interlacing

Frank Burch · Post by **Frank Burch** » Tue Jan 05, 2010 9:00 pm

This topic is on another thread but the replies are contradictory. We need expert advice here. The facts are:
Modern flat screens and monitors require non-interlaced material. From a camcorder the TV will do the deinterlacing. But is it better to let VS do it during capture? Of course you may be able to film in progressive mode, but you may not want to. So this is simply avoiding the question. Question begging in fact. VS 10 offers deinterlacing. It must be there for something. Of course I could simply try both methods and drawn my own conclusion, but if anyone has advice on the question it would be useful. Whether SD or HD you camcorder is recording interlaced I believe. You flat screen will not accept this. The question thus concerns everyone.

Black Lab · Post by **Black Lab** » Tue Jan 05, 2010 9:11 pm

Talk about contradictory:

From a camcorder the TV will do the deinterlacing.

Whether SD or HD you camcorder is recording interlaced I believe. You flat screen will not accept this.

Can you clarify?

Frank Burch · Post by **Frank Burch** » Tue Jan 05, 2010 9:37 pm

Well, maybe I'm way off track, but I believe a flat screen requires progressive mode. Camcorder mode is normally interlaced. Hook up your camcorder to the TV and the TV software will deinterlace your film to show it on the screen. Alternatively you can deinterlace during capture.

Black Lab · Post by **Black Lab** » Tue Jan 05, 2010 9:42 pm

I understand that. What I didn't understand was that first you said the TV will do the deinterlacing from a camcorder, but then you said your flat screen will not accept interlaced video from a camcorder. How can the TV deinterlace it if it won't accept it in the first place.

Frank Burch · Post by **Frank Burch** » Tue Jan 05, 2010 9:57 pm

Jeff, you put interlaced film into the TV and the TV software converts it to progressive. A flat screen cannot show interlaced film (as far as I know).

Black Lab · Post by **Black Lab** » Tue Jan 05, 2010 10:15 pm

I'm confused. When you say TV are you referring to CRT TV's, and when you say flat screen you are referring to HD TV's (Plasma & LCD)?

skier-hughes · Post by **skier-hughes** » Wed Jan 06, 2010 11:19 am

A CRT can have a flat screen

This is good info
http://www.burnyourbonus.info/hdtv-faq/faq2.html

I think though your question is where to do the de-interlacing.

My answer would be to let the tv do it.

Reason, VS for one, is a low budget application and will use rudimentary processes to achieve fair results.

You could buy a professional app to do your conversion, but spending thousands on this for a few home movies may be overkill.

The tv's are designed to take a particular signal, and deal with that, two many conversions will just muddy the water, as well as the video.

Post by **Ron P.** » Wed Jan 06, 2010 11:31 am

A CRT can have a flat screen

Yep, they sure can, I have a little one sitting next to my PC, that I use to preview my work. ...

Frank Burch · Post by **Frank Burch** » Wed Jan 06, 2010 12:29 pm

Thanks Graham, that sounds logical. Yes HD broardcasts are normally interlaced, I think, so the new TV's are equipped to convert to progressive for the LCD screen. Hence, no need to convert during capture. Converting is dangerous because of the threat of loss of quality.

Have I got it right?

Black Lab · Post by **Black Lab** » Wed Jan 06, 2010 2:04 pm

Ron P. wrote:
A CRT can have a flat screen
Yep, they sure can, I have a little one sitting next to my PC, that I use to preview my work. ...

Yes I know. That's why I was trying to get clarification of what he was referring to. But enough of wasting my time on him.

Frank Burch · Post by **Frank Burch** » Wed Jan 06, 2010 2:31 pm

Thanks Jeff. You were indeed wasting your precious time, because you knew nothing about the subject. You were also wasting my time.

skier-hughes · Post by **skier-hughes** » Wed Jan 06, 2010 4:55 pm

Frank Burch wrote:Thanks Graham, that sounds logical. Yes HD broardcasts are normally interlaced, I think, so the new TV's are equipped to convert to progressive for the LCD screen. Hence, no need to convert during capture. Converting is dangerous because of the threat of loss of quality.

Have I got it right?

yep, right

Post by **Ron P.** » Wed Jan 06, 2010 5:17 pm

Frank Burch wrote:Thanks Jeff. You were indeed wasting your precious time, because you knew nothing about the subject. You were also wasting my time.

Well if you already knew so much, why are posing the question? I think you need to reconsider your statement! I can assure you, that you need not waste your time, here!!!

Post by **Ron P.** » Wed Jan 06, 2010 5:39 pm

Black Lab wrote:
Ron P. wrote:
A CRT can have a flat screen
Yep, they sure can, I have a little one sitting next to my PC, that I use to preview my work. ...
Yes I know. That's why I was trying to get clarification of what he was referring to. But enough of wasting my time on him.

Jeff, I was just offering my confirmation, since I do own one of them, not questioning your knowledge...

Black Lab · Post by **Black Lab** » Wed Jan 06, 2010 6:01 pm

Oh, I know Ron. No problem there.

And I know there are all sorts of flat screens, whether they be pc monitors, CRT TVs, or LCD TVs. But that was my point to the OP. I was simply trying to clarify.