Hi Dave,
Thank you for your detailed response. My apologies for the lack of info…..let me fill you in.
I’m running the latest AE CS5 on a 2.8 i7 iMac. The comp is at 25fps in 1920×1080 res. I’m just using Trapcode Particular / Video Copilot’s ‘Optical Flares’ plug-in and a few PNG files which are being animated. There is no captured live action footage used at all.
There are a few proxy videos in use to ease the processor load. Not sure if this would cause some anomaly. I finished the animation in full and was then onto the process of doing the cinematography on the piece when I ran into the problem.
I’ve got round it by getting my various shots and bouncing them out separately to then edit together in FCP. I actually wouldn’t have used this method and so wouldn’t have achieved a few more subtitles to the piece which I really like. So from that perspective, it’s a good thing! 🙂
Am still very curious to know what the problem might be though, as I’m sure it’ll make me swear in the future! 🙂
Many thanks,
Jack