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Converting from SDI 422 to HD

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David Hutto
Converting from SDI 422 to HD
on Jan 31, 2012 at 5:01:47 pm

What is the best way to create an HD master for PBS when the show was captured in standard definition 16:9 SDI 422 and edited in 10 bit uncompressed?

Edited in Final Cut Pro 7.03 - 56:46 length.

Would like to create HDCAM tape masters and files for distribution.

Thanks for your help


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Rafael Amador
Re: Converting from SDI 422 to HD
on Jan 31, 2012 at 5:18:04 pm

Compressor is the best software solution in FC, but if you wan't to get something better do it with hardware. An AJA, Black Magic or Matrox will do a better upscaling and in real time.
Many HD desks (I guess HDCAM too) can up/downscale. Talk with the people will print the HDCAM tapes.
rafael

http://www.nagavideo.com


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Shane Ross
Re: Converting from SDI 422 to HD
on Jan 31, 2012 at 6:22:45 pm

Best to recapture all the tapes via a Kona card. Hardware upconvert is superior to software upconvert.

SD 16:9? That isn't a format that exists on tape. Either anamorphic or letterbox.

Shane
Little Frog Post
Read my blog, Little Frog in High Def


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David Hutto
Re: Converting from SDI 422 to HD
on Jan 31, 2012 at 7:16:46 pm

Yes the projects are anamorphic. From an aesthetic point of view, would it be better to do some sort of "letter box" with the 16:9 image to reduce softness? What will give us the best on-air look?


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Shane Ross
Re: Converting from SDI 422 to HD
on Jan 31, 2012 at 8:21:22 pm

[David Hutto] "From an aesthetic point of view, would it be better to do some sort of "letter box" with the 16:9 image to reduce softness?"

No. Letterbox 16:9? Not unless you want it to look 1.85 to 1, which is how feature films are presented.

[David Hutto] "What will give us the best on-air look?"

Recapture the SD as HD via a capture card that can do the upconvert via hardware...and the 16:9 should fill the HD frame fine.

Shane
Little Frog Post
Read my blog, Little Frog in High Def


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Paul Keyserling
Re: Converting from SDI 422 to HD
on Jan 31, 2012 at 7:36:01 pm

I'm a bit confused by your statement that "That isn't a format that exists on tape. Either anamorphic or letterbox."

I have a BetaSP camera that shoots 16:9 in addition to 4:3 and has a wider chip (ie higher pixel count) than the non-16:9 versions. In 16:9 it plays back full screen on a 16:9 monitor and squeezes the horizontal to fit when viewed on a 4:3 monitor. (Of course it likewise stretches the horizontal in 4:3 mode when played on a 4:3 monitor.)

Is this not 16:9 SD? And if not what is it?

Paul Keyserling
Big Pictures
Beaufort, SC


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Shane Ross
Re: Converting from SDI 422 to HD
on Jan 31, 2012 at 8:19:38 pm

[Paul Keyserling] "I have a BetaSP camera that shoots 16:9 in addition to 4:3"

I'm sure it shot anamorphic to tape. Wider chip...I do recall the cameras having that. But the tape format is always 4:3, so the 16:9 image was recorded 4:3, and flagged as 16:9. So that the 16:9 monitor would know "hey, this is 16:9." the 4:3 monitors played back what was recorded onto tape.

[Paul Keyserling] "Is this not 16:9 SD? And if not what is it?"

Anamorphic 16:9...not full raster. That's the only difference. Squeezed, not full sized.

Shane
Little Frog Post
Read my blog, Little Frog in High Def


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Jeff Meyer
Re: Converting from SDI 422 to HD
on Jan 31, 2012 at 8:29:14 pm

It's anamorphic 4x3 SD.


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Michael Gissing
Re: Converting from SDI 422 to HD
on Jan 31, 2012 at 9:44:34 pm

AJA in my experience do a better upscale, although I have not seen Matrox upscaling compared. I used to have a Decklink and it's up/down scaling wasn't as good as AJA.

My HDCam 1800 machine doesn't up scale but it does a great downscale - as good as the AJA. Hopefully your timeline is anamorphic which gets stretched our to square pixel in the upscale to HD.


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