Re: Transcode problem with mjpeg (ubuntu 9.10)

Hi Georg,

Georg Martius wrote:
> Hi Pablo,
> 
> On Sunday 27 December 2009, Pablo d'Angelo wrote:
>> Hi Georg,
>>
>> Georg Martius wrote:
>>> Hi Pablo,
>>>
> Can you try whether ffmpeg works with the video?
> E.g.:
> ffmpeg -i DSC_0103.AVI -sameq -vcodec mpeg4 -acodec copy  test.avi;

That does fail, too:
--------------------------------------
$ ffmpeg -i DSC_0103.AVI -sameq -vcodec mpeg4 -acodec copy 
test.aviFFmpeg version SVN-r19352-4:0.5+svn20090706-2ubuntu2, Copyright 
(c) 2000-2009 Fabrice Bellard, et al.
   configuration: --extra-version=4:0.5+svn20090706-2ubuntu2 
--prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau 
--enable-bzlib --enable-libgsm --enable-libschroedinger 
--enable-libspeex --enable-libtheora --enable-libvorbis 
--enable-pthreads --enable-zlib --disable-stripping --disable-vhook 
--enable-gpl --enable-postproc --enable-swscale --enable-x11grab 
--enable-libdc1394 
--extra-cflags=-I/build/buildd/ffmpeg-0.5+svn20090706/debian/include 
--enable-shared --disable-static
   libavutil     49.15. 0 / 49.15. 0
   libavcodec    52.20. 0 / 52.20. 0
   libavformat   52.31. 0 / 52.31. 0
   libavdevice   52. 1. 0 / 52. 1. 0
   libavfilter    0. 4. 0 /  0. 4. 0
   libswscale     0. 7. 1 /  0. 7. 1
   libpostproc   51. 2. 0 / 51. 2. 0
   built on Oct 13 2009 22:35:00, gcc: 4.4.1
Input #0, avi, from 'DSC_0103.AVI':
   Duration: 00:01:22.00, start: 0.000000, bitrate: 21001 kb/s
     Stream #0.0: Video: mjpeg, yuvj422p, 1280x720, 24 tbr, 24 tbn, 24 tbc
     Stream #0.1: Audio: pcm_s16le, 11025 Hz, mono, s16, 176 kb/s
Output #0, avi, to 'test.avi':
     Stream #0.0: Video: mpeg4, yuv420p, 1280x720, q=2-31, 200 kb/s, 90k 
tbn, 24 tbc
     Stream #0.1: Audio: pcm_s16le, 11025 Hz, mono, s16, 176 kb/s
Stream mapping:
   Stream #0.0 -> #0.0
   Stream #0.1 -> #0.1
[mpeg4 @ 0xec1730]timebase not supported by mpeg 4 standard
Error while opening codec for output stream #0.0 - maybe incorrect 
parameters such as bit_rate, rate, width or height
--------------------------------------------

I will try with a newer version of ffmpeg.

> Another option is to use the mplayer input module for transcode
> transcode -J preview -i DSC_0103.AVI -x mplayer,null -y null,null -o dummy
> The preview should display the movie correctly (maybe to fast though). 

That works somehow, but the colors are also messed up (looks like red 
and blue are swapped).

ciao
   Pablo