Time remaping in After Effects solution,..please

[Daniel Larsson]

First off, I apologize if this is the wrong place to post, I'm new to this, under pressure for deadline and Im dealing with a very frustrating problem that I'd much appreciate help with.

I'm running my composting in AE CS3 using the 4k reference, with the _P reference for proxy and working in quarter resolution.
It works great, my renders are beyond good enough and I know this is not the normal flow but, it's working and it looks good = client happy...

When I time-remap a clip, the exported video looks great, for the first two frames or so, then it gradually lowers exposure/opacity/gamma...or something, ..down to almost complete black.
Rendering the clip in normal speed looks great, no problem.

I tried Open GL render, and exporting in different resolutions, same result:
Normal speed: Fine
Remaped: ...beyond my understanding.

I appreciate all help I can get and I wish there was a way to click a "donate button" for everyone that has helped me in the past.


Cheers,
Daniel Larsson.

[Simon Blackledge]

When you render out or in preview also?

are you slowing down or speeding up?

is frame blending set to FrameMIX or Pixel Motion ?

[Simon Blackledge]

just remapped frame 200>220 to frm 1>150

Red footage using _P.mov

time remapping enabled
Pixel motion selected

rendered fine.

Sure your not remapping backwards to black ?

are your keyframes wonky? ie overshooting the clip duration hence running into black?

sounds like your running out of frames and blending slowly from the footage to black.

s

[Joe Vinson]

If you suspect it's the Quicktime proxies, you could always render the clip you need and replace the footage in AE. But I don't think that's the case.


are your keyframes wonky? ie overshooting the clip duration hence running into black?

sounds like your running out of frames and blending slowly from the footage to black.

That would be my guess too. Zoom in on your timeline and make sure you don't have a couple of real-time frames (including the end of the clip) remapped to much longer.

[Daniel Larsson]

Thanks for all suggestions.
Both speed up and slow down creates the problem.
It only happens in export, not in preview.
I have enough handles(in the middle of a long clip).
Keyframes seem fine just straight linear keys.
Not using frame blending, ...and im not sure where to set the two options mentioned...

Thanks !!!

[Daniel Larsson]

again, ..keyframes are fine. no extra, besides, ..there are no black frames in the clip nor any opacity, exposure changes. another thing that happens is that during this "fade" the video freezes, and after fading almost all the way down, you can see that the video is playing the way it should...but you cant see it, ;)

[Simon Blackledge]

Right click on the layer > Frame Blending > mix or pixel motion.

mix dissolves between frames
pixel tries to recreate new frames..

is this repeatable on a new comp with a new layer?

email me the project and I'll try with my clips..

[Daniel Larsson]

I have found a solution. but i dont like it, ..maybe because I am doing something which cant be done, but, either way, rendering with 8bit project works fine.
16 and 32 creates the problem..
any comments?

/daniel

[Simon Blackledge]

I only tried with 8bits as the proxies are only 8 I think :-/

will try with more when I get into the office.

s

[Daniel Larsson]

Thanks!
The same problem kind of happens inside AE,..
In a comp, when I turn off proxies and go to Full res, I click let's say frame 50, it loads fine. Then the next update, maybe frame 51 or 100 it fades a little bit, like in the render. One more click and so on and the updates fade even more.
Purging the image caches brings back the first good frame, ..then it keeps on acting like this..

[MikeHedge]

how are you working with the proxy in AE? I thought these only played back on a mac in quicktime or FCP

mike

[Daniel Larsson]

how are you working with the proxy in AE? I thought these only played back on a mac in quicktime or FCP

mike

I am on a Mac.
I imported either the R3D file or the _F.mov and point a proxy in after effects to the _P.mov reference.

I find using the R3D files better instead of importing the _F.mov file and set the proxy to _P.
My problems still remains, and Im not happy with the workflow. I cant render, which is the main problem. I get sporadic results, some frames work, some dont. so i have to output stills now. so be careful.