Low multicore usage, .mov uncompressed render slow

pen2paper wrote on 11/3/2010, 3:02 AM

What to do to reduce rendering time? I assumed 4/8-cores would be 4x faster.

My goal is to save the HDV (1080i) media to hard-drive for later use in an iMac with FCE4. So I think saving in .mov uncompressed will retain the same hi-def quality as if transferring from tape.

In rendering, without any editing/effects or any thing altered from default .mov template, Vegas estimates that for 30min of HDV clips, more than 8hours are required! The task manager shows 8-cores at less than 20% useage each, RAM@2.5GB. Also same for building peaks, low cpu/ram useage.

Comments

Eugenia wrote on 11/3/2010, 3:45 AM

Use Avid DNxHD instead, not uncompressed. It's a free intermediate visually lossless codec that's faster, and creates much smaller files.

pen2paper wrote on 11/3/2010, 3:51 AM

Sounds appealing, would you know if that file format recognized by Final Cut Express.

Also, Eugenia, do you know of any settings I need to adjust for Vegas to maximize the core/ram potential?

pen2paper wrote on 11/3/2010, 4:01 AM

I went this site:
http://www.avid.com/US/industries/workflow/DNxHD-Codec
not sure how to get it free, unless it's just the QT codec you're talking about.

Thanks again.

Eugenia wrote on 11/3/2010, 1:13 PM

Download and install the 2.3.2 version from here on both your PC and Macs you want to use the footage: http://avid.custkb.com/avid/app/selfservice/search.jsp?DocId=372311
Then, you just export via Quicktime, but by selecting the AVid codec from the list on that QT dialog inside Vegas.

The Core potential is tide to the codec. If the en/de/coder is multi-threaded, then more cores will be used. This is why I suggested Avid in the first place. Regarding RAM, 32bit Vegas will use up to 2 GB of RAM.