Pulsing images in two sections of final burn of DVD

[duane]

I am editing with Magix Movie Edit Pro 11, I have xp pro, 3G Intel P4, 2Gb RAM. I export my 3 hour video file to an .mpg at 640X480 and at about 4300 bit rate and I get about a 6G file. I watch it in Media Player and it looks good. I then import it into Ulead Workshop2 to author it.
I add 60 chapters and several pages of menus. Ulead makes the dvd and it overall looks good, EXCEPT during about 20 minutes of the footage, it pulses…noticeably. In Movie Edit Pro I have tried changing the bit rate incrementally, way down to 2600, done top down interlace, bottom down and progressive encoding, Changed to 702X480. I keep getting the pulsing from 00:00 to about 12:00 and a section from 21:00 to 26:00, all most exactly every time. It is not triggered by any chapter breaks, does not stop at a change in footage. I have rendered my brains out for these last two weeks trying to get rid of it. I had another video that is two long and a faint pulsing is at the first 5 minutes, but not enough to cause much distraction. Don’t know if it is MMEP or Ulead, but if I change the file, I will probably lose 3 weeks of editing in sync with the menus. Any settings I could try? or am i DOOMED to split my video into 2 discs?
Thanks all, duane

[dannyp]

Before anything else....

You can't make a single layer DVD with a 6 GB file unless you let
WS do the encoding so maybe this is the cause to the problem you
presented.
In fact it is a bad idea to re encode the Mpegs because you lose quality
left alone the long time it will probably take WS to encode your files so
I think you have two choises:

Burn the project on a Dual Layer DVD or...
Split the movie in to 2 files (with higher bit rate) and burn them on 2
discs.

[Devil]

Or, better, do no editing at all in MPEG, import it as AVI into WS2 and encode into MPEG directly at the most suitable bitrate, with no re-encoding.

[GeorgeW]

I export my 3 hour video file to an .mpg at 640X480 and at about 4300 bit rate and I get about a 6G file.

This resolution is outside the DVD Specs, and so DWS will always re-encode your mpeg files...

What/where are your source videos coming from, and what are their attributes? If you captured them to your computer, what devices did you use to capture/import them to your computer (list all the equipment involved).

One thing to check is whether you are maintaining the same field order throughout your entire process...

Regards,
George