-
brightness and contrast keyframe bug in CS4??
When working with HD (or SD) footage I apply the brightness and contrast effect then simply make two keyframes ramping the brightness up. I scroll past the frames and it works fine. HOWEVER if I make any adjustments such as moving the two frames, trimming the clip or even adjusting keyframes the thing bugs out and then it becomes stuck on the brightness of the second keyframe. ITS totally weird and I’ve tried investigating all other possibilities such as mpeg vs mov vs avi, HD vs SD its totally weird!
The only clue I have is that once it bugs out I can pull back the beginning of the clip and then scroll around somewhere in the begging and then all of a sudden there is the effect I was looking for! Its as if the keyframes became ghosts and then traveled several seconds earlier in the clip. So I am concerned that it all has something to do with time remapping.
AAAANnny help would be absolutely cherished.
Thanks
Alex
-
3 Replies
-
Yep, time remapping will have some effect on this. if you want to apply key frame based effects to a timeremapped clip then put it into a seq of its own then use the seq as a clip in your edit. add effects to the seq instead of the remapped clip.
– JB
Jon Barrie
aJBprods
http://www.jonbarrie.net -
Thanks for your reply,
However I am now sure its not due to time remapping and pretty convinced my Premiere is bugged.
Reasons:
It still does this with time remapping off.
It does it in a new project.
It does it somewhat randomly. If I trim the beginning of the clip then scroll back and forth a couple times then the entire clip will suddenly switch to having the attribute of the last keyframe.Sometimes instead of having the entire clip solidly take the brightness value of the second keyframe it will flicker on and off and then stay on.
Does this sound like anything you’ve heard? Do you think a premiere re-install will help?
thanks
-
I am running CS4.1 and replicated your situation and found it to work perfectly as expected. If you aren’t running the latest 4.1 update – install it, AME has an update too – get that one also.
If you are running 4.1 I’d say reinstall.
Brightness and Contrast is the effect I am using – it works as expected, moving it trimming it on either end altering the type of animation.
If you are using Auto Contrast that might be causing problems.
– JB
Jon Barrie
aJBprods
http://www.jonbarrie.net
Reply to this Discussion! Login or Sign Up