[MEncoder-users] mpeg1video

["Dr. Iglói Gábor"]

Jan Knutar wrote:

>On Monday 15 November 2004 21:49, "Dr. Iglói Gábor" wrote:
>  
>
>>How can I encode to a compatible MPEG1 format. If I use:
>>*
>>mencoder* -of mpeg -ovc lavc -lavcopts vcodec=*mpeg1video*:vbitrate=1200 
>>-nosound media.avi -o media.mpg
>>    
>>
>
>You could probably start by removing the asterisks (*) around mpeg1video...
>
>  
>
Oh, I haven't used asterisks of course it's because of a buggy copy 
paste operation :))).

>  
>
>>BTW the source video was 640x480 at 25 DivX5.
>>    
>>
>
>640x480 is not a legal resolution for mpeg1, I think. Also, 1200kbit/s for
>mpeg1video at that res wont be good..
>  
>
OK. So I need to convert avi videos to MPEG-I format, because I'm 
helping in making PowerPoint presentations with some videos. Windoze & 
PPT like this format because they uses the old mci way to play videos 
and for MPEG1 that OS has native builtin support - meaning that you 
don't have to bother installing DivX or other codecs on the target PC 
which is playing the presentations from CD.

In MEncoder, with the above command (no *-s of course:), I can produce 
fine, almost DivX quality mpg files. All fresh installed Windows 
machines play them down. But the problem is that on some computers, the 
playback is jamming a bit. I fired them up on gmplayer and got the video 
packets buffer message from it (and it plays down the movie).

Searching Google I found out that maybe this message is because I encode 
no audio in the mpeg file (-nosound, because I don't need sound and I 
think mencoder doesn't support mp2 audio streams yet). Maybe the 
playback is jammy because MPEG-1 is an interleaved format and other 
players (not mplayer:) expect audio stream too. Avidemux2 says to my 
special mpeg1 files that they need indexing.

Can you help me in this situation? Maybe another linux application that 
can convert (easily) DivX to MPEG-1?