Major Quality Problems Rendering MP4's

Jeff Cooper wrote on 1/14/2010, 7:34 AM

Hey Folks,

I'm experiencing SEVERE quality problems when rendering MP4's. I get major blurring and pixelation. I am required to create the videos I'm making in avi format and I also have to provide an MP4 version for the company I'm contracting with.

The settings I'm using when rendering the MP4's are Main Concept AVC/ACC - 620 x 480 - Best - Variable Bit Rate 768,000.

Does anyone know if there are other settings I can adjust to improve the quality?

Thanks, Jeff

Comments

24Peter wrote on 1/14/2010, 7:43 AM

I set field order to none (progressive) whether my source material is interlaced or not. That seems to help. Two passes also improve quality quite a bit. Also - the bps you mention - is that max or avg?

musicvid10 wrote on 1/14/2010, 7:45 AM

That is a low resolution, low bitrate setting for iPods.

What is your original media?
What is your intended use?

Jeff Cooper wrote on 1/14/2010, 8:03 AM

Original Media is avi DV Widescreen.

Final product has to be avi DV Widescreen and MP4 640 x 480 H.264 codec.

Jeff Cooper wrote on 1/14/2010, 8:05 AM

What do you mean by "making two passes?

The bit rate 780,000 was max. I've tried increasing to 20 million, but it doesn't seem to help much....

daryl wrote on 1/14/2010, 8:09 AM

I have had better luck with Sony instead of Main Concept mp4s. Might be worth a try.

Jeff Cooper wrote on 1/14/2010, 8:21 AM

I have to use the Main Concept because it has the required H.264 codec....

Anyway, I just tried increasing the bit rate to 50 million and I'm getting a much better image with that setting.

Thanks for all the help! Looks like I just needed a higher bit rate...

Cheers, Jeff