S-VCD 480 x 480: Weird Experiences

[Jerry Jones]

Weird. I used the built-in Ligos GoMotion encoder in MEDIASTUDIO PRO to create a 480 x 480 MPEG-2 test clip from a Canopus DV Raptor clip.

Funny---the resulting 480 x 480 MPEG-2 test clip is stretched vertically.

Next, I try bbMPEG. At first, the 480 x 480 seems to be rejected with a "scaling error" message. I defeat the error message by making the pixel height active and typing in 576. Then I type in 480 in the pixel width box. Then I drop the 576 to 480. This time the bbMPEG encoder gives me no scaling error message and I hit the start button.

Cool!! The resulting 480 x 480 clip looks nothing like the one encoded by the Ligos encoder - the aspect ration now resembles a 16:9 DVD movie! Nice resolution. Not bad. Now if only I could test this bbMPEG 480 x 480 clip on an NTSC monitor.

Does anybody know of a cheap hardware board that encodes directly to the 480 x 480 frame size for S-VCD???

[DrMordrid]

Hi Jerry,

If you have access to a Marvel G400 you can set the dualhead to use DVDMax and it'll send whatever MediaPlayer plays to the vidout, regardless of codec or rez.

You might have to change the DVDMax Options from 4:3 to Always Scale to Fill Screen for some driver versions but it'll work.

Neat feature, 'eh?

Dr. Mordrid


[This message has been edited by DrMordrid (edited 11 June 2000).]

[Jerry Jones]

I just figured out why bbMPEG was yielding the letterbox look: It has a default setting of "proportional."

When I change proportional to "fixed," I get the same vertically stretched image produced by the Ligos GoMotion encoder.