Rendering to QT uncompressed is sloooooow at DVinfo.net

Go Back   DV Info Net > Windows / PC Post Production Solutions > What Happens in Vegas...

What Happens in Vegas...
...stays in Vegas! This PC-based editing app is a safe bet with these tips.


Reply
 
Thread Tools Search this Thread
Old October 25th, 2009, 01:03 PM   #1
Major Player
 
Join Date: Sep 2006
Location: Quebec, Canada
Posts: 211
Rendering to QT uncompressed is sloooooow

Hi all,

I got a brand new I7 based laptop with 6 gig of ram, on a Vista Ultimate x64. I am running 9.0 64 bit edition.

What I am trying to do is render out an HDV project in 1440x1080 to a 720p resolution in QT uncompressed. I will then drop that into Squeeze and create FLV's.

I tried to render the entire 14 min project to the QT file but the process got stuck at about 75%. It would then slowly advance one increment at a time and between advances it will take a looooong time.

Now two weeks ago I attempted the same type of render on my XP machine but that was not HDV to 720p it was a RED 4K project rendered out to 720p and that went fine.

My memory allocation is 512, 14 thread (out of 16) and preview is off.

Any suggestions...?

Thanks,

Phil

***** Edit *****

I just did a test rendering out to 720p in WMV and it took less than 10 minutes.... I cancelled the QT attempts around the 1 hour mark and Vegas was telling me there would've been another 1 1/2 hour to go...

Last edited by Phil Gosselin; October 25th, 2009 at 01:31 PM. Reason: addendum
Phil Gosselin is offline   Reply With Quote
Old October 25th, 2009, 08:42 PM   #2
Inner Circle
 
Join Date: Sep 2003
Location: Portland, Oregon
Posts: 3,259
Unless you're rendering an intermediate out of Vegas for use on a Mac (or, maybe, linux), QT is almost never the choice. The encoding engine (supplied by Apple) is very slow on a PC, and sometimes doesn't play nice. If you're staying on the one PC, AVI uncompressed at 1440x1080 would be the quality leader.

Best to let squeeze do the resolution change, I think.

Another typical choice would be a high bitrate MP4 (something like ~8mbps) - a fraction of the size of the uncompressed avi, but really high quality. A high-bitrate WMV would come close to this.

In between, maybe avi/lagarith.

Or, avi/Cineform can be excellent (if you have Neoscene and squeeze sees the Cineform codec).
__________________
30 years of pro media production. Vegas user since 1.0. Webcaster since 1997. Freelancer since 2000. College instructor since 2001.
Seth Bloombaum is offline   Reply With Quote
Old October 26th, 2009, 02:44 PM   #3
Major Player
 
Join Date: Sep 2006
Location: Quebec, Canada
Posts: 211
Hi Seth,

Since the QT engine was so slow I went on to try with WMV, which is exactly what you suggested.

Well at 8mbps it looks pret-ty good.

I don't have Neoscene so I couldn't try it.

As far as my client's needs are concerned the WMV export followed by encoding in FLV through Squeeze will be more than adequate.

Funny thoug that my RED project was able to be rendered flawlessly through the QT engine, not to mention that I jammed it full of Looks effects. It was just a 4 minute project though.

Thanks for sharing,

Phil
Phil Gosselin is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Windows / PC Post Production Solutions > What Happens in Vegas...

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 07:21 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network