Urgent need! Problems with render!
by Fabrizio Rinaldi
on
Jul 17, 2008 at 9:11:18 am
Hi everybody!
I got a MacBook Pro with 2GB of RAM and around 80GB of free space.
The problem is that sometimes when I try to render my composition in the rendered video only the first frame on the shots is rendered, and the tracked shots even move due to the tracking, but always showing first frame only. Even with RAM preview sometimes shots become static.
In Memory and cache I put these values: Maximum usage of memory 120%, Max. Dimension RAM cache 70% and disk cache 3000GB.
How can I optimize memory to let After Effects render my compositions? (ps. I'm workin with 1080p shots for I short, I gotta solve this problem)
Thanks a lot!
Re: Urgent need! Problems with render! by Dave LaRonde on Jul 17, 2008 at 3:57:00 pm
Because it it such a common problem -- especially since you mentioned the magic number "1080" -- I think it's the footage you're using. Read on:
Dave's Stock Answer #1:
If the footage you imported into AE is any kind of the following -- Native HDV, MPEG1, MPEG2, mp4, m2t, H.261 or H.264 -- you need to convert it to a different codec.
These kinds of footage use temporal, or interframe compression. They have keyframes at regular intervals, containing complete frame information. However, the frames in between do NOT have complete information. Interframe codecs toss out duplicated information.
In order to maintain peak rendering efficiency, AE needs complete information for each and every frame. But because these kinds of footage contain only partial information, AE freaks out, resulting in a wide variety of problems.
Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA
Re: Urgent need! Problems with render! by Fabrizio Rinaldi on Jul 17, 2008 at 7:37:35 pm
Thanks a lot for the answer, but I imported my footage with iMovie from a Sony HDR-SR11 and I'm quite sure the codec of the imported shots is Apple Intermediate Codec. However I'm now rendering with Render Queue and the problem seems to be solved.
Other two questions I hope someone will answer :)
What's the best codec for editing in After Effects or for general video editing?
Is there a way to convert without loss of quality a shot from interlaced to progressive?
