5DMK2 convert question at DVinfo.net

Murat Engin · May 10th, 2011, 08:29 AM

Hi DVINFO members,

I am a new member Dvinfo and Neo(HD) Family. I have a question.

1-Canon 5dmk2 files put to After Effects. (direct, cancel the HDLINK convert)
2-AE color bit depth: 16 bpc(edit,fx...etc)
3-Render ( Cineform Avi, RGB+Alpha ,Trillions of color +,Film scan 2, Enable 4:4:4 encoding )
4-result : 4:2:0(8 bit Canon file) to 4:4:4 (12bit CF avi)

Is that correct ?

or

1-Firstly HDLINK convert(4:2:0 to 4:2:2)
2-AE color bit depth: 16 bpc(edit,fx...etc)
3-Render ( Cineform Avi, RGB+Alpha ,Trillions of color +,Film scan 2, Enable 4:4:4 encoding )
4-result : 4:2:0(8 bit Canon file) to 4:4:4 (12bit CF avi)

Is that?

I'm confused..!

Thank you.

David Newman · May 10th, 2011, 11:23 AM

Neither works like you imagine. You can't get 4:4:4 from a 4:2:0 source, although you can guess at the missing data to smooth out chroma artifacts. The HDLink 4:2:0 to 4:2:2 is doing this type of chroma artifact reduction. When decoded it will optionally do 4:2:2 to 4:4:4 chroma smoothing (if you select "Filter 422 to 444" in the "C" systray control). So HDLink does all you need, there is no gain in baking it all into a new 4:4:4 file which is twice as big without twice the information. If you go with you first approach, using CS directly, where is your 4:2:0 to 4:4:4 interpolation occurring? Short of add filters, AE or PPro makes no attempt to fixing chroma 4:2:0 artifacts, so you would end up baking the artifacts into a large 4:4:4 file -- zero gain, backwards step.

Murat Engin · May 10th, 2011, 12:17 PM

Thanks ....

1-
2-
3-
4-

please...

Martin Guitar · May 10th, 2011, 12:45 PM

1. Drag and drop your 5D files into HDLink for conversion
2. Done.

May 10th, 2011, 08:29 AM	#1
Murat Engin Tourist Join Date: May 2011 Location: Turkey/Istanbul Posts: 3	5DMK2 convert question Hi DVINFO members, I am a new member Dvinfo and Neo(HD) Family. I have a question. 1-Canon 5dmk2 files put to After Effects. (direct, cancel the HDLINK convert) 2-AE color bit depth: 16 bpc(edit,fx...etc) 3-Render ( Cineform Avi, RGB+Alpha ,Trillions of color +,Film scan 2, Enable 4:4:4 encoding ) 4-result : 4:2:0(8 bit Canon file) to 4:4:4 (12bit CF avi) Is that correct ? or 1-Firstly HDLINK convert(4:2:0 to 4:2:2) 2-AE color bit depth: 16 bpc(edit,fx...etc) 3-Render ( Cineform Avi, RGB+Alpha ,Trillions of color +,Film scan 2, Enable 4:4:4 encoding ) 4-result : 4:2:0(8 bit Canon file) to 4:4:4 (12bit CF avi) Is that? I'm confused..! Thank you.

May 10th, 2011, 11:23 AM	#2
David Newman CTO, CineForm Inc. Join Date: Jul 2003 Location: Cardiff-by-the-Sea, California Posts: 8,095	Re: 5DMK2 convert question Neither works like you imagine. You can't get 4:4:4 from a 4:2:0 source, although you can guess at the missing data to smooth out chroma artifacts. The HDLink 4:2:0 to 4:2:2 is doing this type of chroma artifact reduction. When decoded it will optionally do 4:2:2 to 4:4:4 chroma smoothing (if you select "Filter 422 to 444" in the "C" systray control). So HDLink does all you need, there is no gain in baking it all into a new 4:4:4 file which is twice as big without twice the information. If you go with you first approach, using CS directly, where is your 4:2:0 to 4:4:4 interpolation occurring? Short of add filters, AE or PPro makes no attempt to fixing chroma 4:2:0 artifacts, so you would end up baking the artifacts into a large 4:4:4 file -- zero gain, backwards step. __________________ David Newman -- web: www.gopro.com blog: cineform.blogspot.com -- twitter: twitter.com/David_Newman

May 10th, 2011, 12:17 PM	#3
Murat Engin Tourist Join Date: May 2011 Location: Turkey/Istanbul Posts: 3	Re: 5DMK2 convert question Thanks .... 1- 2- 3- 4- please...

May 10th, 2011, 12:45 PM	#4
Martin Guitar Regular Crew Join Date: Mar 2007 Location: Los Angeles, CA Posts: 115	Re: 5DMK2 convert question 1. Drag and drop your 5D files into HDLink for conversion 2. Done.