According to the Adobe Help it is recommended to do the final encode completely independent of any prior rendering. Nevertheless, Adobe has left you the option (via a check box labeled Use Previews found on the Export Settings page in CS5). The reasoning may be that way too often the pre-rendered files have something different or incomplete in them which may not produce the correct final result. When you preview a timeline the software is expected to display complete frames at the requested rate, such as 30fps. That gives it 33 milliseconds per frame to process all the pixels in the frame for each layer in the timeline. Obviously how long it actually takes to build a frame depends on the number of layers, what is one each layer, the effects applied, cpu speed, etc. While this is going on the software also needs to output the audio at the correct rate. Sometimes the software doesn't finish a frame in 33 milliseconds, and when it is late you see the stuttering effect. Therefore pre-rendering is a good solution for previews, since playing pre-rendered files obviates much of the pixel rendering processing. I'm not sure what you actually did when you say "I re-encoded it." but it may have something to do with what is explained above. Lee From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Thursday, June 23, 2011 11:33 PM To: [email protected] Subject: [AP] Pre-rendering Greetings all,
Quick question about pre-rendering. Is it best to pre-render a video before you do the actual encode or does it really matter since the computer is crunching all this video anyway? I have done a couple short 5 minute videos from DVD footage and I get some glitches as the audio catches up to the video. On the latest one that I noticed this on I re-encoded it using the same exact method and it was much better. I don't have anything else running that might have cased problems. Maybe this second encoding acted as a pre-render? if you know what I mean. -Roger "Doctor Xombie" www.DOCTORXOMBIE.com Check out my latest horror host video on YouTube: http://www.youtube.com/watch?v=SWGNG6M7emw <http://www.youtube.com/watch?v=SWGNG6M7emw&feature=channel_video_title> &feature=channel_video_title [Non-text portions of this message have been removed] ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Adobe-Premiere/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Adobe-Premiere/join (Yahoo! ID required) <*> To change settings via email: [email protected] [email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
