some compression blocks on 720/60p? at DVinfo.net

Kaku Ito · April 5th, 2007, 09:11 AM

With HD250, would it be more demanding to record 720/60p than 30p?
If video shows some compression artifacts with 720/60p, do people prefer recording in 480/60p (if that leads to less compression artifacts) and uprez later?

Chad Terpstra · April 5th, 2007, 07:11 PM

Na. I have the HD100 and the 480p60 always has plenty of compression artifacts. I'd stick with 720p60 if I had a choice. ;-)

Kaku Ito · April 6th, 2007, 10:03 AM

Thanks Chad,

Is there any special preset I can use to lessen the compression artifacts?
Would it improve if I make the details or sharpness lower?

Mark Silva · April 6th, 2007, 10:46 PM

Some say anywhere from -7 to 0 on the sharpness is very helpful.

-7 seems a bit soft on my hd100 so i run it at 0.

Justin Ferar · April 7th, 2007, 01:23 AM

Kaku,

What compression artifacting are you refering to? Are you talking about extreme motion like whiping the camera around? Or is it something that shows up in still shots?

Do tell...

Kaku Ito · April 8th, 2007, 03:42 AM

I put the cam on a reasonable video tripod and tried least amount of unnecessary panning but just following a BMX racer from say 10 meters away (bushes and trees in the back ground) results plenty of compression.
In the same shot, 60p is undesireble, and 24p looks okay.

I'm already thinking to combine HD200 and Pana HVX200 to cover each others weak points. I think that will be pretty hot.

Kaku Ito · April 8th, 2007, 03:44 AM

Quote:

Originally Posted by Mark Silva

Some say anywhere from -7 to 0 on the sharpness is very helpful.

-7 seems a bit soft on my hd100 so i run it at 0.

Thanks Mark, I will try that.

April 5th, 2007, 09:11 AM	#1
Kaku Ito Trustee Join Date: Jun 2004 Location: Chiyoda-ku, Tokyo Posts: 1,382	some compression blocks on 720/60p? With HD250, would it be more demanding to record 720/60p than 30p? If video shows some compression artifacts with 720/60p, do people prefer recording in 480/60p (if that leads to less compression artifacts) and uprez later?

April 7th, 2007, 01:23 AM	#5
Justin Ferar Major Player Join Date: Aug 2006 Location: Larkspur, CA Posts: 378	Kaku, What compression artifacting are you refering to? Are you talking about extreme motion like whiping the camera around? Or is it something that shows up in still shots? Do tell... __________________ www.justinferar.com www.weddingsonfilm.com

April 5th, 2007, 07:11 PM	#2
Chad Terpstra Major Player Join Date: Jun 2005 Location: Grand Rapids, MI Posts: 320	Na. I have the HD100 and the 480p60 always has plenty of compression artifacts. I'd stick with 720p60 if I had a choice. ;-)

April 6th, 2007, 10:03 AM	#3
Kaku Ito Trustee Join Date: Jun 2004 Location: Chiyoda-ku, Tokyo Posts: 1,382	Thanks Chad, Is there any special preset I can use to lessen the compression artifacts? Would it improve if I make the details or sharpness lower?

April 6th, 2007, 10:46 PM	#4
Mark Silva Major Player Join Date: Apr 2006 Location: Pacific NW Posts: 431	Some say anywhere from -7 to 0 on the sharpness is very helpful. -7 seems a bit soft on my hd100 so i run it at 0.

April 8th, 2007, 03:42 AM	#6
Kaku Ito Trustee Join Date: Jun 2004 Location: Chiyoda-ku, Tokyo Posts: 1,382	I put the cam on a reasonable video tripod and tried least amount of unnecessary panning but just following a BMX racer from say 10 meters away (bushes and trees in the back ground) results plenty of compression. In the same shot, 60p is undesireble, and 24p looks okay. I'm already thinking to combine HD200 and Pana HVX200 to cover each others weak points. I think that will be pretty hot.