ogv to avi

[gishaust]

hi ubuntu lovers

I am trying to create some screen casts about ubuntu and am having some trouble. I use myRecordDesktop and it works fine. The ogv gives prefect audio and video.

The issue comes when I convert it to avi or mp4 it does not matter what I use I get the same result every time. I get perfect audio but the visual distorts as you can see from the image below.

Can anyone tell me why?

This is mencoder it works but the image distorts, I have also tried WinFF with the same result.

mencoder out.ogv -o ram.avi -oac mp3lame -lameopts fast:preset=standard -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=4000

I tried VLC and I got a good picture but no audio?

[ron999]

Hi
Can you upload a short ogv sample file somewhere?

[FakeOutdoorsman]

MEncoder doesn't get much attention from developers anymore as far as I know. You could try ffmpeg directly:

ffmpeg -i input.org -vcodec mpeg4 -qscale 3 -acodec libmp3lame -aq 4 output.avi

Lower qscale and aq values mean higher quality output. There was a time when ffmpeg could not decode recordmydesktop videos properly. I don't remember which versions of Ubuntu this affected. If it still gives you a bad output then you'll have to compile ffmpeg:

How To Compile FFmpeg and x264 on Ubuntu

[gishaust]

Thanks for the replys

I have just tried ffmeg and got the same result

here is an example of the issue

http://www.purencool.com/video/
You will be able see the ogv is fine but after coding it into an avi looks awful

[gishaust]

I went through How To Compile FFmpeg and x264 on Ubuntu tutorial and rebuilt the ffmpeg and it no converts to avi.

But I can only play it on my ubuntu box I move it to the windows machine an it says it can open the avi in media player when doing the transcoding I get this error

ffmpeg -i anewtrial.ogv -vcodec mpeg4 -qscale 3 -acodec libmp3lame -aq 4 trialing.aviffmpeg version git-2012-04-12-4561feb Copyright (c) 2000-2012 the FFmpeg developers
  built on Apr 13 2012 07:55:14 with gcc 4.6.1
  configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-nonfree --enable-version3 --enable-x11grab
  libavutil      51. 46.100 / 51. 46.100
  libavcodec     54. 14.101 / 54. 14.101
  libavformat    54.  3.100 / 54.  3.100
  libavdevice    53.  4.100 / 53.  4.100
  libavfilter     2. 67.101 /  2. 67.101
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 11.100 /  0. 11.100
  libpostproc    52.  0.100 / 52.  0.100
[ogg @ 0xae943a0] Broken file, keyframe not correctly marked.
Input #0, ogg, from 'anewtrial.ogv':
  Duration: 00:00:45.40, start: 0.000000, bitrate: 2348 kb/s
    Stream #0:0: Data: none
    Stream #0:1: Video: theora, yuv420p, 864x592 [SAR 1:1 DAR 54:37], 20 fps, 20 tbr, 20 tbn, 20 tbc
    Stream #0:2: Audio: vorbis, 22050 Hz, mono, s16, 89 kb/s
Please use -q:a or -q:v, -qscale is ambiguous
[buffer @ 0xaee17c0] w:864 h:592 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param:flags=2
Output #0, avi, to 'trialing.avi':
  Metadata:
    ISFT            : Lavf54.3.100
    Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 864x592 [SAR 1:1 DAR 54:37], q=2-31, 200 kb/s, 20 tbn, 20 tbc
    Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 22050 Hz, mono, s16
Stream mapping:
  Stream #0:1 -> #0:0 (theora -> mpeg4)
  Stream #0:2 -> #0:1 (vorbis -> libmp3lame)
Press [q] to stop, [?] for help
[ogg @ 0xae943a0] Broken file, keyframe not correctly marked.
    Last message repeated 1 times
Broken file, keyframe not correctly marked.ime=00:00:09.80 bitrate=2367.3kbits/s    
Broken file, keyframe not correctly marked.ime=00:00:16.90 bitrate=3115.6kbits/s    
[ogg @ 0xae943a0] Broken file, keyframe not correctly marked.
Broken file, keyframe not correctly marked.ime=00:00:22.83 bitrate=3839.0kbits/s    
Broken file, keyframe not correctly marked.ime=00:00:29.91 bitrate=3976.3kbits/s    
[ogg @ 0xae943a0] Broken file, keyframe not correctly marked.
Broken file, keyframe not correctly marked.ime=00:00:36.17 bitrate=4089.0kbits/s    
Broken file, keyframe not correctly marked.ime=00:00:42.44 bitrate=4197.2kbits/s    
[avi @ 0xb0b9660] Application provided invalid, non monotonically increasing dts to muxer in stream 1: 1727 >= 1727
av_interleaved_write_frame(): Invalid argument

Can anyone help me

[ron999]

Can anyone help me

[avi @ 0xb0b9660] Application provided invalid, non monotonically increasing dts to muxer in stream 1: 1727 >= 1727
av_interleaved_write_frame(): Invalid argument

This "monotonically" seems to be a bug with latest version of FFmpeg.
Try with .mp4 istead of .avi

Hi
I've converted the ogv file using MEncoder and FFmpeg.
The new files don't play so well on my system, probably because they are 1216x720 and only a few seconds long.
But the video quality is good, not pixelated as in your original screenshot.
Your new FFmpeg will probably be OK when using .mp4.(or .mkv)
And possibly your MEncoder is too old.

mencoder original.ogv -o new_mencoder.avi -oac mp3lame -lameopts fast:preset=standard -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=4000

ffmpeg -i original.ogv -vcodec mpeg4 -qscale 3 -acodec libmp3lame -aq 4 new_ffmpeg.mp4

[gishaust]

ffmpeg -i original.ogv -vcodec mpeg4 -qscale 3 -acodec libmp3lame -aq 4 new_ffmpeg.mp4 now works thanks

However on my windows machine it will not play except in VLC in the windows media player I get perfect picture but no sound. Is it the way I am encoding it?

[ron999]

...