Doom9's Forum - View Single Post - Correcting a film that was developed with a colour fault

Doorn9 · 25th July 2019, 18:29

Hi Fred, and others.

GamMac was immediately totally brilliant at getting the colour consistent! The example script was very helpful, and quite easy to adapt to my needs. I had already read warnings that scale=2 was too aggressive in most cases, so I changed it to scale=1. And I chose the green channel as lock channel.

What I could not get right was the deflickering, which is apparently a side-effect of this filter if used right. Obviously, I didn't get it *quite* right, but my normal method worked well - Fizik's deflicker filter on a manipulated source, where I choose a reference frame, insert that 5 times before every image, deflicker and remove the helper frames again.

So, many thanks to all who responded, and the final result can be seen here, on the right, in comparison with the best I had so far on the left (*).
http://www.vandoorn.tv/doom9/022-wit...ith-gammac.avi
Very happy with the result. Better than all my tries at getting it watchable!

(*) with too garish colours; pushing saturation sometimes helps in disguising flaws, that's why it was overdone.

25th July 2019, 18:29	#27 \| Link
Doorn9 Wouter van Doorn Join Date: Jul 2019 Location: Central Scotland Posts: 13	Hi Fred, and others. GamMac was immediately totally brilliant at getting the colour consistent! The example script was very helpful, and quite easy to adapt to my needs. I had already read warnings that scale=2 was too aggressive in most cases, so I changed it to scale=1. And I chose the green channel as lock channel. What I could not get right was the deflickering, which is apparently a side-effect of this filter if used right. Obviously, I didn't get it quite right, but my normal method worked well - Fizik's deflicker filter on a manipulated source, where I choose a reference frame, insert that 5 times before every image, deflicker and remove the helper frames again. So, many thanks to all who responded, and the final result can be seen here, on the right, in comparison with the best I had so far on the left (). http://www.vandoorn.tv/doom9/022-wit...ith-gammac.avi Very happy with the result. Better than all my tries at getting it watchable! () with too garish colours; pushing saturation sometimes helps in disguising flaws, that's why it was overdone. __________________ Wouter Last edited by Doorn9; 6th August 2019 at 22:11.