Cineform and Blackmagic ( Canon HV20) at DVinfo.net

Ray Bell · August 14th, 2007, 12:03 PM

David, Last night I was running some tests on injesting some footage from the Blackmagic Intensity Pro.

My objective was to test to see if there is a difference between injesting from the tape using the Canon HV20 from the HDMI port and the Firewire port and comparing the differences in PPCS3.

I'm using the Cineform Prospect product with HDlink.

What I noticed was that the two different file captures, HDMI and Firewire from tape, have different pixle sizes....

The size difference should be explained by the difference in the frame size of 1440 to 1920...

But I thought the Prospect/HDlink package upscales the footage to 1920...

if this is so, as that is what is reported when using the firewire port.. shouldn't the Prospect/HDlink package also upscale the footage to 1920 from
the HDMI injest too???

David Newman · August 14th, 2007, 12:24 PM

HDV tape is 1440x1080 and the HDMI output is 1920x1080 -- that part you know. HDLink defaults to the native resolution of the source. If you what 1440x1080 tape to be scaled to 1920x1080, you need to set that option in the preferences panel of HDLink.

Ray Bell · August 14th, 2007, 01:30 PM

OK, Thanks David for the quick reply...

I did read that on your sight last night before I started the testing and it just didn't sink into my thick noggin.. :-)

Whats your play on the HV20.. use the HDMI port or Firewire port for injest from the tape??

David Newman · August 14th, 2007, 02:35 PM

If you want 1920x1080, use the HDMI output as that hardware based scaler and MPEG decoder is free to use. If your want 1440x1080 use the Firewire. Quality we be very close.

David Taylor · August 14th, 2007, 07:46 PM

In this case David means "free" of computer CPU usage as the processing is performed in the camera. HDLink can then spend all its CPU on encoding.

August 14th, 2007, 12:03 PM	#1
Ray Bell Regular Crew Join Date: Nov 2004 Posts: 1,414	Cineform and Blackmagic ( Canon HV20) David, Last night I was running some tests on injesting some footage from the Blackmagic Intensity Pro. My objective was to test to see if there is a difference between injesting from the tape using the Canon HV20 from the HDMI port and the Firewire port and comparing the differences in PPCS3. I'm using the Cineform Prospect product with HDlink. What I noticed was that the two different file captures, HDMI and Firewire from tape, have different pixle sizes.... The size difference should be explained by the difference in the frame size of 1440 to 1920... But I thought the Prospect/HDlink package upscales the footage to 1920... if this is so, as that is what is reported when using the firewire port.. shouldn't the Prospect/HDlink package also upscale the footage to 1920 from the HDMI injest too???

August 14th, 2007, 12:24 PM	#2
David Newman CTO, CineForm Inc. Join Date: Jul 2003 Location: Cardiff-by-the-Sea, California Posts: 8,095	HDV tape is 1440x1080 and the HDMI output is 1920x1080 -- that part you know. HDLink defaults to the native resolution of the source. If you what 1440x1080 tape to be scaled to 1920x1080, you need to set that option in the preferences panel of HDLink. __________________ David Newman -- web: www.gopro.com blog: cineform.blogspot.com -- twitter: twitter.com/David_Newman

August 14th, 2007, 02:35 PM	#4
David Newman CTO, CineForm Inc. Join Date: Jul 2003 Location: Cardiff-by-the-Sea, California Posts: 8,095	If you want 1920x1080, use the HDMI output as that hardware based scaler and MPEG decoder is free to use. If your want 1440x1080 use the Firewire. Quality we be very close. __________________ David Newman -- web: www.gopro.com blog: cineform.blogspot.com -- twitter: twitter.com/David_Newman

August 14th, 2007, 01:30 PM	#3
Ray Bell Regular Crew Join Date: Nov 2004 Posts: 1,414	OK, Thanks David for the quick reply... I did read that on your sight last night before I started the testing and it just didn't sink into my thick noggin.. :-) Whats your play on the HV20.. use the HDMI port or Firewire port for injest from the tape??

August 14th, 2007, 07:46 PM	#5
David Taylor Major Player Join Date: Sep 2003 Location: Solana Beach, CA Posts: 853	In this case David means "free" of computer CPU usage as the processing is performed in the camera. HDLink can then spend all its CPU on encoding.