DV to dvd quality question

[cd090580]

Hi,

Hi have some video which have some pixellations after being encoded to dvd.

My source is a dv avi captured from dv cam and this video was shhoted in a park, so in the background there are lot of trees, grass in the foreground.

After encoding, I notice some compression artifacts in the trees and in the grass.

My target bitrate is average 6500 kbps, max 9000 kbps. Video is encoded interlaced. Bottom field first for the source. End video finished with top field first...strange but plays fine on the tv and computer.

Video is encoded with tmpgenc Xpress 4.0.

What should I change to improve the quality ?

Thanks.

[redwudz]

DV can be particularly hard to encode, especially if shot without a tripod. I suspect your trees and grass may have some movement and a lot of detail, and that, added to some handheld camera shake, really eats up bitrate.

You might try a short representative sample with a high amount of shake and encode at about 9500Kbps CBR and see if that improves it.

Other than that, you can try a 'deshaker' filter and you might get away with a little lower bitrate, such as the 6500 - 9000Kbps you were using: http://www.compression.ru/video/deshaker/index_en.html

For the future, use a tripod and zoom in to try to keep down the unneeded background movement out of the frame as much as possible.

[guns1inger]

6500 is simply too low for lots of moving detail. The thing that eats the most bitrate is whole of image changes. Trees moving in the wind, especially if they fill the frame, will eat bitrate. Hell, cross fades and fades to black require high bitrate to look smooth.