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Choppy / laggy render - with solution

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hello,

 

I've experienced a strange problem.

 

I have AE project without any external footage - only AE layers. 25 FPS, 1280x720

 

Old renders (one hour old) of this project to h.264 - they look fine.

 

But now when I render it to h.264, video looks like 15-16 FPS instead of 25

 

but when I render avi losseless video now - everything looks fine

 

when I play old project renders h.264 (one hour old) - they look fine

 

the only difference between now and one hour ago is different value in two audio volume keyframes (but losseless avi looks fine)

 

when I render h.264 now - it looks like 15FPS

 

I've tried to reset comp, reload - the same (looks like 15FPS)

 

I've tried to change bitrate a little bit - the same

 

I've tried to render to wmv - it's ok!

 

I've render to h.264 other composition - it's ok!

 

So what should I do, to be able to render my project to h.264 again?

 

SOLUTION!!!! OK... I've already found a solution - change target bitrate and maximum bitrate to 10, render and then put value you want and render. Crazy....


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