how to get good compression with xvid

[buachille]

Hi,

I have lots of avi files i have made of my family.

they are huge. like 1.5 gig for a 10 minute video.

i know that you can get great compression with xvid but i can't seem to get it right. I've been searching this site but i haven't found what i need. i've found lots about converting from one format to another, but nothing about taking an uncompressed avi and shrinking it down with xvid.

i've just compressed a video with xvid using virtual dub and i've got the usual result. it took the size down to about half the previous, but whenever anybody moves in the video there are lines that show across the screen where the movement is taking place.

i've seen xvid videos that would have been about 10gig if they were uncompressed, and they are only about 700 meg. How do you do this????

i would love to know.

please help

[Baldrick]

Sounds like the source is interlaced, www.100fps.com . Add a deinterlace filter in virtualdub, video->filters.

Or use something like AutoGK, very easy to use and good quality.

[mats.hogberg]

That's interlace lines you see. either deinterlace, or play back on TV (where interlace lines magically disappear).

/Mats

[buachille]

i can't thank you both enough.

and...................
after i posted that i was doing some more reading and people kept talking about auto gordian knot (which i got from this site a while back) for converting dvds.

i decided to try to open one of these avi's in agk and lo and behold it looked like i could convert to xvid. so i did it. i told it to bring my 1.5 gig microsoft dv avi down to 200 meg and it did it. and the quality is excellent. i am really really pleased.

what i'd like to know is - how much smaller do you think i could have told this 1.5gig avi to go and still retained this great quality????

baldrick - that 100fps link looks like just what i need and i'm bookmarking it.

also, i had no idea about interlacing until now so thanks for the tip. i always wondered what these lines were.

thanks again

[buachille]

one other thing. i don't seem to have any interlace lines on these videos i'm now converting to xvid. does agk automatically de-interlace??

[Baldrick]

yep, autogk automagically deinterlace.

[buachille]

dammit.

2 of the vids i just converted have the sound massively out of synch with the video. lag must be about 4 - 5 seconds.

what causes this. i've seen it before on xvid videos. and how do you prevent it.