Jaggies

W

Walt Mitchell

New member
First post! Long time reader, first time poster.

What are the best settings for reducing jaggies in the footage? The kind you see along horizontal and vertical lines.

I'm usually shooting 720/60p for the most part.

Thanks!
 
progressive for sure. are you transcoding to another format? that could be where your problem lies also.
 
It's not terrible, it's just subtely annoying.

I'll be getting Neo Scene (I tried the demo).

Anybody know the best template to open the converted files in Vegas?
 
Lower the main detail setting to a -2. You can keep vertical detail to 0 +1 or +2 as it does not have as much influence on jaggies.

Then apply sharpening in post to make up for the loss of detail.

Test to your liking!
 
How would you recommend correcting/eliminating the jaggies in post? I shot a first communion last week and the problem is noticeable as the kids walk up and down the steps to the altar. This is my first official HD project.

I shot it in PH mode 1080/60i. Iris all the way open, 60 shutter, no gain, manual focus.

I loaded it into Vegas without using an intermediate codec using the HD1080-60i project settings. When I rendered it out to an DVD NTSC file the jaggies were terrible with the stock variable bit rate settings. When I changed to a constant bitrate of 8,000,000, it improved some, but still (I think) a little worse than the SD footage we use to shoot with a PD-170.

A friend recommended rendering first to an HDV file and then to the DVD NTSC constant bit rate file, but that didn't help either.

Any suggestions?

Bill
 
Can you show us a screenshot just so we're sure exactly what "jaggies" you're talking about?

If it's what I think it is, (stair stepping that only appears with motion) then it's the age-old issue of interlacing.

The fact is, it's interlaced because you shot it in interlaced mode. There are advantages to interlaced (it works better on tube TVs, the broadcast industry still seems to prefer it), and there are advantages to progressive (they look better on modern LCD screens; you can snarf a still frame).

But interlacing isn't a bad deliver format. On any modern TV the artifacts won't really be noticeable (try burning to Blu Ray / DVD / etc and looking at it on a variety of TVs - you've been watching all interlaced footage for most of your life). Again - there is the option for interlaced because often that is desired. If you want it removed, (A) shoot progressive from now on, and (B) look up 3:2 pulldown and other articles related to de-interlacing methods.

Personally I only know just the basic concepts (I'm a bit fuzzy on a lot of the details), so take a look around to find some articles. This issue has been talked about by videographers for decades.
 
When you authored the DVD, did you set it for progressive or interlaced? I always set mine for progressive.
When you burned the MPEG file for the DVD, what were your settings?
 
I think I have figured out my problem. I appreciate the advice on the interlace vs. progressive stuff, but I was already pretty familiar with those issues and had never had a problem using the stock settings in vegas before, so I was wondering if it was related to this camera/file format.

Turns out a couple of drop down boxes in the project settings (within vegas) were
changed and I did not know I did it? The one giving me all the grief and making everything look terrible was the "Deinterlace method". It was set to none when it should have been set to "blend." It might have taken me a while to figure this out if my wife didn't also have the same machine I do with Vegas installed.

I also had the pixel format setting different, but I'll start a new thread for that.

Thanks,

Bill
 
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