How to improve the quality of an .avi file?

[Annakins]

Hey

I was just wondering if there is any way to improve to quality of an existing .avi file? For example: I have an .avi file of a TV episode that is about 43 min long, but the file is only 100MB and quite bad quality, so is there anything I can do to improve the quality (of course would mean the file'd be bigger) WITHOUT making a VCD or SVCD? I want better quality but I wanna keep it as an .avi file cos they're generally smaller.

Anyone?

A.

[Baldrick]

Please do a search for improve quality in our forum and you will get several of hits, like
http://www.vcdhelp.com/forum/viewtopic.php?t=116885&highlight=improve+quality

[JHebert]

You can't really "add" quality to an avi or mpeg since the original encode has already "thrown away" picture information from the original source. However you could try a few filters in vdub to clean it up a bit.
Your statement about wanting to keep it avi because they're generally smaller - I assume you mean Divx avi - actually avi is just a container format, and depending on the codec (Divx, DV, Huffyuv, etc) avi can be MUCH larger than mpeg files.