Deflicker / Antiflicker

dragon25 · 3rd August 2010, 00:06

since there are quite a few filters and plugins, which seem to be out of date etc. what are still around that many of you have tested and still use becuase they are still a success on very bad flickering?

Revgen · 3rd August 2010, 00:11

I would suggest that you post a short sample of the video you are having issues with.

dragon25 · 3rd August 2010, 00:12

well that would be an issue as its more of an "out there" qeurie as i do not have a specific video that has issues.

Revgen · 3rd August 2010, 00:15

^It's hard to tell you whether a filter is "out of date". Sometimes older filters work better than newer ones on specific material. It's always a matter of trial and error.

Didée · 3rd August 2010, 00:55

Very true, and generally so. Even when the issue looks "similar" or "the same", the exact characteristics of pixel differences, and change of pixel differences can be different. Which can, of course, change how different filters will react, since the filters themselves work perhaps similar, but in the end, differently.

What always works is: very strong lowpass on a simple temporal average. (Quickest way: resize to very small size, temporalsoften(much) the small, make difference, resize difference back, apply.) That's almost never the optimal way. But almost always an effective nobrainer.

videoFred · 3rd August 2010, 07:25

Fizicks DeFlicker() filter works very effective for me:

But because this is real film, the luminance flicker (I assume caused by the clockwork filmcamera's unstable speed and thus different exposure) is also changing the grain pattern. So to remove the effect completely I had to apply Deflicker() followed by degraining.

Fred.

Sid76 · 7th August 2011, 08:00

I have some video footage which I did with my first video camera I bought 2nd hand back in 1995. (JVC- VHS-C model)
The problem is that scenes done outside, or inside with bright light, are flickering.
This is very annoying since it's random. Not every 2nd frame has lower brightness.
So I am looking for some anti-flicker filter which knows to detect these brightness decrease in some frames and fix it.
Do you have something to suggest? I uploaded the problem to YouTube ( http://www.youtube.com/watch?v=axOde5HjDFQ )

thanks

3rd August 2010, 00:06	#1 \| Link
dragon25 Registered User Join Date: Oct 2007 Posts: 43	Deflicker / Antiflicker since there are quite a few filters and plugins, which seem to be out of date etc. what are still around that many of you have tested and still use becuase they are still a success on very bad flickering?

3rd August 2010, 00:11	#2 \| Link
Revgen Registered User Join Date: Sep 2004 Location: Near LA, California, USA Posts: 1,545	I would suggest that you post a short sample of the video you are having issues with. __________________ Pirate: Now how would you like to die? Would you like to have your head chopped off or be burned at the stake? Curly: Burned at the stake! Moe: Why? Curly: A hot steak is always better than a cold chop.

3rd August 2010, 00:15	#4 \| Link
Revgen Registered User Join Date: Sep 2004 Location: Near LA, California, USA Posts: 1,545	^It's hard to tell you whether a filter is "out of date". Sometimes older filters work better than newer ones on specific material. It's always a matter of trial and error. __________________ Pirate: Now how would you like to die? Would you like to have your head chopped off or be burned at the stake? Curly: Burned at the stake! Moe: Why? Curly: A hot steak is always better than a cold chop.

3rd August 2010, 00:55	#5 \| Link
Didée Registered User Join Date: Apr 2002 Location: Germany Posts: 5,391	Very true, and generally so. Even when the issue looks "similar" or "the same", the exact characteristics of pixel differences, and change of pixel differences can be different. Which can, of course, change how different filters will react, since the filters themselves work perhaps similar, but in the end, differently. What always works is: very strong lowpass on a simple temporal average. (Quickest way: resize to very small size, temporalsoften(much) the small, make difference, resize difference back, apply.) That's almost never the optimal way. But almost always an effective nobrainer. __________________ - We´re at the beginning of the end of mankind´s childhood - My little flickr gallery. (Yes indeed, I do have hobbies other than digital video!)

3rd August 2010, 07:25	#6 \| Link
videoFred Registered User Join Date: Dec 2004 Location: Terneuzen, Zeeland, the Netherlands, Europe, Earth, Milky Way,Universe Posts: 689	Fizicks DeFlicker() filter works very effective for me: But because this is real film, the luminance flicker (I assume caused by the clockwork filmcamera's unstable speed and thus different exposure) is also changing the grain pattern. So to remove the effect completely I had to apply Deflicker() followed by degraining. Fred. __________________ About 8mm film: http://www.super-8.be Film Transfer Tutorial and example clips: https://www.youtube.com/watch?v=W4QBsWXKuV8 More Example clips: http://www.vimeo.com/user678523/videos/sort:newest

3rd August 2010, 00:12	#3 \| Link
dragon25 Registered User Join Date: Oct 2007 Posts: 43	well that would be an issue as its more of an "out there" qeurie as i do not have a specific video that has issues.

7th August 2011, 08:00	#7 \| Link
Sid76 Registered User Join Date: Aug 2011 Posts: 1	I have some video footage which I did with my first video camera I bought 2nd hand back in 1995. (JVC- VHS-C model) The problem is that scenes done outside, or inside with bright light, are flickering. This is very annoying since it's random. Not every 2nd frame has lower brightness. So I am looking for some anti-flicker filter which knows to detect these brightness decrease in some frames and fix it. Do you have something to suggest? I uploaded the problem to YouTube ( http://www.youtube.com/watch?v=axOde5HjDFQ ) thanks