[FFmpeg-trac] #2312(FFmpeg:new): AVI (Matrox-compatible) file doubling up in size
FFmpeg
trac at avcodec.org
Thu Feb 28 18:40:35 CET 2013
#2312: AVI (Matrox-compatible) file doubling up in size
--------------------------------+-------------------------------------
Reporter: wleo75 | Type: defect
Status: new | Priority: important
Component: FFmpeg | Version:
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
--------------------------------+-------------------------------------
Summary of the bug:
How to reproduce:
{{{
% ffmpeg -y -i samplein.mxf -f avi -vcodec dvvideo -an -vf
crop=720:480:0:32 sampleout.avi
ffmpeg version N-49069-gc74d465
built on Jan 20 2013 23:39:19 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-
libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc
--enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-
libx264 --enable-libxavs --enable-libxvid --enable-zlib --enable-
filter=frei0r
libavutil 52. 15.100 / 52. 15.100
libavcodec 54. 89.100 / 54. 89.100
libavformat 54. 61.101 / 54. 61.101
libavdevice 54. 3.102 / 54. 3.102
libavfilter 3. 32.101 / 3. 32.101
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
}}}
The AVi generated ends up with 2X the file size. Mediainfo reports the
bitrate as 24.4 Mbps (exactly the same as any other Matrox AVI file);
however, if you consider the file size, the overall bitrate is 57.6 Mbps.
Sometimes, there are also issues playing out the output files.
Source file:
https://s3.amazonaws.com/vid-share-3/samplein.mxf
Output:
https://s3.amazonaws.com/vid-share-3/sampleout.avi
The same thing happens when tested on Linux.
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2312>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker
More information about the FFmpeg-trac
mailing list