Jumpiness in video when panning and zooming at DVinfo.net

Steve Kalle · December 9th, 2009, 05:51 PM

I couldn't think of a better title for my situation.

I watched some footage from today and noticed a lot of jumpyness in the video when panning and both panning & zooming. It was shot at 1080 30p with Shutter set to 1/60 in the MENU BUT the LCD shows Shutter:Off. I thought that setting shutter in the dang Menu was enough. I then found the other section in the Menu for Full control of the on-screen display.

So, besides me being an idiot, is there any way to smooth out this footage? (on a PC using Premiere/AE CS4)

Thanks

PS I played the video in both ClipBrowser and Premiere and my PC is very fast so the problem doesn't lie there.

Olof Ekbergh · December 9th, 2009, 06:10 PM

One of the really big differences shooting in 24p and 30p to almost the same extent, is the 7 second rule.

Never move camera or let an object move through the shooting field faster than 7 seconds. Be very smooth and slow in your moves. Unless you are going for an effect.

60i/60p or 50i/50p is very forgiving of fast moves. Slower frame rates are not.

Robert Young · December 9th, 2009, 06:20 PM

No kidding!!
If I am shooting any sort of action footage, or footage with a lot of camera movement, I'll use 60i.
Also, I think maybe the shooter is more sensitive at spotting the "judder" in his own footage than other viewers might be. I see it in Hollywood films if I look for it, but I'm usually not looking & it passes without notice.

Eugene J. Kulak · December 9th, 2009, 08:05 PM

Steve the screen says shutter off becasue the shutter switch on the front underside of the camcorder is in the off position. Switch it to on and the screen will read whatever you set the shutter on.

Brian Barkley · December 10th, 2009, 07:27 AM

Does your Premiere Pro have a Matrox Card? If so, then you shouldn't be shooting in 30p because Matrox cannot handle that. You MUST shoot and edit with the same specs. My Premiere Pro has the Matrox Axio card, so I both shoot and edit in 23.976 fps (1080 X 1920). I therefore have smooth zooms and pans. If you are viewing on a time line that does not match the specs that you shot the footage in, then you will get jittery moves.

Eugene J. Kulak · December 10th, 2009, 09:14 AM

Brian, what Matrox card are you referring to? I have the RT.X2 on my system, shoot in 30P almost always, and suffer no problems whatsoever. Any imported 1920x1080P footage is converted to 1440x1080P.The only time I have ever seem any jittery footage when panning on the EX-1 is when I was experimenting with it in full auto mode.

Brian Barkley · December 10th, 2009, 10:09 AM

Eugene, thanks for the info ... I guess I've been confused in producing my first high definition production. I didn't know what 1440 X 1080 was, but did some research and understand it a bit better now. It has to do with square vs rectangle pixels, a 1.333 ratio. I've always set my EX-3 to 1080 X 1920, 23.976fps to match the same settings with my Matrox Axio card. But now I realize that I can shoot 29.97fps and set my Matrox Axio card setting in 29.97fps, with the 1440 X 1080 setting . . . thanks, it's been a bit confusing. I work alone and have no one to inform my old brain of modern technology.

I'll try working 29.97fps on my next project, because I buy a lot of stock footage that is shot in that format.

December 9th, 2009, 05:51 PM	#1
Steve Kalle Trustee Join Date: Aug 2009 Location: Chicago, IL Posts: 1,554	Jumpiness in video when panning and zooming I couldn't think of a better title for my situation. I watched some footage from today and noticed a lot of jumpyness in the video when panning and both panning & zooming. It was shot at 1080 30p with Shutter set to 1/60 in the MENU BUT the LCD shows Shutter:Off. I thought that setting shutter in the dang Menu was enough. I then found the other section in the Menu for Full control of the on-screen display. So, besides me being an idiot, is there any way to smooth out this footage? (on a PC using Premiere/AE CS4) Thanks PS I played the video in both ClipBrowser and Premiere and my PC is very fast so the problem doesn't lie there.

December 9th, 2009, 06:20 PM	#3
Robert Young Trustee Join Date: Mar 2005 Location: Coronado Island Posts: 1,472	No kidding!! If I am shooting any sort of action footage, or footage with a lot of camera movement, I'll use 60i. Also, I think maybe the shooter is more sensitive at spotting the "judder" in his own footage than other viewers might be. I see it in Hollywood films if I look for it, but I'm usually not looking & it passes without notice. __________________ Bob

December 9th, 2009, 08:05 PM	#4
Eugene J. Kulak Regular Crew Join Date: Feb 2004 Location: New Britain, CT Posts: 95	Jumpiness in video when panning and zooming Steve the screen says shutter off becasue the shutter switch on the front underside of the camcorder is in the off position. Switch it to on and the screen will read whatever you set the shutter on. __________________ Gene, Black Hole Video

December 10th, 2009, 09:14 AM	#6
Eugene J. Kulak Regular Crew Join Date: Feb 2004 Location: New Britain, CT Posts: 95	Brian, what Matrox card are you referring to? I have the RT.X2 on my system, shoot in 30P almost always, and suffer no problems whatsoever. Any imported 1920x1080P footage is converted to 1440x1080P.The only time I have ever seem any jittery footage when panning on the EX-1 is when I was experimenting with it in full auto mode. __________________ Gene, Black Hole Video

December 9th, 2009, 06:10 PM	#2
Olof Ekbergh Sponsor: Westside AV Join Date: Dec 2008 Location: Mount Washington Valley, NH, USA Posts: 1,365	One of the really big differences shooting in 24p and 30p to almost the same extent, is the 7 second rule. Never move camera or let an object move through the shooting field faster than 7 seconds. Be very smooth and slow in your moves. Unless you are going for an effect. 60i/60p or 50i/50p is very forgiving of fast moves. Slower frame rates are not.

December 10th, 2009, 07:27 AM	#5
Brian Barkley Major Player Join Date: Jan 2009 Location: Overland Park, KS Posts: 233	Does your Premiere Pro have a Matrox Card? If so, then you shouldn't be shooting in 30p because Matrox cannot handle that. You MUST shoot and edit with the same specs. My Premiere Pro has the Matrox Axio card, so I both shoot and edit in 23.976 fps (1080 X 1920). I therefore have smooth zooms and pans. If you are viewing on a time line that does not match the specs that you shot the footage in, then you will get jittery moves.

December 10th, 2009, 10:09 AM	#7
Brian Barkley Major Player Join Date: Jan 2009 Location: Overland Park, KS Posts: 233	Eugene, thanks for the info ... I guess I've been confused in producing my first high definition production. I didn't know what 1440 X 1080 was, but did some research and understand it a bit better now. It has to do with square vs rectangle pixels, a 1.333 ratio. I've always set my EX-3 to 1080 X 1920, 23.976fps to match the same settings with my Matrox Axio card. But now I realize that I can shoot 29.97fps and set my Matrox Axio card setting in 29.97fps, with the 1440 X 1080 setting . . . thanks, it's been a bit confusing. I work alone and have no one to inform my old brain of modern technology. I'll try working 29.97fps on my next project, because I buy a lot of stock footage that is shot in that format.