On Fri, 22 Apr 2005, Nicolas wrote:

> However, I'm worrying about the output size. There's no black border,
> and that's what I want. But the format is quite "special". It's 640x560
> pixels. I'm trying to use those videos in Cinelerra.

        You can't have it both ways ;)

        Either you have a standard frame size with black borders _or_ you
        use a non-standard ("special") frame size and no black borders - there
        really are no other choices.

> As regards to not deinterlacing the video, are you sure that's the best

        I think it is not a good idea simply because it is a 1 way conversion
        (it can not be exactly reversed if you change your mind).  The other
        reason is that eventually the data might end up on a DVD or viewed
        on a regular TV which is an interlaced display. 

> solution? Those videos will be loaded in Cinelerra. Then, the output
> format is Quicktime, which I transcode to .raw and encode with mencoder.

        Then why bother encoding to MPEG-2 in the first place?  It would
        be better to use the input MJPEG .avi file in Cinelerra from the
        very beginning.

        After all that trans/recoding it won't make any difference if the
        data is deinterlaced or not ;(

        Is there a reason you haven't used the MJPEG file with Cinelerra
        in the first place?  I'm fairly certain that Cin* knows how to 
        deal with MJPEG files.

> The final output is intended to be distributed to my friends over the
> internet. They're using Window$, Mac and Linux... Mplayer won't be used
> on lot of computers... :(

        MPlayer runs quite well on my Macs ;)  Even windoze players have 
        deinterlacing capability, don't they?  

        If MPEG-2 is not going to be the distribution format then it is 
        a waste of time (I think) to first encode to MPEG-2, then import
        into another program which will decode the MPEG-2 , export to another
        format, and then have mencoder do an encoding to MPEG-4/divx/whatever.


        Good Luck!

        Cheers,
        Steven Schultz
        



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