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View Full Version : Chopping a large AVI to smaller pieces -- Losing quality.

Ganjasaurus
7th January 2004, 07:36
Hi all.

I have a 50 gig AVI which I have to chop down into a few smaller AVI files but while doing this in Vegas Video, it is losing picture quality. Is there anything that will chop AVI's w/out losing quality? I am used to capturing from DV and chopping (with Vegas video) and there is usually no loss in quality. But with these AVI's ripped from DVD I see a noticable difference. I know Vegas isnt the best program out there but for what im doing it works just fine. Until this i guess. But im wondering if im compressing it somehow in the settings.

I do notice that if I choose "uncompressed" in the settings the quality is much better (almost perfect) but there are these horizontal lines wherever there is motion. Anyone know what that is? Please help me, I just need to chop these AVI's up so I can have the smaller AVI's batched into WMV's and MPEGS.

ICQ me if you got a minute to give me a hand. 60946828. Willing to pay for help if you think you can help me.
ppera2
7th January 2004, 12:36
Virtual Dub can split or chop very well. Just set it to Direct Stream Copy.
However, I had problems with very large files in V Dub. Don't know is last version 1.5.8 corrected that problems.
shevegen
7th January 2004, 13:16
http://www.virtualdub.org/

Last version: v1.5.10 (18160)

It would be nice to have a quality comparison done by an experienced user, so that we other people could measure if there is any real quality loss, and if so, if its acceptable.
ppera2
7th January 2004, 15:43
Originally posted by shevegen

It would be nice to have a quality comparison done by an experienced user, so that we other people could measure if there is any real quality loss, and if so, if its acceptable.

There is no need for any quality comparison by direct stream copy. Since no any recompression/transformation made, quality remains same.
If AVI is made with codec like DV, without delta frames, you may cut easy at any frame. It stays for diverse Mjpeg codecs too.

Only thing what may be important is how useful is a programm.
Ganjasaurus
7th January 2004, 18:57
Thanks for the input people!!! :)