It's probably because you're trying to preview an SD timeline on an HD monitor or TV set. I don't think Vegas does the same kind of resizing that you get when playing a DVD with a software player on an HD monitor. Also, check the options for secondary monitor preview and make sure that deinterlace is not selected, then see if that changes anything for better.

Here is a screenshot:

http://dl.dropbox.com/u/2784051/vegas-issue.png

On the left is the docked preview window set on "Best Full", stretched out to almost the entire screen, on the right is the secondary preview monitor.

On my 9800GT machines, the external preview matches what I see on the left side. Only on my GTS250, do I see the terrible aliasing on the right side.

It might be something with the current Nvidia drivers, if you have the current ones. However, that doesn't look so bad, especially for being a SD footage on an HD timeline, or HD preview monitor. Keep in mind that Vegas doesn't really use any graphics acceleration like media players do.

No, that particular shot is 1440x1080 AVCHD on a 720p timeline.

I think it has to do with DX11, since the 9800GT was a DX10 card.

-Adam

Well you got me fooled. They both look the same to me

Ted

Look at the image at 100%, they hardly look the same. Just look at the high contrast edges, the aliasing on the right is very noticeable.

Uh...I'm fooled as well. At 100% I can tell no difference.

I am interested in this thread because I am about to unpack two Dell U2410s for use with a new system, but my graphics card will be an ATI Radeon HD5830 1GB GDDR5 PCIeTriple Graphics.

I am using an nVidia card now (with older Dell 19" monitors) and do have some intermittent problems with monitor two - which may be the card and not the screen.

Ok guys, I'm very shocked that you can't see the difference, so to ram the point home, I have supplied another example, small selections that should make it obvious. This new Image is at 1024x768.

http://dl.dropbox.com/u/2784051/vegas-issue2.png

Now I wonder how many people have the exact same issue as i do.

-Adam

After your new images I went back and looked at the old. Definitely a problem!

I have no idea other than to suggest you switch the monitor plugs to see if it's the monitor or the card (or the software).

I am very interested in your results.

Ok guys, I'm very shocked that you can't see the difference, so to ram the point home, I have supplied another example, small selections that should make it obvious. This new Image is at 1024x768.

At first, with this new image, I could not see *any* difference ... but then I realized that Windows had shrunk the image to fit my screen. I clicked on the image to expand it to full size .. and then was able to see the difference.

That doesn't just have problems on the edges, that has general degradation all over the image.

Atomic,

I have the same issue using an ATI 4870 dual head setup. It's strange because if I preview video in the media trimmer I get full, smooth playback (usually cutting 720p source). But in the project preview on the 2nd monitor it's scaled down (and yes, for the record I've turned off the "scale to size" and "optimize quality" settings in the 2nd monitor. Using Best/Full always has an aliased (lower quality, scaled back, whatever descriptor you want to use) than the media trimmer.

It's not the end of the world for me, but it's always been odd that, for me at least, the media trimmer playback is brilliant, and the preview trimmer is "blech" (a technical term used in my shop a lot).

I'm almost certain that the problem lies in a DirectX function call. My 9800GT card is a DX10 part, while the GTS250 is a DX11 part.

As for the preview window, that was exactly what I was showing on my screenshot. The preview window stretched, on best full, is what SHOULD be rendered on the secondary monitor, not the aliased mess I now see.

Just to let everyone know, I did pay the $99 to get the 60 days of REAL TECHNICAL SUPPORT, from a real, live, English-speaking American. After going through the usual things with him, I was able to convince him to submit a trouble ticket to the development team.

I'm waiting to hear back from him, but I assure you, this incident will be determining, very quickly, whether or not I will be stay with Vegas as our main production platform.

Any more reports would be helpful, since I will be submitting this thread to the ticket with the engineers.

-Adam

a) I could see what you were talking about in the original screenshots.

b) The Preview window and the Secondary Preview are not the same. The Secondary Monitor does seem to use the GPU to do certain things such as de-interlacing. It MAY also do scaling. As you've kind of hinted the problem is quite likely in the graphics card or its drivers or how they're setup up. Are you able to enable AntiAliasing on that card because that's what the problem is and that's what should fix it.

Bob.

Bob,

I spent about an hour futzing with the nvidia control panel settings already, including "maxing out" all of the settings.

Also, many people overlook that DirectX is a package of API's, more than just 3d, and includes API's such as DirectShow. But, yes, somewhere in the mix here is some type of misbehavior between DX10 and DX11 video cards, I assume. The question is, which behavior was actually intended???? The DX10 cards, like my GT 9800 is NOT aliased, and looks FAR FAR superior than my DX11, GTS250, aliased secondary monitor.

-Adam

Just so we know - If your secondary monitor is a flat panel then the signal must be de-interlaced. There is a setting under options/preferences/preview device in VP9 to set this parameter and others, such as scaling to your monitor's size. Also make sure your video card is not interfering with these settings, I mean it may be better for you if you can set your video card to take care of these settings . . .

You might do better taking this problem to a nVidia forum or some such.
I've always bought the FX series of cards because nVidia claim these are built for graphics and video professionals and they certainly cost more. I've never really been able to decide if I'm paying for bragging rights or some real benefit. Maybe the quality of the AA has something to do with it.

Bob.

Try changing the anti aliasing setting in the Nvidia control panel to X4. You may have it set TOO HIGH. Seems counter intuitive, but try it.

John

I'm waiting to hear back from him, but I assure you, this incident will be determining, very quickly, whether or not I will be stay with Vegas as our main production platform.

It's interesting that this would be a deal breaker for any Vegas user. I can see how many of the other more real problems that Vegas has can be, such as several bugs, a poor AVC export module, or even the secondary monitor preview not displaying interlaced video as it should, but seeing your two screenshots, I can barely tell that the aliasing is there. In fact, if I could get Vegas to display interlaced video in my TV set properly and not as poorly as it does (showing the two fields at the same time), I'd be more than happy. To me, that's the deal breaker.

I've tried every setting in the nvidia control panel. No change.

-Adam

In fact, if I could get Vegas to display interlaced video in my TV set properly and not as poorly as it does (showing the two fields at the same time), I'd be more than happy. To me, that's the deal breaker.
Isn't that the correct way?