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MPEG2 rendering times increased in Vegas8
I’m using Vegas8a and I’ve noticed that the mpeg2 rendering times have increased a lot over 7. This machine has a an e6600 and would normally render mpeg2 files in Vegas 7 a little bit over real time. A 10 minute project would normally take around 13 minutes to render, but will now take about 20. Only thing I found in the forums was an old mention about having 32 bit processing enabled, which I guess doesn’t apply since this is in 32bit Windows XP do everything is 32 bit?
I don’t know, any suggestions or things I should check? There aren’t any other programs running that shouldn’t be, and nothing else has been installed since vegas 8.
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11 Replies
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Apples and apples? Same project in both versions? Same effects etc?
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Sorry I should have mentioned this. Yes, I was doing a project in 7 that I finished and rendered out to dvd architect ntsc mpeg2, then after I had switched to Vegas 8 the client had me swap out one still photo for another and rerender. Even before I had that project to compare (which consisted mainly of jpeg’s with crossfades between them,) I noticed it taking a long time to render mpeg’s from simple projects with raw footage trimmed down and audio edited. But of course I render the audio out separately as AC3.
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Notice any difference if project set to 8 bit instead of 32?
Regards
Mahesh
https://www.crestvideo.co.uk -
Only thing I found in the forums was an old mention about having 32 bit processing enabled, which I guess doesn’t apply since this is in 32bit Windows XP do everything is 32 bit?
The 32 bit aspect of XP is a different issue than the 32 bit aspect of your video. If you change your project properties to use 32 bit pixel depth in you video, your rendering times will go up. Significantly. Have you set your project to use 32 bit video?
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Since the best acquisition from the camera source is 10 bit video – what is gained by 32 bit video? How is that delivered?
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What 10 bit camera do you have?
32 bit floating allows for greater precision in color, dissolves, and other processes. The greatest immediate difference is seen when working with gradients/gradual color such as a sky. The banding which is very prevalent in DV particularly, but also in high compression formats effectively disappears with 32bit float. The end delivery is still 8 bit video, but like anything else, the better the editing/post quality, acquisition source, etc…the better the final product.
You’ll also notice significantly better glows, light rays, etc. with 32bit processing.
HDV, XDCAM, XV color, AVCHD all benefit from 32bit, but DV’s primary benefit is that the banding we all despise will disappear.Douglas Spotted Eagle
VASSTCertified Sony Vegas Trainer
Aerial Camera/Instructor -
What 10 bit camera do you have?
32 bit floating allows for greater precision in color, dissolves, and other processes. The greatest immediate difference is seen when working with gradients/gradual color such as a sky. The banding which is very prevalent in DV particularly, but also in high compression formats effectively disappears with 32bit float. The end delivery is still 8 bit video, but like anything else, the better the editing/post quality, acquisition source, etc…the better the final product.
You’ll also notice significantly better glows, light rays, etc. with 32bit processing.
HDV, XDCAM, XV color, AVCHD all benefit from 32bit, but DV’s primary benefit is that the banding we all despise will disappear.Douglas Spotted Eagle
VASSTCertified Sony Vegas Trainer
Aerial Camera/Instructor -
DV is 8 bit, yes?
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Most formats, including DV and HDCAM, are 8 bit.
Douglas Spotted Eagle
VASSTCertified Sony Vegas Trainer
Aerial Camera/Instructor -
Thanks for the clarification, but no I never changed anything to 32 bit and I see in properties that it is still on 8. I think what I might do is just keep using 7, and if I find that I really need ProType for a project I’ll just switch over to 8 for that project. I haven’t really noticed any other benefits in my daily editing over 7.
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