You could also apply a posterizeTime expression to the time remap:

posterizeTime(12.5);
value;

Where 12.5 in this case would be half the comps frame rate and only update the frame count every second frame.
Try it, might sometimes be more elegant than baking animation and using hold keyframes.

Best
Micke Teeling

www.flowcine.com 

Mail: micke@flowcine.com

Phone: +46 70 333 92 11

On Wed, Apr 2, 2014 at 11:47 AM, Tor Martin Norvik <tormartin@tilnaermetlik.no> wrote:

I think you hit the nail Robert, I had a feeling that the interpolation of animated frames vs sequenced images could give some different result regarding to TimeRemapping.
But you was able to spell it out :)

Yes, proxies is also a nice solution. But they should be «permanent» proxies. If AE change from proxies to the «real» comp at render time, the problem would still occur.

Changing keys to hold frames does indeed do the trick!

Thanks!

Tor M


2. apr. 2014 kl. 11:35 skrev Py Fave <pyfave@gmail.com>:

> or use proxies
> it' simpler
>
>
> 2014-04-02 11:06 GMT+02:00 Robert Kjettrup <robert@stvmayday.dk>:
>> Hi
>>
>> i think your problem is that the animated psd is using the native AE PSR
>> keyframes, and AE will automaticly interpolate the animation of those, and
>> that is a very nice feature, but it sound like the other pre-comp you have
>> is a sequence of images, that will ofcourse not be smoothly reinterpolated
>> to a new slower animation, making the 2 comp not to sync up anymore.
>>
>> One solution could be to bake the keyframes of the psd, as you have tried,
>> but after that convert all the keyframes to Hold keyframes so that when you
>> timeremap the master comp the animating psd will jump at the same
>> timeinterval as the image sequence.
>>
>> This can still fail though if you dont timestretch to a slow/speedup with an
>> integer value (x2, x3, x4, or /2, /3, /4) as AE can put keyframes on
>> "subframes" (frame numbers like 5,333) and with an image sequnce AE cant do
>> that but will just take the nearest frame. This can cause some of the frames
>> from the 2 comps to some times be 1 frame out of sync.
>> So keep the timestrech value to 50%, 100%, 200%, 300% etc. and you should be
>> good to go... with an jumpy animation though :-D
>>
>>
>> Maybe i misunderstood you question, then im sorry for the lengthy response
>> :-)
>>
>> Robert
>>
>>
>>
>>
>> 2014-04-02 9:17 GMT+02:00 Tor Martin Norvik <tormartin@tilnaermetlik.no>:
>>
>>> Hi,
>>>
>>> I have followed this list for several years now, what an extraordinary
>>> great resource for After Effects.
>>>
>>> I have something that I am wondering about regarding timeremapping a pre
>>> comp where you have layers with PSR animation.
>>>
>>> If my pre comp is 12 frames long and I want to extend it to be 24, I just
>>> add the necessary time remapping keys. So far so good!
>>> But this offsets some of my animation in the pre comp?
>>>
>>> In my pre comp there are two layers, one is another pre comp with 12
>>> images sequenced after each other and the other layer is a .psd which is
>>> animated and superimposed on the pre comp with sequenced images.
>>>
>>> So:
>>> PreComp A
>>> - Child preComp
>>> - Animated .psd
>>>
>>> If I timeremap PreComp A, the animated .psd does not follow the layers in
>>> Child preComp.
>>>
>>>
>>> I find it a bit hard to describe it in a more elegant way, but please
>>> chime in if you have experienced something similar and found a nice
>>> solution.
>>> I have tried «baking» all keys on the animated .psd, thinking that could
>>> help. But the only solution so far is to render the pre comp A out to a
>>> sequenced .png and TimeRemap it.
>>>
>>>
>>> Regards,
>>> Tor Martin
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> TILNÆRMET LIK AS
>>> pb 1127 Sentrum, 0104 Oslo, Norway
>>> Office: Akersveien 25
>>> Org.nr.: 990 687 536
>>> www.tilnaermetlik.no
>>> tormartin@tilnaermetlik.no
>>> (+47) 913 51 290
>>> twitter: norvik
>>>
>>>
>>>
>>
>
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