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Josh Woll
Down converting HD to SD
on Aug 29, 2011 at 2:49:59 pm

Importing HVX200 960x720 (1280x720) and when I go to select 720x480 or 486, the image is stretched?

1280x720 - 1.7777777

720x480 - 1.5

720x486 - 1.4814814

720x405 - 1.777777

There probably is an easy explanation to all of this, but any insight would be grateful.

Here is an example image file of both cases.

2872_example.tiff.zip

Thank you!


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Shane Ross
Re: Down converting HD to SD
on Aug 29, 2011 at 4:34:47 pm

DVCPRO HD at 720p...as you noted...is 960x720. Anamorphic...not full raster 1280x720. It is squeezed into the 4:3...960x720 frame. FCP unsqueezes it, as it detects the anamorphic flags. As does Quicktime. But convert it to another 4:3 option, like 720x480 or 720x486...it will be squeezed.

Shane

GETTING ORGANIZED WITH FINAL CUT PRO DVD...don't miss it.
Read my blog, Little Frog in High Def


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Josh Woll
Re: Down converting HD to SD
on Aug 29, 2011 at 4:40:03 pm

Thanks for the info Shane, what do you suggest is the best way to export the file out of FCP while down converting it to NTSC for the station?


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Shane Ross
Re: Down converting HD to SD
on Aug 29, 2011 at 4:44:34 pm

They want a file? In what format? And do they want it 4:3 cropped? Meaning the sides chopped off...Pan and Scan. Or will they accept letterboxed?

Shane

GETTING ORGANIZED WITH FINAL CUT PRO DVD...don't miss it.
Read my blog, Little Frog in High Def


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Josh Woll
Re: Down converting HD to SD
on Aug 29, 2011 at 4:55:26 pm

We haven't gotten that far yet. I'm doing this edit for another production company and once they approve the spots, then we will find out how it's being delivered.

It's such a pain all of these different formats and aspect ratios. I wish there was an easier solution for all of this.


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Shane Ross
Re: Down converting HD to SD
on Aug 29, 2011 at 5:01:48 pm

Finding out the specs BEFORE you edit, or online, is really important. Because you might shoot and edit planning for the 16:9 frame, and the network will go "we want a 4:3 cropped final." And this means you will lose the sides, and might mess up the framing you had, and you will have to literally pan and scan each shot.

But that's advice for the future. Don't worry about what you need to do for final delivery until you get those specs. THEN try to figure out what needs to be done.

Shane

GETTING ORGANIZED WITH FINAL CUT PRO DVD...don't miss it.
Read my blog, Little Frog in High Def


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Josh Woll
Re: Down converting HD to SD
on Aug 29, 2011 at 5:22:30 pm

Understood, however, I did not shoot this. Once I find out what the final specs will be, I will let you know.

But, I still don't understand how the footage is looking the way that it does in FCP. Is it because it's taking the 960x720 and converting to 720x480 (16:9).

Sequence file -

Frame Size - 960x720
Vid Rate - 23.98
DVCPRO HD 720p60
HD Pixel Aspect - (960x720)

Quicktime Conversion -

NTSC 720x480 16:9 or NTSC 720x486 16:9

both do not look right. What is wrong here?


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Shane Ross
Re: Down converting HD to SD
on Aug 29, 2011 at 5:29:10 pm

[Josh Woll] "NTSC 720x480 16:9 or NTSC 720x486 16:9"

Neither of those are 16:9. Those are 4:3 formats. There is no SD 16:9 format. Doesn't exist, except in PAL (Europe)...720x576. The US didn't do NTSC 16:9. So you either deliver a 4:3 cropped, or letterboxed final.

Shane

GETTING ORGANIZED WITH FINAL CUT PRO DVD...don't miss it.
Read my blog, Little Frog in High Def


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Chris Tompkins
Re: Down converting HD to SD
on Aug 29, 2011 at 6:21:53 pm

Export using "Current Settings"
Drop that into compressor to create your delivery.

This assumes you know the end target ahead of time.

Chris Tompkins
Video Atlanta LLC


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Josh Woll
Re: Down converting HD to SD
on Aug 29, 2011 at 6:29:53 pm

Thanks guys, will do!


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