Can we turn a colot movie into black and white?

[Carlos Garcia]

Hello! I was wondering...I own a few colorized movies...I personally hate colorization, I want to see the movie in its original form (and yes I can turn off the color on my TV but I'd rather not have to)...I was wondering...After using DVD Decrypter and creating the VIDEO_TS files...Is there any simple way I can convert the main movie file from color to black and white before burning to DVD? Any info would be appreciated!

CG

[killingspree]

you can easily accomplish the task by playing the avi through an avisynth script:

avisource("youravi.avi")
tweak(sat=0)


with the tweak command you can also adjust the brightness contrast settings. sat=0 just sets the color saturation to 0... or in other words makes it greyscale...
if you want to encode the movies into greyscale just add the second line to your gknot script!

steVe

[scharfis_brain]

why not using greyscale() instead of tweak(sat=0)?

[killingspree]

damn it... didn't know about this command... bummer (:

sure would be smarter but in the end it comes down to the same thing i guess...

steVe

edit: just out of personal interest i've done a short test and it seems to me that greyscale() makes the video a little brighter...

[scharfis_brain]

oh, really?

now it'll be nice to know, which one handles the picture more correct...

greyscale or tweak?

[killingspree]

i probably should have added that i've done this test visualy only and only using two different sources (perhaps 'quick' implies this :-P)


now it'll be nice to know, which one handles the picture more correct...
greyscale or tweak?


sure... anyway i guess this is a question for shodan & Co ... i personally have no idea (:

[edit:] anyway... such a discussion probably belongs to the avisynth section. doesn't belong to the newbie forum in my eyes
[edit2:] damn it... somehow i think we've both talked completely 'around' his question. he wants the mpeg2 converted to greyscale before burning to DVD so he's most likely not even touching avisynth... stupid me.

steVe

[jggimi]

Before you gentlemen go completely off topic (oops, too late), Carlos is asking about MPEG-2 video streams, not AVI. I'd have answered with tweak/greyscale myself, but, even though I don't know the process Carlos is using, I doubt that AVI frameserving is part of it.

[Guest]

Testing shows that GreyScale() introduces a small greenish cast.

[hakko504]

Originally posted by neuron2
Testing shows that GreyScale() introduces a small greenish cast. That should have been fixed in v2.51b (http://sourceforge.net/project/shownotes.php?release_id=146119)