Well, this is most definitely not AE's fault. Something is messing up your CoDecs, thus preventing AE from doing its thing. Uninstall all CoDec packs or specific stuff introduced by alternate media players... Also make sure, your H.264 is not being blocked by the firewall or virus scanenr, simpyl because it is registered as a web file type...
Actually I don't have any other codecs installed then Quick time, a part of VLC but as far as I know VLC doesn't install any codecs in the system it comes with its libraries and they work only for VLC. I've checked the Firewall and is not blocking Adobe products, thanks for the hint.
I can confirm that so far it's working fine as long as I use only that file. I'm wondering if any of the other files are corrupted, but that would be strange though, because I can play the other files both in VLC and Quick time.
No problem with Premiere importing and working with all of them.
Ok, fixed. Just needed to install the codecs (using the Shark007 right now). Since AE was importing the H.264 without any problem I assumed I had all that I needed, but the ram preview wasn't working. After having installed the x64 codecs now everything works smooth.
The After Effects CS5 (10.0.1) update is available:
This update address some issues with RAM preview. After you've installed the update, please let us know whether it works for you.
If you have any problems with the update, or if you have bugs to report after you've installed the update, please let us know through the usual channels:
I had the same 2 or more frames problem which appeared when i added a h264 file in - the update fixed it for me, thanks!
I have this problem with my supercomputer and After Effects CS5.... it used to work just fine.
I have an i7-980x, 16 gb RAM, Win 7 home premium, 2 ATI Radeon 5850 each with a gig of video RAM.
I have tried all of the online suggestions, entered a bug report, re-installed AE CS5 (Prod Premium Suite), then updated again.
All I get is the same error report. VERY Frustrating.
Disabled all firewall, antivirus.
Made a little comp of a white box changing position from frame 1 to 200,
Still won't RAM preview.
Got it!!! I've solved the same problem I had!!
You must have been installed some CODEC Pack or something kinda this... JUST REMOVE THEM!! there are some kind of codecs whish make conflict with RAM preview for some reason..
So, folks, don't torture yourself changing your databases or disk caches from one drive to another!! RECALL WAHT CODECS or PLUGINs you have installed these last days! The cause is simple! JUST REMOVE THEM!
Is there ANY work around to this issue? If watched the Video2Brain videos, unhelpful. I purged "inactive memory," I've allocated more and less ram for AE. I move my media cache to external drives and back again. I even reset default AE setting by holding down SHIF+Command+Option (I'm n a MAC) ALL to no avail. I can't work! Is there a work around? I've had this software since its release. Tuesday every file in AE CS5 worked as I expected. No the same file that was working no longer caches ram.
Is there a work around?
The After Effects CS6 (11.0.2) update was just released. It includes many bug fixes and adds some GPUs to the list of those that can be used for GPU acceleration of ray-traced 3D rendering.
Details are here: http://adobe.ly/AE1102
Note that one of the changes is the addition of a new Memory & Multiprocessing preference and an adjustment to memory handling on Mac OS to alleviate the problem seen when getting the message “After Effects error: RAM Preview needs 2 or more frames to playback”.