Filters only

[fmbdvd]

Hi, I have a lot of movies done with autogk, avi container and xvid codec. I just want to apply filters up to change the level of the colors and other parameter of the images. I've tried with virtualdub but, selecting no compression, starting from a 15Mb file i have an end file of 615Mb. Could someone help me?

[Skelsgard]

No compression means no codec used: hence, uncompressed AVI. When you open the file in any editor, it must be decoded. As you want to export using "No compression", it´s exported as decoded (uncompressed).
The only way to prevent re-compression is using Direct Stream Copy. It will decode the file for previewing purposes but on export it will bypass any process of the stream (audio or video, depending on what you´ve selected) and will export the stream as it came from the opened file.
But as you want to apply filters to the video, you WILL have to compress the output (therefore, re-compression, as the source was already compressed).
The only lossless filtering that can be done to video (meaning without re-compression) is on the decoder side. For example, ffdshow has advanced tweaking features for video rendering.

Cheers.