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renders .png's but mpeg comes out garbage?

Posted: Wed May 16, 2012 9:45 am
by wretch1958
I am trying to render a very low poly zeppelin with rotating prop blades. I am using default render settings I think. When I render the .PNG's they come out fine. When I render MPEG I see mostly good frames but with flashes of noise (whole screen filled with thin colored lines/snow) on the render display screen. When I try to play the MPEG it's all noise (the same colored lines/snow).

What are some tricks to debug a problematic Render to MPEG. I tried rendering only one object at a time by rendering particular layer only, and tried turning off raytracing and anti-aliasing but problem persists.

Posted: Wed May 16, 2012 12:39 pm
by ldo
I would not bother rendering to MPEG—I would stick with a high-quality lossless format like PNG or better, and use a separate tool, like FFmpeg, to do the conversion to MPEG or whatever. This way, you can redo the conversion with different quality/size settings etc, without having to go through the whole render business again.

Use the best tool for each stage in the job.

Posted: Wed Jun 06, 2012 11:20 am
by wretch1958
Thanks "Ido", I had not considered the important points you bring up (keep data at highest quality possible at every stage, can always downgrade). Very new to world of rendering, will try "FFmpeg" as you advise. Thanks again.