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Very slow rendering in Vegas 6; misc quality Q’s
Hi folks!
Somewhat new to this process, I’ve been working on putting some montages together of Fraps recorded game footage, and have been having an issue with Vegas’ rendering speed.
I have a half hour worth of footage. The estimated render time is 24 hours. Now, working with WMM with a short excursion with Premiere, I know that render times for this should not be so astronomical – however – it’s not lying, I left it rendering while I went to work, came home, and the thing was only 33% done.
Some background on this, if I may so provide:
The files I am bringing in I have pre-compressed to DivX format via VirtualDUB. The reason for this is simple – I don’t have the hard drive space to leave uncompressed AVIs on my hard drive for indefinite amounts of time (especially considering a minute of footage is easily a gig of space).
My .veg file is pretty straightforward. Imported compressed DivX clips, imported MP3s, and a bunch of titles with only a couple special effects applied on a couple titles. About as basic a file as you can get. The render time comes as a surprise, as I put a similar file together in Premiere, and it didn’t take as long (but I’ve had nothing but problems with it, and wish to stay Vegas).
Another question if I can so indulge: thus far, the current compression of the files is pretty much the quality I want it at. I had lots of problems with Premiere in that it would slaughter my movie come render time (I got some crazy screenshots of “alternate realities” it created with my movies). I finally came across Vegas and it’s doing a pretty good job working with these compressed files – though, it could be somewhat better. The output quality of a render has a little bit of extra dithering to it – it sort of looks like the result of something compressed being recompressed. That makes sense, I suppose, considering the fact that with crossfades and titles I’m creating another different movie out of the files, but I was wondering if anyone had any tips to minimize any graphical loss of quality due to compression occuring a second time on a compressed file? Again, hard drive space is finite, so working with uncompressed files would be undesirable.
Any help is appreciated. Thanks guys!
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1 Reply
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I understand your problem with uncompressed AVI and diskspace, but the problem is caused by pre-compressing your stuff with DivX. When you pre-compress it, you make Vegas uncompress it and then re-compress it for the rendering process, this will slow things down tremendously.
The solution should simple, but it will require a lot more diskspace than the compressed DivX files. Do not convert your Fraps stuff to highly compressed DivX, convert it to only slightly compressed DV-AVI. This will take a lot more space than your DivX, but it will make the rendering process significantly faster.
Going through the intermediary DV-AVI rather than DivX will also solve your artifacts problem.
Editing and re-encoding highly compressed video like DivX simply is a Bad IdeaTM.
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Terje A. Bergesen
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