Comp Setting problems with AE at DVinfo.net

Corwin Garber · July 12th, 2007, 05:45 PM

Ive been having some trouble with after effects and the comp settings. Ive been shooting footage with the cannon a1 in dv mode, 24f 16:9. Im trying to do some color correction, but when i import the footage into after effects, and put it in a comp it looks like its in the wrong aspect ratio, the picture looks pixated and it says its running at 29.97, instead of 23.976. whats going on? can i fix this ?

Thanks

Rene Roslev · July 12th, 2007, 11:25 PM

In the "Project" window, right click the file, choose "Interpret Footage", "Main" and make sure AE imported it correctly.

In the "Composition" window click the "Toggle Pixel Aspect Ratio Correction" button.

Corwin Garber · July 13th, 2007, 12:11 AM

The toggle pixel aspect button worked perfectly, but when i told ae to interpret the footage as 24.976, the footage got even more liney

Rene Roslev · July 13th, 2007, 01:10 AM

If the footage really is 24f it must be interpreted wrong.
These interlace artifacts on progressive footage can be caused by an attempted pulldown removal.
Make sure "Separate Fields" in the "Interpret Footage", "Main" dialog is set to "Off".

Corwin Garber · July 13th, 2007, 10:36 AM

The seperate fields is set to off- but im still geting the the same thing

Pete Bauer · July 13th, 2007, 01:01 PM

I never shoot SD anymore and it has been a while since I opened up After Effects, so I hope I'm not getting this wrong.

But I think that in SD (miniDV) the XH cameras only record 24F with pulldown. So your file is actually 60i using either 2:3 or 2:3:3:2 (whichever you've chosen in the camera's menu). So you should be able to get rid of the interlace artifact by conforming to 23.976 as you've done and then either letting AE guess the pulldown, or telling it in that same dialog which pulldown to use.

Corwin Garber · July 13th, 2007, 02:07 PM

ah! thank you so much it works perfectly now

July 12th, 2007, 05:45 PM	#1
Corwin Garber Regular Crew Join Date: Mar 2007 Location: Palo Alto, California Posts: 53	Comp Setting problems with AE Ive been having some trouble with after effects and the comp settings. Ive been shooting footage with the cannon a1 in dv mode, 24f 16:9. Im trying to do some color correction, but when i import the footage into after effects, and put it in a comp it looks like its in the wrong aspect ratio, the picture looks pixated and it says its running at 29.97, instead of 23.976. whats going on? can i fix this ? Thanks

July 13th, 2007, 12:11 AM	#3
Corwin Garber Regular Crew Join Date: Mar 2007 Location: Palo Alto, California Posts: 53	The toggle pixel aspect button worked perfectly, but when i told ae to interpret the footage as 24.976, the footage got even more liney Attached Thumbnails

July 13th, 2007, 10:36 AM	#5
Corwin Garber Regular Crew Join Date: Mar 2007 Location: Palo Alto, California Posts: 53	The seperate fields is set to off- but im still geting the the same thing Attached Thumbnails

July 13th, 2007, 01:01 PM	#6
Pete Bauer Wrangler Join Date: May 2003 Location: Eagle River, AK Posts: 4,100	I never shoot SD anymore and it has been a while since I opened up After Effects, so I hope I'm not getting this wrong. But I think that in SD (miniDV) the XH cameras only record 24F with pulldown. So your file is actually 60i using either 2:3 or 2:3:3:2 (whichever you've chosen in the camera's menu). So you should be able to get rid of the interlace artifact by conforming to 23.976 as you've done and then either letting AE guess the pulldown, or telling it in that same dialog which pulldown to use. __________________ Pete Bauer The most beautiful thing we can experience is the mysterious. It is the source of all true art and science. Albert Einstein Trying to solve a DV mystery? You may find the answer behind the SEARCH function ... or be able to join a discussion already in progress!

July 12th, 2007, 11:25 PM	#2
Rene Roslev Regular Crew Join Date: Apr 2007 Location: Copenhagen, Denmark Posts: 49	In the "Project" window, right click the file, choose "Interpret Footage", "Main" and make sure AE imported it correctly. In the "Composition" window click the "Toggle Pixel Aspect Ratio Correction" button.

July 13th, 2007, 01:10 AM	#4
Rene Roslev Regular Crew Join Date: Apr 2007 Location: Copenhagen, Denmark Posts: 49	If the footage really is 24f it must be interpreted wrong. These interlace artifacts on progressive footage can be caused by an attempted pulldown removal. Make sure "Separate Fields" in the "Interpret Footage", "Main" dialog is set to "Off".

July 13th, 2007, 02:07 PM	#7
Corwin Garber Regular Crew Join Date: Mar 2007 Location: Palo Alto, California Posts: 53	ah! thank you so much it works perfectly now