Difference in size when using two different prograns to convert XVid to DVD

[perfection]

I used procoder 3 to convert a an xvid video to DVD format (PAL 720 x 576 and 25 fps).

Some days ago i tried the trial verions of easy dvd converter and 1 click dvd movie to convert the same xvid video to DVD.

I was surprised to find teht the on-screen display size of the dvd converted using procoder was taller than the dvd movie created using the other two programs (the were the same). All settings were the same including the bitrtes.

How can this be possible?? and which of the sizes is correct

[jagabo]

MPEG uses DAR (display aspect ratio) flags to determine the shape of the displayed picture. Both 4:3 and 16:9 use the same frame size, just the DAR flag is different. One of your files has the wrong DAR flag.

[perfection]

I'm afraid both procoder an the trialware programs had the dispaly aspect ratio set as 4 : 3 and the input avi (xvid) file to be converted was the same.

Even video inspector when analysing the output file of both programs shows no difference in the details

The difference that i am talking about is a few mm of screen size not the noricable differnce that one sees when viewing a 4 : 3 DAR movie compared to a 16 : 9 DAR movie

[jagabo]

The difference that i am talking about is a few mm of screen size not the noricable differnce that one sees when viewing a 4 : 3 DAR movie compared to a 16 : 9 DAR movie

Maybe 8 pixels at the left and right edges of the image?

[perfection]

No i mean the vertical heigh of the movie - up down not left right

[jagabo]

It's hard to speculate what's going on without knowing all the details. Like the frame size of the source Xvid, whether it had DAR or PAR flags set, and the size of the borders you're seeing on the MPEG files. Some caps from VirtualDubMod and GSpot would be helpful too.

One possibility is that the correct frame size wasn't exactly 720x576. Some programs might go ahead and resize 720x576 anyway, others may pad the edges with black borders to fill out the 720x576 frame instead.