Project Properties

Mike M. wrote on 10/7/2015, 11:26 PM

Every since I started using Vegas, I've been totally baffled by the Project Properties. At one time there was a post here with differing views of how it worked., Dozens of folks here participated in that discussion. Now, I can't find that post.

The manual is completely non-specific on it's use............other than making previews smoother. I know I'm beating this to death, but I can't find anything that indicates that Project Properties affects the way Vegas processes the video.

I'll take any comments or links that will (hopefully) help me get a grasp of "Project Properties" and separately the infamous "Match Media" work.

Reference:
http://www.sonycreativesoftware.com/forums/showmessage.asp?messageID=933113

Mike

Comments

PeterDuke wrote on 10/8/2015, 5:37 AM

By and large, Project Properties defines how the project is handled while you are editing, and does not affect the rendered result. Thus if the project properties are the same as the media, Vegas does not have to recode the video during playback.

The one exception is the deinterlace method. If you have interlaced source and you set the deinterlace method to "none" when you rescale the frame size, the rescaling will be done on the whole frame and not on each field at a time. The result is poor. When you rescale you can set the deinterlace method to either blend or interpolate, but the results will be identical. All it does is tell Vegas to rescale a field at a time and not a whole frame at a time.

The deinterlace method is also important if you want to view interlaced video a field at a time by setting the project properties to twice the normal frame rate. Later versions of Vegas behave a little differently than earlier, but I am a bit hazy on what exactly now. I would have to find my lost notes or do an experiment.

Mike M. wrote on 10/8/2015, 3:55 PM

Thanks Peter for the explanation.

If I may ask another related question that I can't quite grasp....and hopefully I can explain it better in this post.

Let's say you want to sharpen a video clip. But you also want to change the resolution. Is the sharpening applied after the resolution change or before ?

(I would be adding the sharpen through the "Track FX" plugins)

I think the reason I'm confused on this, is because in Photoshop, when you change the resolution of a say an image, then obviously you want the effect after........or on the final image. So, it seems with Vegas you'd want the same...sharpening after the resolution change for your end result.

Perhaps I'm a bit confused about this and if it has anything to do with Project Properties.

PeterDuke wrote on 10/8/2015, 11:32 PM

Yes, sharpen after changing resolution.

Mike M. wrote on 10/8/2015, 11:36 PM

Peter are you confirming that Vegas's video processing flow applies the effect after resolution change during rendering ?

Mike M. wrote on 10/9/2015, 12:45 AM

I believe my confusion may be in whether the Video Effect is applied in the "Track FX" option or in the "Video Output FX" . So, that's where I need some help.

PeterDuke wrote on 10/9/2015, 5:37 AM

If you are downrezzing, say from HD to SD, you may need to apply a small amount of blur (reverse of sharpening) to mask aliasing effects before you resize.

I don't do resizing much so I take the no-brainer approach and render resized to a lossless intermediate and then apply the sharpen to it. You can do the same with nested projects, I believe.

Resizing has been done to death many times over the years. A search should bring some of them to the fore.

Here are some thread titles that may help you.

Aliasing, artifacts and moire
Downscaling interlaced video, my results
HD to SD Challenge
HD to SD downconversion
HDV to DVD downrez problems
Interlaced HD to DVD AGAIN - some test renders
AVCDH to Mpeg2 (DVD) - final output too soft