250 and SDI at DVinfo.net

Joseph H. Moore · July 12th, 2007, 07:52 PM

What exactly comes out the SDI feed? I assume its single-link 4:2:2 ?

Does the SDI feed include all of the processing except for HDV compression?

Can anyone point me towards some sample output? (motion preferable.)

I'm trying to justify to myself buying a camera today, rather than waiting for RED-like options with more modern recording/codec capabilities that will be available tomorrow.

Marion Dimayuga · July 12th, 2007, 09:53 PM

yes it's 4:2:2 uncompressed SD/HD-SDI live feed out

Joseph H. Moore · July 12th, 2007, 10:05 PM

And I assume the feed is not "raw" but rather takes into account all of your processing choices (scene file type parameters) ?

Tim Dashwood · July 12th, 2007, 11:36 PM

The HD-SDI feed can either output at 720P24,25,30 (in a pulldown) 720P50,60 or 1080i. You cannot simultaneously record to tape when the HD250 is in 1080i mode.

Yes, it does output the processed signal (after passing through the DSP) but not the compressed video that is recorded as HDV to tape.

Joseph H. Moore · July 13th, 2007, 09:54 AM

Thanks for the info, guys. Has anybody shot a test scenario both ways and have files to compare?

I've been on the fence for a long time now and my hope is that the additional color resolution and lack of macroblocking might make this an acceptable choice for a removable lens system in the price range I have to play with.

July 12th, 2007, 07:52 PM	#1
Joseph H. Moore Major Player Join Date: Oct 2005 Posts: 362	250 and SDI What exactly comes out the SDI feed? I assume its single-link 4:2:2 ? Does the SDI feed include all of the processing except for HDV compression? Can anyone point me towards some sample output? (motion preferable.) I'm trying to justify to myself buying a camera today, rather than waiting for RED-like options with more modern recording/codec capabilities that will be available tomorrow.

July 12th, 2007, 11:36 PM	#4
Tim Dashwood Wrangler Join Date: Aug 2005 Location: Toronto, ON, Canada Posts: 3,637	The HD-SDI feed can either output at 720P24,25,30 (in a pulldown) 720P50,60 or 1080i. You cannot simultaneously record to tape when the HD250 is in 1080i mode. Yes, it does output the processed signal (after passing through the DSP) but not the compressed video that is recorded as HDV to tape. __________________ Tim Dashwood

July 12th, 2007, 09:53 PM	#2
Marion Dimayuga Tourist Join Date: Apr 2007 Location: Singapore Posts: 1	yes it's 4:2:2 uncompressed SD/HD-SDI live feed out

July 12th, 2007, 10:05 PM	#3
Joseph H. Moore Major Player Join Date: Oct 2005 Posts: 362	And I assume the feed is not "raw" but rather takes into account all of your processing choices (scene file type parameters) ?

July 13th, 2007, 09:54 AM	#5
Joseph H. Moore Major Player Join Date: Oct 2005 Posts: 362	Thanks for the info, guys. Has anybody shot a test scenario both ways and have files to compare? I've been on the fence for a long time now and my hope is that the additional color resolution and lack of macroblocking might make this an acceptable choice for a removable lens system in the price range I have to play with.