Ligos MPEG and Vegas

PeterMac wrote on 2/14/2002, 6:11 AM
While waiting for the update, which is due at the end of January ;) I've been experimenting with the Ligos thing.
I've captured AVIs from a number of cameras, using both Vegas and Scenalyzer as the capture programs. In all cases this horrible encoder gave this error:
"Encoder failed to decompress AVI video stream....cannot find appropriate video codec..."

Eventually, I rendered from Vegas using the uncompressed mode and setting the audio to 44.1KHz (the goal is a PAL SVCD). This time it worked, but the file sizes...
The original test clip was 22Mb, the uncompressed file was 241Mb(!) and the final mpeg 2Mb

Has anyone got any ideas, or been able to use this program without needing a scratch disk as big as a planet?

-Pete

Comments

wvg wrote on 2/14/2002, 8:21 AM
Regardless what applicaion or codec you use AVI in its natual state is uncompressed and therefore DOES require a great deal of hard drive space. Your "huge" files is actually rather small. I routinely have anywhere from 20-30 GB as a source file. Your finished file of course can be much smaller, especially when making video CD's.
PeterMac wrote on 2/14/2002, 8:33 AM
No, my file was a test clip a few seconds in length.
I was extrapolating a 20 minute movie to be in the order of 55 Gb, based on the space requirements for the little clip.

And what's all this stuff about using AVI in its natural state? Tmpgenc for one can operate on the [compressed] AVI. Ligos must clearly expect to do so as well, or why complain that it couldn't decompress it?

-Pete
wvg wrote on 2/14/2002, 9:49 AM
You're comparing apples and oranges. The better you compose a question the more on target any replies will be. You seemed surprised that AVI takes up so much room. I responded accordingly. VV3 does not use the LIGOS MPEG encoder any more. There are newer codecs developed for DV by SoFo and new codecs from Main Concept for MPEG-1 and MPEG-2.

As far as compressed verses uncompressed AVI, many when possible seem to prefer using uncompressed AVI during the editing/filtering process. You can "operate" on MPEG for that matter... I do it all the time. None the less the PREFERRED editing method is to use raw AVI so no bits are thrown out prior to you doing anything. I know... that may not always be possible. When it is, IMHO that's the way to go.