I am quite new to after effects. So I have started working on college project I have filmed some footage then uploaded first video in to after effect I there was I lag when I was playing only one video. Ovbiously they have continued when I uploaded more. At the end when I tryed to render my file size was 1gb when video was only 45s and even then when I played on my player there was a lag. What's the problem with the software and how to render a video without enormous size of it.
P.S I have wachet tutorial how to render a videos but I get a same resault.
Just few PC details : i5; 8gb Ram; Nvidia GTX 550 Ti
I am using CS6
You're using the wrong application for video editing. DO NOT use After Effects for editing. It's designed for other things.
There are many video editing applications available: Adobe's Premiere Pro, Sony's Vegas, Avid, and Apple's Final Cut Pro, just to name a few.
There are also many, many consumer-oriented video editing applications which work well for a lot of people.
As Dave said, you are using the wrong app for "editing". little to nothing in AE is realtime, even with fast previews and all the bells and whistles of hardware acceleration. Your journey starts here: