Problem with MPEG-1, but not MPEG-2

Storyman wrote on 8/17/2005, 10:54 AM

Just burned a DVD using MPEG-1 and certain scenes suffer from a stop/go motion. Even after re-rendering the stop/go problem occurred at the same location. The shot where the stop/go problem starts is with a zoom in.

The only way to prevent the stop/go motion was to render the project with MPEG-2.

Any ideas on what could be the source of the problem and how to prevent it from happening with MPEG1.

Comments

Chienworks wrote on 8/17/2005, 11:38 AM

Well, you can't burn a DVD using MPEG-1. If you think you did, DVD Architect actually converted it to MPEG-2 while preparing it. This means an MPEG to MPEG render which can mangle video pretty badly.

Another thought is that a zoom in involves a lot of motion in the frame. The entire image changes rapidly. MPEG-1 defaults to lower bitrates than MPEG-2 and there may not have been enough bits to keep up with the motion.

Since you're making a DVD which must be MPEG-2, don't bother rendering in MPEG-1.

Storyman wrote on 8/17/2005, 1:24 PM

Okay, my fault for not being clear.

Using the capture program with Movie Studio 6 Plat. the video was placed on the timeline. After adjusting the start and stop points and adding a title card the Make Movie button was clicked. The option to save to Hard Drive was selected, the MPEG-1 or MPEG-2 was selected as the file type.

Then the file was opened in Architect 3 and then burned to DVD-R. The MPEG-2 worked, the MPEG-1 had areas that would stop/start.

I'm assuming that whe MS renders it does a one pass Constant Bit Rate. A two pass would have most likely taken care of the problem.