Pixellation Issues in Converting 720p to 1080p ?


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Pixellation Issues in Converting 720p to 1080p ?
by Rajarshi Basu on Feb 8, 2008 at 2:52:37 pm

hi,

On converting HDV 720p to 1080p using Compressor...the image is looking alright on the computer monitor.

But I need to show the film on a large screen for theatrical.

Will the pixels show up... or the image quality suffer noticeably on a larger display ?

What about Instant HD plugin ??

Raj

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Re: Pixellation Issues in Converting 720p to 1080p ?
by Jeremy Garchow on Feb 8, 2008 at 4:16:33 pm

Have you tried it?

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Re: Pixellation Issues in Converting 720p to 1080p ?
by Rajarshi Basu on Feb 8, 2008 at 4:37:02 pm

No...I'm downloading the trial version and checking ...

but logically 720 is 720*1280
and 1080 is 1080*1920

so changing from 720p to 1080p is going to induce pixellation, how is Compressor going to change that ??

Raj

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Re: Pixellation Issues in Converting 720p to 1080p ?
by Jeremy Garchow on Feb 8, 2008 at 4:45:27 pm

[Rajarshi Basu] "so changing from 720p to 1080p is going to induce pixellation, how is Compressor going to change that ?? "

Have you tried doing the conversion in Compressor yet?

Have you tried taking your 720p timeline, putting in a 1080 timeline, scaling and render?

You are not upconverting, you are cross converting. It's a much better process than going sd to hd.

Jeremy

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Re: Pixellation Issues in Converting 720p to 1080p ?
by Chris Poisson on Feb 8, 2008 at 6:02:23 pm

Compressor can do the cross-conversion just fine, but you should do some short tests, and you should view on at least a 23" Apple Cinema Display with your video output set to "Cinema display full screen"

An MXO or a real HD monitor would be even better.

When you do your Compressor tests, turn on the frame controls and boost antialiasing to say 50 or so. It will take a lot longer but it works fine.

Have a wonderful day.

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