a clip from my short film red ribbon and the pulsating problem with reds at DVinfo.net

Marlon Torres · October 26th, 2005, 10:51 PM

http://www.citizencine.com/films/redribbon.mov

watch for the red jeep and notice how it starts to flicker, how can i fix it?!

Pete Bauer · October 27th, 2005, 12:19 PM

Sorry I won't be able to view your clip until I get home this evening. Here's a thread from last week on the same topic, though:

http://www.dvinfo.net/conf/showthread.php?t=53035

No definitive answer yet, but kind of suspect that it has something to do with over-saturation of colors or a compression anomaly.

Ash Greyson · October 27th, 2005, 11:00 PM

Was this shot in 24P, 24PA, 30P or 60i? I usually see this problem in overexposed areas of red (sometimes blue) generally when there is a frame rate conversion or deinterlacing. The best thing to do is to watch your expoure and settings to begin with. It looks like the clip is color corrected. BE CAREFUL WITH REDS!! This is not an XL2 prob, it is a DV problex, the DVX is actually the worst offender. Sometimes Magic Bullet and other programs can make the reds go crazy. If this happens to me I curb the reds, output THAT file and color correct the file with supressed reds.

This problem is also accentuated when viewing on an LCD or other progressive source like an HDTV. One thing you can try is a chroma blur on the red channel...

ash =o)

Daniel Wojtowicz · October 28th, 2005, 03:25 PM

did a test with my camera. Although it was in auto mode only i did not get a colour surge.

http://polishdan.com/red2.mov

here is how it turned out.

October 26th, 2005, 10:51 PM	#1
Marlon Torres Major Player Join Date: Apr 2005 Posts: 230	a clip from my short film red ribbon and the pulsating problem with reds http://www.citizencine.com/films/redribbon.mov watch for the red jeep and notice how it starts to flicker, how can i fix it?!

October 27th, 2005, 12:19 PM	#2
Pete Bauer Wrangler Join Date: May 2003 Location: Eagle River, AK Posts: 4,100	Sorry I won't be able to view your clip until I get home this evening. Here's a thread from last week on the same topic, though: http://www.dvinfo.net/conf/showthread.php?t=53035 No definitive answer yet, but kind of suspect that it has something to do with over-saturation of colors or a compression anomaly. __________________ 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!

October 27th, 2005, 11:00 PM	#3
Ash Greyson Trustee Join Date: May 2003 Location: Tulsa, OK Posts: 1,689	Was this shot in 24P, 24PA, 30P or 60i? I usually see this problem in overexposed areas of red (sometimes blue) generally when there is a frame rate conversion or deinterlacing. The best thing to do is to watch your expoure and settings to begin with. It looks like the clip is color corrected. BE CAREFUL WITH REDS!! This is not an XL2 prob, it is a DV problex, the DVX is actually the worst offender. Sometimes Magic Bullet and other programs can make the reds go crazy. If this happens to me I curb the reds, output THAT file and color correct the file with supressed reds. This problem is also accentuated when viewing on an LCD or other progressive source like an HDTV. One thing you can try is a chroma blur on the red channel... ash =o)

October 28th, 2005, 03:25 PM	#4
Daniel Wojtowicz New Boot Join Date: Oct 2005 Posts: 20	did a test with my camera. Although it was in auto mode only i did not get a colour surge. http://polishdan.com/red2.mov here is how it turned out.