Performance Concerns at DVinfo.net

Mickey Howell · March 11th, 2011, 05:23 PM

Just got a camera HMC-150 and am trying it out for the first time.

Here is my system:

asus p6x58d-e
windows 7 64bit
24 gig ram
i7 950
GTX-470 latest drivers
antec 1000 watt power supply
5 1t Western Digital Black Caviar Drives

Scratch Disks:
Video: Drive G - RAID 0
Captured Audio: Drive D
Video Previews: Drive G - RAID 0
Audio Previews: Drive D

Test clip: 1080p 30frame and 720p 60

I put the clip on the timeline and it plays fine although on occasion there is a little skip.
If I put a 2 second dissolve between clips it really stutters and slows way down.

Any tips?

Pete Bauer · March 11th, 2011, 05:44 PM

Have you ensured that GPU hardware acceleration is enabled, and which type of dissolve? A dissolve takes a lot of processing since most or all (depending on which particular dissolve it is) pixels on each frame of the transition require calculation, so GPU acceleration makes a huge difference for those that are enabled.

Mickey Howell · March 11th, 2011, 06:13 PM

I think I found the problem. As a test, what I did was to import 1 clip. I then cut the clip in half and connected the two clips back together with a dissolve. Seems to be an issue when you do that.

No problem when using 2 separate clips.

phew!

Robert Young · March 12th, 2011, 01:30 AM

Mickey
Keep in mind that this sort of thing is only a previewing nusiance.
It has no impact on the image quality of the final output render for delivery- BR, DVD, Web, etc.
When I run into a glitchy preview, if it irritates me enough I will just render the preview, or you can reduce the preview resolution to 1/2 and reduce the system demands.
MPE hardware acceleration helps a lot, as Pete mentioned.
Also, under Preferences>Memory- make sure that around 19GB of RAM is assigned to PPro, and that rendering optomization is set for performance.
With your system, CS5 should run fast and smooth :)

March 11th, 2011, 05:23 PM	#1
Mickey Howell New Boot Join Date: Feb 2003 Location: Kalamazoo, MI Posts: 10	Performance Concerns Just got a camera HMC-150 and am trying it out for the first time. Here is my system: asus p6x58d-e windows 7 64bit 24 gig ram i7 950 GTX-470 latest drivers antec 1000 watt power supply 5 1t Western Digital Black Caviar Drives Scratch Disks: Video: Drive G - RAID 0 Captured Audio: Drive D Video Previews: Drive G - RAID 0 Audio Previews: Drive D Test clip: 1080p 30frame and 720p 60 I put the clip on the timeline and it plays fine although on occasion there is a little skip. If I put a 2 second dissolve between clips it really stutters and slows way down. Any tips?

March 11th, 2011, 05:44 PM	#2
Pete Bauer Wrangler Join Date: May 2003 Location: Eagle River, AK Posts: 4,100	Re: Performance Concerns Have you ensured that GPU hardware acceleration is enabled, and which type of dissolve? A dissolve takes a lot of processing since most or all (depending on which particular dissolve it is) pixels on each frame of the transition require calculation, so GPU acceleration makes a huge difference for those that are enabled. __________________ Pete Bauer The most beautiful thing we can experience is the mysterious. It is the source of all true art and science. Albert Einstein Trying to solve a DV mystery? You may find the answer behind the SEARCH function ... or be able to join a discussion already in progress!

March 11th, 2011, 06:13 PM	#3
Mickey Howell New Boot Join Date: Feb 2003 Location: Kalamazoo, MI Posts: 10	Re: Performance Concerns I think I found the problem. As a test, what I did was to import 1 clip. I then cut the clip in half and connected the two clips back together with a dissolve. Seems to be an issue when you do that. No problem when using 2 separate clips. phew!

March 12th, 2011, 01:30 AM	#4
Robert Young Trustee Join Date: Mar 2005 Location: Coronado Island Posts: 1,472	Re: Performance Concerns Mickey Keep in mind that this sort of thing is only a previewing nusiance. It has no impact on the image quality of the final output render for delivery- BR, DVD, Web, etc. When I run into a glitchy preview, if it irritates me enough I will just render the preview, or you can reduce the preview resolution to 1/2 and reduce the system demands. MPE hardware acceleration helps a lot, as Pete mentioned. Also, under Preferences>Memory- make sure that around 19GB of RAM is assigned to PPro, and that rendering optomization is set for performance. With your system, CS5 should run fast and smooth :) __________________ Bob