Re: professional video editing on linux?

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On Wed, Jun 12, 2002 at 12:54:52PM -0500, Billy Biggs wrote:
> Joshua N Pritikin (vishnu@xxxxxxxxx):
> > i tried <http://www.mainconcept.com/mainactor.shtml> but it isn't
> > working smoothly enough.  i need to remix MPEG-1 from VCDs and burn
> > custom VCDs.  MainActor is much too slow even my P-3 850MHz.
> 
>   What do you mean by too slow?  You mean that seeking around and
> looking at frames is slow?  How is it slow?  I'm curious.

For example, have a 730M MPEG-1 file from a VCD.  When i try to load
it into mave, it takes about 10 minutes.  Worse, every mouse click or
re-display takes another few minutes.  The software is definitely doing
something wrong.

On a more positive note, i was able to mix two small MPEG-1 tracks
and save the result.  The files were 4M and 1M in size.  So maseq
definitely works to some extent.  

>   One thing to keep in mind that MPEG-1 is compressed video with
> keyframes, and also lack of good timestamps.  For a video editor to work
> correctly with MPEG-1 video directly it would probably have to prescan
> the whole file and mark keyframes for quick access, but decoding would
> still take alot of time.  You might consider trying to dump the video
> maybe to huge uncompressed or RLE-encoded video files and edit with that
> (something like huffyuv), or recompress to a non-keyframe based codec
> like DV (but you'd have problems with the chroma if you're not careful).
> 
>   DV is much easier to edit since seeking is fast and to view a given
> frame you only need to decode that one frame.

i tried that.  Actually i'm not convinced that uncompressed is
*that* much faster.  For example, i am not able to convert the
730M MPEG-1 file because mave is too slow.  The other concern is
disk space.  60 minutes of uncompress DV is really huge.

> > No doubt professional video editing is available for Windows, but i
> > was hoping for a linux solution.
> 
> For kicks you could try Cinelerra
> (http://heroinewarrior.com/cinelerra.php3) but I don't think you should
> get your hopes up.

By the same brilliant people who created "Broadcast 2000"?  Ugh.

-- 
Victory to the Divine Mother!!         after all,
  http://sahajayoga.org                  http://why-compete.org





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