Not Worried, Just Curious... at DVinfo.net

Matthew Nayman · December 17th, 2006, 09:44 AM

I noticed this a a bit on other cameras, but just curious for the reason so I can explain it clients.

When I watch 24F footage captured in my NLE (PP2), I notice some horizontal banding, not interlace artifacts, but like half the frame is from the previous frame (Not on interlace line,s but like, a 1/2 screen block).

The artifact isn't there on individual frames, and it doesn't appear during scrubbing, just playback. I assume it has something to do with 24f preview playback, but just curious if there is a way to do away with it (it shows on my external HDTV as well through DVI)

Philip Williams · December 17th, 2006, 10:59 AM

I'm using PP2 with 24F and I haven't seen what you're describing, on screen or on TV output.

Any issues with 30F or 60i?

Have you checked for newer drivers for your video card? Might try playing with the resolution and/or color depth as well.

Matthew Nayman · December 17th, 2006, 11:30 AM

I have the latest drivrs, and I still see it in some other frame rates. I see it on other comps to.

Bill Pryor · December 17th, 2006, 11:33 AM

I'm using FCP and don't see anything at all like that. Mine is looking great.

Michael Y Wong · December 17th, 2006, 12:35 PM

I believe what you have are minor v-sync issues, otherwise known as tearing.

See if your videocard managment application allows you to manipulate v-sync.

Thia happens alot in the PC world when watching trailers and some video games when the frame rate is not in sync iwth 60hz.

This happens to my system sometimes, and usually i just ignore it. I suppose it woudl make sense that 24f would be more prone to it due to the differneces in refresh rate vs our standard 60hz current.

Marty Hudzik · December 18th, 2006, 01:08 PM

Matthew,

I see this occassionally too but only on the output to my HDTV. We are both using NVidia cards so this could be the problem. It will not affect your final output but it is a bit annoying.

Peace!

Matthew Nayman · December 18th, 2006, 05:16 PM

anyhoo,I think its a refresh issue as Mike pointed out. And Marty, I got my comp working perfectly thanks to your help. Much obliged.

Mike, those pics are coming, I swear.

December 17th, 2006, 09:44 AM	#1
Matthew Nayman Major Player Join Date: Feb 2005 Location: Toronto Posts: 917	Not Worried, Just Curious... I noticed this a a bit on other cameras, but just curious for the reason so I can explain it clients. When I watch 24F footage captured in my NLE (PP2), I notice some horizontal banding, not interlace artifacts, but like half the frame is from the previous frame (Not on interlace line,s but like, a 1/2 screen block). The artifact isn't there on individual frames, and it doesn't appear during scrubbing, just playback. I assume it has something to do with 24f preview playback, but just curious if there is a way to do away with it (it shows on my external HDTV as well through DVI)

December 17th, 2006, 10:59 AM	#2
Philip Williams Major Player Join Date: Aug 2004 Location: Snellville, Georgia Posts: 614	I'm using PP2 with 24F and I haven't seen what you're describing, on screen or on TV output. Any issues with 30F or 60i? Have you checked for newer drivers for your video card? Might try playing with the resolution and/or color depth as well. __________________ www.philipwilliams.com

December 17th, 2006, 12:35 PM	#5
Michael Y Wong Major Player Join Date: Jun 2006 Location: Toronto Ontario Canada! Posts: 353	I believe what you have are minor v-sync issues, otherwise known as tearing. See if your videocard managment application allows you to manipulate v-sync. Thia happens alot in the PC world when watching trailers and some video games when the frame rate is not in sync iwth 60hz. This happens to my system sometimes, and usually i just ignore it. I suppose it woudl make sense that 24f would be more prone to it due to the differneces in refresh rate vs our standard 60hz current. __________________ dreaming hobbyist + storyteller www.michaelywong.com

December 17th, 2006, 11:30 AM	#3
Matthew Nayman Major Player Join Date: Feb 2005 Location: Toronto Posts: 917	I have the latest drivrs, and I still see it in some other frame rates. I see it on other comps to.

December 17th, 2006, 11:33 AM	#4
Bill Pryor Contributor Join Date: Jan 2003 Location: Kansas City, MO Posts: 4,449	I'm using FCP and don't see anything at all like that. Mine is looking great.

December 18th, 2006, 01:08 PM	#6
Marty Hudzik Trustee Join Date: Jul 2004 Location: Canton, Ohio Posts: 1,771	Matthew, I see this occassionally too but only on the output to my HDTV. We are both using NVidia cards so this could be the problem. It will not affect your final output but it is a bit annoying. Peace!

December 18th, 2006, 05:16 PM	#7
Matthew Nayman Major Player Join Date: Feb 2005 Location: Toronto Posts: 917	anyhoo,I think its a refresh issue as Mike pointed out. And Marty, I got my comp working perfectly thanks to your help. Much obliged. Mike, those pics are coming, I swear.