JPEG compressor

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JPEG compressor

Postby Bebop0083 » Fri Sep 12, 2003 12:51 pm

i was checking out some different video encoders on one of my programs i use and i found MJPEG compressor and i also found DMO JPEG video compressor. what exactly are those and could they help with character compositing?? a trick im learning very slowly. i almost figured it out but im also trying other ways that could make it easier. so any ideas what those do?? i found them under AVI encoding in the software i was using called Dazzle Movie star 5.
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Postby Tab. » Fri Sep 12, 2003 1:55 pm

have you even read the site's guides??
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Postby Bebop0083 » Fri Sep 12, 2003 3:00 pm

Tab. wrote:have you even read the site's guides??


well it took me a while to find which guide it was under but i finally found it. i may do some tests with it.
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Re: JPEG compressor

Postby SS5_Majin_Bebi » Mon Sep 15, 2003 1:52 am

Bebop0083 wrote:i was checking out some different video encoders on one of my programs i use and i found MJPEG compressor and i also found DMO JPEG video compressor. what exactly are those and could they help with character compositing?? a trick im learning very slowly. i almost figured it out but im also trying other ways that could make it easier. so any ideas what those do?? i found them under AVI encoding in the software i was using called Dazzle Movie star 5.


I don't know much about editing video, besides basic practical crap, but I know that MJPEG codecs are really really good for fast editing. You set the quality really low, edit with the clips you make, then switch out to your AVS files after you finish editing.

MJPEG codecs compress every frame as a separate picture don't they? Intra-frame compression or something, right?
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Re: JPEG compressor

Postby trythil » Mon Sep 15, 2003 7:50 am

Bebop0083 wrote:i was checking out some different video encoders on one of my programs i use and i found MJPEG compressor and i also found DMO JPEG video compressor. what exactly are those and could they help with character compositing??


It's going to look bad unless you do all the masking in one step. The reason why is because, 90% of the time, composites are done as pre-rendered sections.

If you do that then you don't want to work from MJPEG for that section, and should instead get the frames from the higher-quality source. Until there's a tangible way to re-render EVERYTHING from a given source (i.e. not this) you will most likely have to switch out the MJPEG preview files, switch the VOBs (or what have you) back in, render the section you're compositing something into, load that into the compositor, do compositing work, and re-import the composited data back into the editing program.

I needed to insert that jab, since this post reminded me so much of that. Sorry.
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