1080i vs 720p confusion at DVinfo.net

Tim Allison · February 21st, 2008, 05:36 PM

I'm trying to put together an inexpensive post production system for the local high school. They already have a Mac Pro computer. They also have a Sony HVR-HD1000U camera that shoots 1080i HDV video. This camera does have a HDMI port.

The Black Magic Intensity card has HDMI i/o. What's going to happen if we spit out a 1080i signal (via HDMI on the Intensity card) to to the HDMI port on a consumer grade 720p HDTV set?

Will the tv set just cross convert from 1080i to 720p? Can the Intensity cross-convert on ingest from 1080i to 720p?

Rick L. Allen · February 22nd, 2008, 07:40 AM

Most HDTV sets will convert to the appropriate format (1080i or 720p) but check the manual to be sure.

Stay in 1080i. There's no good reason to convert to 720p just for monitoring purposes which as you now know isn't an issue.

Devin Termini · February 23rd, 2008, 12:57 AM

A friend of mine is doing the same thing. Outputting a 1080i signal to a 720p monitor using the Intensity card. He says it is working for him. I guess just make sure that your monitor can accept 1080i inputs (this is the case with almost all HD monitors toady).

February 21st, 2008, 05:36 PM	#1
Tim Allison Regular Crew Join Date: Dec 2006 Location: Starkville, MS Posts: 96	1080i vs 720p confusion I'm trying to put together an inexpensive post production system for the local high school. They already have a Mac Pro computer. They also have a Sony HVR-HD1000U camera that shoots 1080i HDV video. This camera does have a HDMI port. The Black Magic Intensity card has HDMI i/o. What's going to happen if we spit out a 1080i signal (via HDMI on the Intensity card) to to the HDMI port on a consumer grade 720p HDTV set? Will the tv set just cross convert from 1080i to 720p? Can the Intensity cross-convert on ingest from 1080i to 720p?

February 22nd, 2008, 07:40 AM	#2
Rick L. Allen Major Player Join Date: Dec 2007 Location: Fayetteville, NC Posts: 535	Most HDTV sets will convert to the appropriate format (1080i or 720p) but check the manual to be sure. Stay in 1080i. There's no good reason to convert to 720p just for monitoring purposes which as you now know isn't an issue.

February 23rd, 2008, 12:57 AM	#3
Devin Termini Regular Crew Join Date: Sep 2007 Location: Mount Pleasant, MI Posts: 177	A friend of mine is doing the same thing. Outputting a 1080i signal to a 720p monitor using the Intensity card. He says it is working for him. I guess just make sure that your monitor can accept 1080i inputs (this is the case with almost all HD monitors toady).