaac --enable-runtime-cpudete
ct
libavutil 52. 71.100 / 52. 71.100
libavcodec 55. 55.107 / 55. 55.107
libavformat 55. 36.100 / 55. 36.100
libavdevice 55. 11.100 / 55. 11.100
libavfilter 4. 3.100 / 4. 3.100
libswscale 2. 5.102 / 2. 5.102
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, asf, from 'test.wmv':
Metadata:
encoder : Lavf55.36.100
Duration: 00:01:38.29, start: 0.000000, bitrate: 1643 kb/s
Stream #0:0: Video: wmv2 (WMV2 / 0x32564D57), yuv420p, 720x576, 25
tbr, 1k tbn, 1k tbc
Stream #0:1: Audio: wmav2 (a[1][0][0] / 0x0161), 48000 Hz, stereo,
fltp, 192 kb/s
At least one output file must be specified}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/3528>
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