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Record in HD while outputting SD-SDI?

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Jonathan Lang
Record in HD while outputting SD-SDI?
on Nov 8, 2013 at 5:48:40 pm

I'm working with a HPX171E - I'm sure this is possible, but I just can't seem to find the right settings.
Our BNC cables can't reliably transmit HD-SDI (I know... they'll be replaced soon) and so I want to send an SD-SDI signal while still recording in 720p on my P2 cards.
How can I activate the downconvert for the SD-SDI while I'm recording HD?
Thanks


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Chris Tompkins
Re: Record in HD while outputting SD-SDI?
on Nov 10, 2013 at 12:42:11 pm

Page 107 of the manual will show you the Down-Convert options.

Switches down-conversion output mode.
SIDE CROP: Crops the right and left edges of the images with the 4:3 aspect ratio.
LETTER BOX: Adds black bands at the top and bottom of the images, and the images with the 16:9 aspect ratio are displayed in the 4:3 aspect ratio.
SQUEEZE: Select this option for 16:9 aspect ratio images. When viewed on a 4:3 aspect ratio monitor, images are squeezed horizontally.

Your shooting 720p and you want to output 720p? This is not a down convert.

Chris


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Jonathan Lang
Re: Record in HD while outputting SD-SDI?
on Nov 10, 2013 at 3:11:43 pm

As I stated, I want to output SD-SDI - I looked at the manual first of course... what I didn't explicitly get out of it is that the down-convert only activates when you're recording in an interlaced format. So if I'm recording at 1080i, down-convert is possible for the SDI-Output - no luck with a progressive format like 720p.
So that's what I did, set my cameras to 1080i instead of 720p: voila! 576i over SDI and HD on my P2 cards! :)

Student of audio- & video-engineering at the IMM Düsseldorf in Germany.


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Chris Tompkins
Re: Record in HD while outputting SD-SDI?
on Nov 10, 2013 at 5:05:27 pm

I'm sorry, I misunderstood, glad you made it work.

Chris


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