NVIDA GeForce GT720 - not exactly a really powerhouse video card is it? (especislly for previewing)

CS2014

Senior Contributor Private Message Location: USA-Eastern Time Zone Joined: Sep 16, 2014 16:44 Messages: 629 Offline

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Oct 12, 2015 16:38

I've taken my 'shutter effect/transition/PIP' and made a copy and pasted it into a test project to see the affect it has on the editing. Looks like it has identified a short-coming in my equipment... maybe.

I'll attach my dxdiag(done recently - no changes in equipent since iI did tha tDxdiag) that provides the details but... I'm thinking, is this GT720 just not capable of delivering a smooth appeearing preview in the editing mode in PD13? I am getting very much 'lag' in the visual effect of the shutter opeing and closing when I preview my test project. I burned a sample disc and the DVD plays just fine - no lag - so this makes me suspect my equipment/components not being able to handle so much information to process for previewing.

I think the Dell monitor I have should be able to handle this previewing without too much trouble - but I suspect my video card is just not up to 'snuff' to where I want it to be. Am I reading the DxDiag correctly - Display memory 4018 MB - that is 4GB right? I know it has been mentioned to me in the past that 16GB Video card RAM is a good idea. What about video processor - what spec GHz should I go for there if I want to see smooth previews?

Well, I'm just trying to identify the specifications that I want on my 'next generation' computer. I'd like to edit and preview with little or no glitches and lag. That being said, I'm not usually one for buying the highest end gadget for the sake of having it or for just a little video editing that I do.

THanks,

CS

Filename	DxDiag-10-6-15.txt	Download
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Filesize	59 Kbytes
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PD13 Ultimate - Build 3516, WIN 8.1, 64 Bit, 16G RAM, Intel Core i5 4460, CPU @ 3.2GHz, NVIDIA GeForce GT720, Graphics Memory(total avail.)-4093MB
LG WH14NS40 Blu-Ray Drive

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tomasc

Senior Contributor Private Message Joined: Aug 25, 2011 12:33 Messages: 6362 Offline

Oct 12, 2015 17:10

You have done well with that 'shutter effect/transition/PIP'. Did not know that you have any problems. Try changing the preview resolution to normal to see if it helps. Your pc is okay as is. Most users working with HD have an i7 for a better video editing experience.

Your video card has 2GB of video memory. The other 2GB is shared with the pc ram of 8 GB. You change that in the bios. The card itself is not what HD video editors would like to use. The passmark is here: http://www.videocardbenchmark.net/gpu.php?gpu=GeForce+GT+720 .

The SD and 720p videos shouls edit smoothly on your pc as long as you don't use too many video tracks. I am not aware of any consumer video cards with 16GB of video ram. You were probably reading about the workstation graphic cards.

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optodata

Senior Contributor Private Message Location: California, USA Joined: Sep 16, 2011 16:04 Messages: 8394 Offline

Oct 12, 2015 20:26

I agree with tomasc on the shutter effect, and I actually think you've confused the 16GB of system RAM spec with dedicated GPU RAM. 2GB - 4GB is really where most decent cards are at.

While a new GPU can definitely help with producing if you choose to use the hardware acceleration, it won't be able to help much when previewing.

The two standard approaches for working with big/complex projects are to lower the preview resolution or to use shadow files, and each have their benefits and drawbacks, and each of which have many posts on the forum.

There are two additional techniques that can help with specific "densely edited" areas: use non real-time mode if you can work without audio and with the clip basically playing in slow motion; or highlight the difficult section and choose Render Preview. More info about each is on the forum as well.

Hopefully at least one of these will work well for you

This message was edited 2 times. Last update was at Oct 12. 2015 20:28

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CS2014

Senior Contributor Private Message Location: USA-Eastern Time Zone Joined: Sep 16, 2014 16:44 Messages: 629 Offline

Oct 13, 2015 12:45

Thanks guys for the feedback!

I've tried lowering the preview quality and that didn't really help the laggy-ness so much. I'll try with and without shadow files to see if that makes any difference. I have seen a few posts about shadow files and how their creation may or may not affect my situation. So, I'll experiment and see if it has a positive outcome or not.

I'll try non-realtime mode also - I saw this option and didn't try it but.. will now. Will also try to highlight of the section and render idea.

And thanks for straightening me out on the Video RAM issue.

Thanks guys.

CS
PD13 Ultimate - Build 3516, WIN 8.1, 64 Bit, 16G RAM, Intel Core i5 4460, CPU @ 3.2GHz, NVIDIA GeForce GT720, Graphics Memory(total avail.)-4093MB
LG WH14NS40 Blu-Ray Drive

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optodata

Senior Contributor Private Message Location: California, USA Joined: Sep 16, 2011 16:04 Messages: 8394 Offline

Oct 13, 2015 13:02

You're welcome

Using shadow file will definitely help with you situation because PD will be basically working with SD clips for previewing, which means it has to do much less processing to show your edits in real time.

When you turn on SF, be sure to wait until all the little yellow tags on your Media Library clips turn green, and you may need to let it run for some time for that process to finish. About the only way to speed that up is to remove clips from the library that you aren't actually going to use, or maybe that you won't need until later.

Whenever you add a new clip, PD will only have to create one new shadow file at a time.

Once the shadow files are ready, it's very easy to compare the preview performance with and without them. You can turn of SF in preferences and use the full-resolution clips as they are in the timeline, or re-enable SF and PD will automatically swap in the low-res versions. The SF themselves won't be deleted until you manually do that or until after the "Auto delete temp files every: x days" period has passed.

You might even find it useful to normally work with SF but then uncheck them once in a while to see what your edits look like on the full-res clips.

This message was edited 1 time. Last update was at Oct 13. 2015 13:03

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