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preview render vs. export render
I have been using premiere for many years in the NTSC realm. I am now moving up to HD (1280 x 720p) and would like to know why a timeline that has all preview files showing green takes a VERY long time to export to .avi files. The issue is, the timelines need to be edited and exported rather quickly as the show director changes visuals. The .avi files are played back using a different (custom) program, otherwise I would just play the timeline back through my Xena card. I am using .avi as my editing standard. Any help or suggestions would be appreciated!
Glen -
2 Replies
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AVI means crap. What if I say I use files on my PC, does that tell you anything? No. AVI is just a wrapper, it is about the codec used within that wrapper.
Harm Millaard
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Glen,
The preview renders are not used when exporting. Instead, the entire timeline gets rendered again. So if you have complex multi-layer sections the export time required can get quite long.
One possible work-around is to “precomp” (to borrow a phrase from AE) the more complex sections. While you are developing the more complex portions use preview renders to see if you’re getting it right. Once you’ve got it properly polished, use the work area to export only the complex section. Be sure to use the “add to project” option. Then edit the precomp on a track above all the constituent layers. this leaves you with real time playback and all the pieces that went into it should you need to make changes. And, the exports will be much faster as it won’t have to do all the calculations involved with combining multiple layers.
As long as you uncheck the recompress option when you do the final export you won’t have any “generational” loss issues.
You might also want to consider changing from the Xena to an Axio card. The Axio can considerably accelerate exports depending on the file types involved.
Dave
Dave Friend
Co-Host Discrete Edit*ors COW
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