Re-encoding some AVI files

[jr_dvd_ripper]

I got some AVI file but they're in difirent resolution (640x352 or 720x400). Now I want to resize all of them into the resolution 640x480 by crooping or padding them without quality loseless. I don't know how to do it and use which software. Can someone help me? (I know very few about video editing so please guide me specifically).


I also notice some DVD_ripping group on the internet compress the dvd very good with the quality same as the hdtv but when i try to rip some dvd the result was very bad. It seemed like they used some filter in virtualdub, is that right?

[Baldrick]

If you crop or padd you must reconvert and you will lose a bit video quality then. If you are just playing the avi on a computer you can use just zoom while you play in players like Media Player Classic.

But if you want to crop use for example virtualdub, load the avi, under video->filters add the null transform filter, click cropping, (or add the resize filter to padd them to 640x480), choose video->compression and select divx codec or xvid codec, choose audio->direct stream copy and last file->save as avi.