smart rendering

singapuree wrote on 12/31/2004, 5:22 AM

I've captured an hours dv video via a pinnacle DV500 and imported the footage into Vegas 5.0b. I've trimmed out some crap and added a fade in and fade out and a couple of cross fades. Saving this out as a PAL DV seems to be rerendering the entire timeline. I thought Vegas was smart enough to just rerender the fades and do a direct stream copy of the rest. It took nearly three hours to save the file!!!

Comments

briggs wrote on 12/31/2004, 6:04 AM

Did you make sure you didn't accidentally move the opacity level on the track header below 100%; or drop the opacity envelope on the event(s)?

-Les

singapuree wrote on 12/31/2004, 6:23 AM

I'm sure I didn't. For the cross fades I just pushed the new event into the end of the existing one to create an automatic cross fade. Then I added the fade in and fade out at the start and end of the timeline by adjusting the "event opacity envelopes". I'm going to try an experiment tonight by splitting the fades sections. Either way this is highly unacceptable as I was saving from DV to DV. In Premier you see a red bar across the sections that need rendering. I don't get any visual feedback in Vegas with regards to so called "dirty areas" i.e. areas that need rendering. I did not apply any bus effects or effects to the whole track. As I said it was a simple two cross fades, a fade in at the start and fade out at the end.

JohnnyRoy wrote on 12/31/2004, 8:13 AM

Was the original footage PAL DV? The Pinnacle DV500 is not OHCI compliant and requires Pinnacle’s proprietary software. Perhaps there is something they are doing during the capture that is making Vegas think its not a compliant DV25 stream? Premiere might use the Pinnacle DV codec when working with this card, which is probably why it doesn’t re-render. (just a guess on my part)

Vegas has never re-rendered any of my DV footage that wasn’t touched. I’ve even reprocessed some of it in VirtualDub using the Panasonic DV codec and Vegas never re-renders. I use a standard OHCI compliant firewire card to transfer my DV footage.

~jr

singapuree wrote on 1/3/2005, 1:49 AM

Actually after version 4.5 of the driver the DV500 is essentially an overly expensive OHCI compliant firwire card. It now uses the standard builtin firewire support of XP. The fourcc code on the avi is vids:dvsd. The Pinnacle codec is the default handler on my system for this codec, however, in Vegas I have switched off third party codec support and am using the builtin DV codec. Thanks for the suggestion nevertheless jr.

-singa

taliesin wrote on 1/3/2005, 2:06 AM

Also you might check the field order of your imported footage. In some cases Vegas doesn't recognize the field order correctly, says it is Upper Field First which does not fit to the project and the render settings then.
Is the field order (checked by right-clicking the clip and choosing the "Media" tab) Lower Field or Upper Field?

PeterWright wrote on 1/3/2005, 2:10 AM

> "after version 4.5 of the driver the DV500 is essentially an overly expensive OHCI compliant firwire card"

Nevertheless, the avi may not be fully standard DV, and that's probably why Vegas needs to render all - easiest solution may be to buy a "proper" OHCI card - they're very cheap - unless there's a better way of making the DV500 totally "vanilla".