AE doing weird things with footage shot in 60p

[Adriano Moraes]

Hi there!

Since you say you´ve used time remaping I figure this strange blob on the guy’s hand seems to be due to Frame Blending mode set to Pixel Motion(witch I think is the default).

Depending on how much you messed with the speed this FB mode will have a pretty hard time creating the frames in between the existent ones.

Try changing it to Frame Mix. But keep in mind that there´s a limit fot messing about with footage speeds.

I don´t really know much about what you actually did to the footage (slow, fast, ho much %, etc…) but I´ve seen this “weirdness” before while doing some time remaping and I thought I could try to help by sharing my 2 bits.

More on that matter can be found on AE’s help files.

https://help.adobe.com/en_US/aftereffects/cs/using/WS3878526689cb91655866c1103906c6dea-7d43a.html

I hope I was of some help.

Cheers!

[Mitch Hardison]

Thanks for the feedback guys. I have frame blending turned off in AE CS4. I am filming with a jvc hm700u to a card in .mov’s and exporting out of AE to quicktime with no compression and trying to play the video back in quicktime. I tried to play it back in VLC but with the same results. I am using a macbook pro osx. When I render out of AE CS4 i do not chose file>export. I am just adding the comp to the render queue.

[Mitch Hardison]

thanks for being patient with me Dave. I will check it out and get back with you

[Adriano Moraes]

Just another shot in the dark here Mitch though I think your solution is more on Dave’s wise words:

Are you by any chance using OpenGL on your render settings?

This thing can really make your life miserable when working with graphics….I don´t know about footage.

Well. Sorry if I´m saying something stupid but came to my mind.

Cheers and the best of luck!

[Doug Nash]

I’m using CS3, and have routinely avoided using frame blending because the horribly blobby results. Often, I’m using source footage from either Avid DNxHD or ProRes. These don’t have the time/frame issues of things like AVI or the like, correct?

Has Adobe improved upon the frame blending algorithms with CS4 or CS5? I guess it’s an imperfect science. Has anyone found a way to use RSMB to fill in missing frames, without necessarily blurring the inter-frames?

[Doug Nash]

Thanks. In this current case, I’m working with some progressive RED footage, which was transcoded to 29.97p ProRes Codec. I’m doubling the length for semi-slo-mo. Working in 30fps comp, but should that even be an issue for a five-second clip? I think I’m just seeing reasonable limits of what can be faked, inter-frame.

[Doug Nash]

No, the footage was shot at 4K res and 30p. They also shot 120fps, with the highly degraded 2K image.