Hi-Def Video Renders at 1/2 Speed ;(

FlashPast wrote on 5/25/2009, 7:50 AM
Greetings,

I am rendering video input from a Canon HV20 and audio recorded separately with a small hand-held Olympus recorder. I align the audio track profiles and when I can hear no echo or lisp, I eliminate the weaker camera audio track. When the files are rendered (full .avi, uncompressed for alpha-keying), the video plays at 1/2 speed. The audio breezes ahead at normal speeds, however. This does not happen with standard DV, only HDV. Problem is, I need the HVD to successfully alpha-key.

Would someone be so kind as to tell me (Please;) what I am (not)/doing to cause this to happen? The rendering process takes no longer than with standard DV (I am only recording 20 - 30 second walk-outs).

I have a second issue (minor) in that my computer "recognizes" the HV20 by presenting a dialog box with choices in which to open the camcorder (Vegas is not one of them), but it does not show up in my Windows Explorer folder tree. I would expect to see it adjacent to my other external devices. As Vegas does not see my Canon HV, I can not capture directly. As such, I capture in Windows Video and then import the captured file. This might be the problem, but I have no idea of how to open Vegas' eyes. I might also add that everything appears correct on the time line before I render.

I am running Vegas Platinum 9.0 (b) on a Vista 32 bit, Intel Quad-Core, Gateway desktop with 4 gig RAM. According to my Device manager, the Canon driver is the latest.

Short of slowing down the audio track and giving my clients Valium before they watch, are there any better suggestions out there?

Thanks - Baran

Comments

Streamworks Audio wrote on 5/25/2009, 2:37 PM
Are you trying to playback Uncompressed HD video - that is what's playing at half speed? Which player are you using? Uncompressed Full HD (RGB - 1920x1080) at 30fps is like roughly 1500Mbps!! That would be a lot of data for your computer to process - never mind have the HDD of you machine trying to spit that up in real time.

Chris