Black & White

[hobbes78]

Hi everybody!

I've been using Guardian Knot for a while and I've been getting rather good results with it. However I was wondering if someone knows if a special procedure other than the one specified in the guides here in doom9.org should be used on black & white movies. The fact is that there's only one colour channel in this case (luminance), so it seems we could take advantage of it, although I don't know if a file three times smaller would be obtained; even if not, a great size reduction seems to be possible.

Thanks for any ideas in advance!

[hakko504]

Just add the line grayscale() to your script as the last step before encoding, and you'll get better results. You can also use Tweak(sat=0.0)

[N_F]

Just like you I believed B&W movies would compress very well before I encoded some. Unfortunately the opposite is usually true, mostly I guess because B&W movies often are very noisy.

I believe it greyscale() ;)