30P Question at DVinfo.net

Craig Bellaire · September 29th, 2004, 06:29 PM

If I shoot in 30P and then convert to DVD/Mpeg and play it on a standard tv does my TV still strobe or have the jittery effect like it would if I would play the DV file straight from the camera. I'm just trying to get the best image but with out the strobe effect..
thanks

Aaron Shaw · September 29th, 2004, 08:51 PM

It certainly won't be very noticable. The fact that your progressive frame is converted into two fields acts (I presume) just like a double shutter on a cinema projector. It drastically decreases flicker. Not sure about strobing though... did you mean actual "strobing" or flicker?

Craig Bellaire · September 30th, 2004, 04:26 AM

I guess the flicker that you would get when shooting in 30 P and showing it on TV. You get the better resolution but you also get flicker at least when it's in DV form and being shown directly from the DV tape. I was just wondering if it's the same because most good dvd players say they are progresive scan but I didn't notice the flicker. Again I would love to have the better resolution that 30p has but if I can save the footage out to DVD and lose the flicker that would be great.. thanks

Jesse Bekas · September 30th, 2004, 03:51 PM

Progressive Scan DVD players are just running a conversion before the footage hits an interlace only screen. What model camera are you shooting with?

Craig Bellaire · September 30th, 2004, 04:26 PM

I'm shooting a JVC GR-DVM90U single chip camera. It can shoot both 60i and 30p...

Jesse Bekas · September 30th, 2004, 10:09 PM

Does it have a true progressive scan CCD, or does it just have some form of the Panasonic and Canon frame mode? Frame mode is actually like a full frame interlaced mode, and is a psudeo progressive scan.
If it's the former and the cmaera is not doing a conversion that could be causing yor stutter, and if it's the latter version, then that's just the motion blurring quality of that frame mode, as it should be playing back fine on an interlace monitor.

Craig Bellaire · October 1st, 2004, 04:11 AM

680,00 Pixel Progressive Scan 1/4" CCD with Progressive Color Filter, High Band Processor for expanded 520 lines of Horizontal resolution and a Full 480 lines of vertical resolution. This is what the manual says..Other then that I've tried looking at this is a professional monitor and it looks great except for the flicker associated with all pregrsive cameras. Again I was wondering why DVD players are progresive and they don't flicker but you mentioned it earler.. thanks again

September 29th, 2004, 06:29 PM	#1
Craig Bellaire Major Player Join Date: Aug 2004 Location: Rochester, NY Posts: 422	30P Question If I shoot in 30P and then convert to DVD/Mpeg and play it on a standard tv does my TV still strobe or have the jittery effect like it would if I would play the DV file straight from the camera. I'm just trying to get the best image but with out the strobe effect.. thanks __________________ Craig Bellaire www.VerticalVideoSolutions.com

September 30th, 2004, 04:26 AM	#3
Craig Bellaire Major Player Join Date: Aug 2004 Location: Rochester, NY Posts: 422	flicker I guess the flicker that you would get when shooting in 30 P and showing it on TV. You get the better resolution but you also get flicker at least when it's in DV form and being shown directly from the DV tape. I was just wondering if it's the same because most good dvd players say they are progresive scan but I didn't notice the flicker. Again I would love to have the better resolution that 30p has but if I can save the footage out to DVD and lose the flicker that would be great.. thanks __________________ Craig Bellaire www.VerticalVideoSolutions.com

September 30th, 2004, 04:26 PM	#5
Craig Bellaire Major Player Join Date: Aug 2004 Location: Rochester, NY Posts: 422	Shooting I'm shooting a JVC GR-DVM90U single chip camera. It can shoot both 60i and 30p... __________________ Craig Bellaire www.VerticalVideoSolutions.com

October 1st, 2004, 04:11 AM	#7
Craig Bellaire Major Player Join Date: Aug 2004 Location: Rochester, NY Posts: 422	the best way to explane.. 680,00 Pixel Progressive Scan 1/4" CCD with Progressive Color Filter, High Band Processor for expanded 520 lines of Horizontal resolution and a Full 480 lines of vertical resolution. This is what the manual says..Other then that I've tried looking at this is a professional monitor and it looks great except for the flicker associated with all pregrsive cameras. Again I was wondering why DVD players are progresive and they don't flicker but you mentioned it earler.. thanks again __________________ Craig Bellaire www.VerticalVideoSolutions.com

September 29th, 2004, 08:51 PM	#2
Aaron Shaw Major Player Join Date: Jul 2004 Posts: 587	It certainly won't be very noticable. The fact that your progressive frame is converted into two fields acts (I presume) just like a double shutter on a cinema projector. It drastically decreases flicker. Not sure about strobing though... did you mean actual "strobing" or flicker?

September 30th, 2004, 03:51 PM	#4
Jesse Bekas Major Player Join Date: Mar 2004 Location: Ridgefield Park, New Jersey, USA Posts: 572	Progressive Scan DVD players are just running a conversion before the footage hits an interlace only screen. What model camera are you shooting with?

September 30th, 2004, 10:09 PM	#6
Jesse Bekas Major Player Join Date: Mar 2004 Location: Ridgefield Park, New Jersey, USA Posts: 572	Does it have a true progressive scan CCD, or does it just have some form of the Panasonic and Canon frame mode? Frame mode is actually like a full frame interlaced mode, and is a psudeo progressive scan. If it's the former and the cmaera is not doing a conversion that could be causing yor stutter, and if it's the latter version, then that's just the motion blurring quality of that frame mode, as it should be playing back fine on an interlace monitor.