Pulsating Pixels on SVCD and VCD Rendered Files

VidJockey wrote on 2/22/2002, 8:45 PM
Hi,
I have been working on doing movie slideshows of some pictures I have taken with my digital camera. Adding in Titles, transitions, and background music. I have rendered the project to Mpeg-2 DVD NTSC and it does beautiful. However, considering I do not have a DVD-R yet, I decided to opt for an SVCD render to burn to a CD. When I render the same project to MPEG-2 SVCD NTSC, the opening title plays excellent, but the first 6 pictures have pixelated areas that seem to pulsate, then on the 7th picture everything plays great. I have also rendered this same project using MPEG-1 VCD NTSC with the same result only not quite as noticable (probably due to the resolution). The original pictures are JPEG 992x760. I have also went back with Adobe Photoshop and resized the pictures down to a 480x480 constraint, thinking that the resizing that was being done was causing the effect. However, I still had the same six pix doing the same thing.

Also tried another project, different pix, same problem. It's almost as if the Main Concept Encoder takes a while to get into sync and then it encodes fine (if that makes any sense). Any help or suggestions would be greatly appreciated!!!!

John

Comments

EArrigotti wrote on 2/23/2002, 1:37 AM
Interlace filter. Check the recent post on this subject.
VidJockey wrote on 2/27/2002, 10:46 PM
Thanks for the tip, I am still getting the same results though. I have noticed that if I remove the generated title from the beginning of the video the encoding works fine... Something about the title screws up the first six or so pictures. Even tried the 3.0a update.. same thing.


Thanks again
liquid324 wrote on 2/28/2002, 11:14 AM
just a thought, i don't know if this will help or not, but in the properties of the mainconcept mpeg-2 (advanced video tab) is a drop down box called dc offset (i think that's what its called). increase that to 10bits. i used that on a low motion video i did and the quality and gitteriness seemed to improve.
VidJockey wrote on 3/10/2002, 11:57 PM
Thanks liquid324. I'll definetely try it!
Cheesehole wrote on 3/11/2002, 2:47 AM
also try adding a median filter to your photos track (try the light preset). this filter is slow, but it helps a lot in reducing the pulsating mpeg2 noise.