CGTalk - Sub frames in Cinema?

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Zoogie

06-05-2003, 02:50 AM

Does Cinema support sub-frames? I am not sure if this would be what its called.
Here is what I want to do.
I have an animation that I want with different camera moves going on. The timing is not locked down.
If I had a 1 sec segment which was in the middle of the animation. which I now want to be 2 sec. (I could scale the keys) but in this case there are other sequences that succeed this and I dont want to mess with them.
So, could I render the 1sec portion at 60frames per second, and effectively get the same as if I had stretched the frames to 2seconds and rendered at 30fps. Or will it just be a case of frame doubling?

I did a test of poses in adjacent frames, Some things seemed to tween in a wierd way , others not. I could not draw a conclusion from my probably flawed tes.

Anybody know? Thanks.

JoelOtron

06-05-2003, 03:09 AM

Get Twixtor

Works Great for this sort of thing (I'm rendering a time stretched movie right now as I type!)

http://www.revisionfx.com/

go to twixtor

JIII

06-05-2003, 03:11 AM

you could do this in most good video editing apps as well.

But internally the plug joel d is talking about looks pretty good (havent used it mind you).

JoelOtron

06-05-2003, 03:13 AM

Twixtor's an After effects plugin--thats what I use it in at least.

Zoogie

06-05-2003, 03:16 AM

Thanks Joel,
Interesting, I looked at Twixtor just last week.
i was thinking how it would save some serious rendering time. BUt was not sure about setup time/reuslts.
How is the motion for computer generated images (mechanical type stuff) .
Some time ago I had looked at it more for video. You know, the 360 camera type effect.
How was the setup time?
Thanks

Zoogie

06-05-2003, 03:18 AM

JIII,
I tried to slow mo some footage in both AE and Vegas, I wasnt too happy with the results. There was some frame blending going on ( Sure I could have turned it off, but it didnt look as good either way. )
I will try again and try the twixtor demo with my footagge to see ifit works

JIII

06-05-2003, 03:19 AM

okay shoot the fool who assumed it was a C4D pulgin with our clicking on the link (i seriously need to get cable to cut down on these mistakes).

JoelOtron

06-05-2003, 03:23 AM

In my case it has been solely for cg rendered clips. Its pretty simple really--I havent gotten into the depths of it yet, and dont know how extensive your needs are, but I apply the plugin to the footage, and just make sure the quality is set to high, set the desired framerate and it pretty much just does it for you.

For me, I am taking footage rendered at 30fps, time- stretching them up to slow down the speed of the footage, and applying twixtor to fill in the tween frames. I am outputting my final to 15fps, but I am still noticing excellent tween frame generation.

The AE frame blending feature is there to use too, but doesnt do that great a job in my opinion.

Zoogie

06-05-2003, 05:11 AM

Thanks Joel,
I will check it out.

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