Anybody know how to correctly set the hue,gamma etc

[baker]

Does anybody know how to set the hue gamma etc on my cap card?

I was recently having a problem nd think this is the reason.

Anylinks to whre this is explained or anything?

Plz answer even if your not sure.


Baker

[BJ_M]

adjust gamma
adjust your monitor gamma untill the strips below looks like four even strips of colour:





This is what the test strip would look like if the gamma is set too high.



An example of the test strip with the gamma set perfectly



The test strip as viewed on a Windows display that typically has the gamma set too low.



for video work - this acual value shoulds be around 1.7-1.9 -- but there is a lot of debate and non conformity on this issue (some say 2.2 should be used) .. basicaly it boils down to the fact that proper gamma on a pc monitor is out compared to a TV -- mac's out of the box usually are the closest (if monitor set correct) .. and color temp set for video ..

adobe have a app for adjusting gamma on start - but i have found it to be incorrect. i have a sencore digital color analyzer which we use to calibrate all monitors on a weekly basis including our broadcast and hdtv monitors..
sgi has a built in color analyzer with the monitor i have ..


to find out what your current settings are use this chart in a dark room - step back 3 form screen and squint at chart .. the image that is blended to background most closely is your setting.






adjust hue and brightness

look at the chart -

Under the 0% column, there should be NO color, just plain bright white. If it is gray or dingy or has a color cast, adjust your monitor until that area is plain white.
Under the 100% column, the colors should be recognizeable process colors with a full rich representation. If they appaer washed out, your monitor is probably set too bright.



the above is basic set up .. for correct setup to match your tv with your pc monitor you will have to output or create a colorbar and grayscale svcd or dvd or vcd and play it on your tv and set them both up ..

the phosphers in a pc monitor are different than the on a tv - so looking good on one doesnt always mean looking good on the other .. level of video on the input side are either 7.5 (normal) or 0 -- this relate to black levels .. and i can get a lot of in depth on this subject .. color correction in video is a very specialized subject..


anyway -- best explanation on how to set up hue/brightness and saturation more in depth is here (as it relates to video work) ...

http://www.videouniversity.com/tvbars2.htm



i can make up a vcd and/or svcd with a complete set of test audio and video patterns if someone wants but i suggest going out and buying the (cheap version)

http://www.itworks.com/products/DVDref-suite.htm

or

the best really :

Video Essentials http://www.videoessentials.com/index_1.htm
(and reading everything on Joe Kanes web site above)

[BJ_M]

now that both your computer monitor and Tv look good ..

you have to set up your cap card ..

there is no real other way around this but to capture some of the test samples i posted above and then do a A/B compare ... and adjust cap card to match ..

i dont know which card you are using or its settings that are possable ,,

[baker]

It was for my capture card so I am planing to capture these and convert to a picture vcd.

I Have a problem with my capture card and believe it could be one of my settings.

If you look for the post by me which say I now now have a vid you can see a vid of my problem.

If you know much about this stuff perhaps you can diagnose it.

Baker

[ImaWeTodd]

It would be great if this could be put in the HowTo or Guides Forum.

[BJ_M]

you could also do it the right way w/ a vectorscope -- its easy to use ..

http://www.freedownloadscenter.com/Multimedia_and_Graphics/Video_and_Animation_Tools/VScope.html

[ImaWeTodd]

Easy to use ?!?

Now that would be a great guide.

I actually can produce a color bar from my dvcam, but gawd, trying to get the scope right seems to be an impossible task.

I do have the Joe Kanes dvd, which I've used on my TV. I'll give that a try on my capture card.

Here's the question: If I want my dvds to look like studio dvds, what do I do? I assume I should adjust my source/capture card to get the best colors, detail, white / black balance, etc. Are commercial DVDs then adjusted to show well on a poorly adjusted TV? Do they shoot for everything to look good on a profeshional video monitor, or for it to look ok on a TV with the brightness and contrast cranked up, and glowing red, all in a sunny room?

I'm looking for the baseline for my encoded source. From there I can adjust my display devices.

[BJ_M]

commercial DVDs are adjusted to show well on a broadcast monitor - though i use a electronic color calibrator to give me the exact values as well as a scope(s) -- the eye is the final test

i also make mpeg files for a specific video projection type system as one offs more or less .. the color and such is calibrated for that unit ..