DivX?

[AdrianKwok]

How come DivX .avi files are so bad quality? I mean I downloaded over 4 60meg DivX movies, and they are all blurry...

But when I download a Mpeg file, although its bigger, the quality is amazing..

So how come DivX is so bad?

[willem]

It's difficult to compare these two. As with MPEGs you can specify a bitrate on both video and audio when making DivX films. The person that created the DivX film you've downloaded may have chosen to use a low bitrate so the DivX would fit on a CD or it would take less time to download. Loads of action scenes require a higher bitrate then scenes with little action and camera movement.
Another reason might be the sourcematerial. Maybe you compare (S)VCD's created from DVD's whereas the DivX you've downloaded comes from a rented VHS tape that has seen the interior of at least 100 VCR's.
My experience is that 650MByte DivX's and bigger usualy are of good quality and make a good source for creating VCD's.

[Braindrain]

The .avi files might be cams.

[AdrianKwok]

No, i was downloading some Simpson's movies and i found this 120 meg (22 mins) mpg file and it was very good quality, compared to the divx .avi's i found at 50 megs( 22 mins)

[condone]

DivX was SPECIFICALLY made for DVD rips. Although usually it looks good on TVRips, its purpose was for DVD. As for the filesize...20 mins for a 50mb TVrip means it is a LOW bitrate, hence worse quality. I have some TV eps that are about 20 mins, and are DivX encodes, but they are 100mb each. This is b/c they use a HIGHER bitrate, meaning better quality and larger filsize. For TVRips though, i recommend sticking with MPEG. Keep in mind... the larger the bitrate, the better it would look. Like those DivX encoded VCDs would look exactly the same if u used the same bitrate as the MPEG it came from (or close to it) but the reason they look so bad is b/c they drastically reduce the bitrate. hope that answers your question and others about similar quality issues.