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Parisa Rezvani
Converting 720x576 25fps PAL to 23.976 1920x1080
on Sep 17, 2012 at 9:12:06 pm

Hi all,

I got some stock footage that is at 25 fps PAL. But I'm working in a project that is mostly 23.976 in 1920x1080. So I need to convert the footage to those specs. I've run a couple of tests where I brought one clip into Cinema Tools and conformed it to 24 fps. And then another one, where I've brought a duplicate clip into FCP, and conformed it that way. But my question is what is the best way to change the aspect ratio to 1920x1080 since the PAL footage is at 720x576?

I've already attempted to use MPEG Streamclip, where I selected "De-interlace" and maintained Pro Res 422 (HQ) but selected 1920x1080, but I'm not sure if that's the best method.

Any advice/input?

Thanks in advance for your time and help.

Sincerely,
Parisa


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Shane Ross
Re: Converting 720x576 25fps PAL to 23.976 1920x1080
on Sep 17, 2012 at 9:19:21 pm

ASPECT RATIO is not dimensions. 4:3...16:9. Those are aspect Ratios. PAL is 16:9...1920x1080 is 16:9...so you are good there. But you need to change the PIXEL DIMENSIONS. You need to upconvert SD to HD. For that you use Compressor. Change the frame size in the Inspector, and then turn on the FRAME CONTROLS, and set them all to BEST. This will take a while.

Or...use a capture card like the AJA Kona 3 to capture the source from tape and upconvert that way. It's real time, and real good!

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


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Dave LaRonde
Re: Converting 720x576 25fps PAL to 23.976 1920x1080
on Sep 17, 2012 at 9:25:06 pm

Let's clarify a bit about the aspect ratio.
The stock footage is 720x576. It's standard definition, but is it 4x3 or 16x9? It can be either.

And a second question: how good do you want this footage to look in a 1920x1080 sequence? You would be making it much larger, which means a loss in image resolution.

Dave LaRonde
Former Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Parisa Rezvani
Re: Converting 720x576 25fps PAL to 23.976 1920x1080
on Sep 17, 2012 at 9:41:19 pm

Thanks for the tip, Shane! I will try compressor to change the pixel dimensions.

To answer your questions, Dave: the footage is 16x9 at 720x576. And secondly, I still want to look good. But yeah, I understand that enlarging it would change the quality. Do you recommend anything that would give me a good balance?

Sincerely,
Parisa


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Parisa Rezvani
Re: Converting 720x576 25fps PAL to 23.976 1920x1080
on Sep 17, 2012 at 9:55:05 pm

Shane,

In Compressor, should I maintain the pixel aspect, PAL CCIR 601, or would it be better to change it to what most of my footage is in the project?

Thanks for the help!

Sincerely,
Parisa


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Alex Elkins
Re: Converting 720x576 25fps PAL to 23.976 1920x1080
on Sep 19, 2012 at 1:21:50 pm

[Parisa Rezvani] "In Compressor, should I maintain the pixel aspect, PAL CCIR 601, or would it be better to change it to what most of my footage is in the project?"

Change pixel aspect ratio to square pixels.

Compressor can also do the 25 to 23.98 conversion at the same time. Just make sure you set your Video settings to 23.98 in the Encoder Tab, and Rate Conversion to 'Best' in the Frame Controls tab.

Alex Elkins
Twitter: @postbluetv
http://www.postblue.tv
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Latest work: Greyhounds in Motion at 500fps
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Parisa Rezvani
Re: Converting 720x576 25fps PAL to 23.976 1920x1080
on Sep 19, 2012 at 6:21:35 pm

Ok thanks for all the help! I got it in the system and it works great.

Sincerely,
Parisa Rezvani


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Dave LaRonde
Re: Converting 720x576 25fps PAL to 23.976 1920x1080
on Sep 18, 2012 at 1:04:56 am

There is a plugin from Red Giant Software Called Instant HD. It can help with the resolution problem. It will not cure the resolution problem.

Dave LaRonde
Former Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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