16-235 Confusion - Page 2 at DVinfo.net

Go Back   DV Info Net > Cross-Platform Post Production Solutions > Distribution Center > Blu-Ray Authoring


Reply
 
Thread Tools Search this Thread
Old October 23rd, 2009, 09:41 AM   #16
Inner Circle
 
Join Date: Nov 2006
Location: Tallahassee, FL
Posts: 4,100
Are your project settings still 8-bit with 2.22 gamma? I think you are beginning to understand why I use linear gamma. Values below zero are B-L-A-C-K. Always.

And yes, there is a filter you can use to clip. It's is "Sony Broadcast Color" and use the "Extremely Conservative" setting.
__________________
DVX100, PMW-EX1, Canon 550D, FigRig, Dell Octocore, Avid MC4/5, MB Looks, RedCineX, Matrox MX02 mini, GTech RAID, Edirol R-4, Senn. G2 Evo, Countryman, Moles and Lowels.
Perrone Ford is offline   Reply With Quote
Old October 23rd, 2009, 10:56 AM   #17
Regular Crew
 
Join Date: Mar 2009
Location: Dusseldorf
Posts: 32
Okay, I'll try that filter, thanks.
I haven't changed my bit depth and my gamma at all because I have several hundred clips on my timeline, all of which are graded individually. I will NOT redo this.

You know what's interesting. I loaded the video file into Virtualdub, and guess what - it doesn't look washed out the way it does in all the media players I've tried. I used "Copy source frame to clipboard" to check it out in Photoshop, and the values are good. I get blacks and whites exactly the way I want.

So I'm now thinking that for some reason those other media players don't do a conversion from 16-235 to 0-255.
Chris Gotzinger is offline   Reply With Quote
Old October 23rd, 2009, 11:08 AM   #18
Regular Crew
 
Join Date: Mar 2009
Location: Dusseldorf
Posts: 32
I was right! I just played the file in Media Player Classic and checked out the properties of the decoding filter that was used, "MPV Decoder":
There is a "TV->PC" button, and once I pressed it the video played back with correct black and white levels, going from washed out to looking the way I want.

This leads me to believe that the video will play correctly on a Blu-ray hardware player.
Chris Gotzinger is offline   Reply With Quote
Old October 23rd, 2009, 11:11 AM   #19
Inner Circle
 
Join Date: Nov 2006
Location: Tallahassee, FL
Posts: 4,100
Quote:
So I'm now thinking that for some reason those other media players don't do a conversion from 16-235 to 0-255.
And why should they? Again, this goes back to what a player EXPECTS. If you have a player expecting a TV level signal (16-235) it will set 16 to BLACK and 235 to WHITE. Anything outside of those numbers is clipped. If the player EXPECTS 0-255 and you GIVE it 16-235, it's going to look washed out.

Your computer monitor is EXPECTING 0-255, but your video signal from the NLE is giving it 16-235 which is legal for broadcast. It only looks right on your monitor when you input illegal values which push the signal closer to 0-255.

A DVD player or TV *expects* 16-235 and it does NOT expect anything outside those boundaries. So when you create your mpeg2 or AVC for DVD or BluRay, it's going to encode to 16-235. That is PURE BLACK on TV and PURE WHITE.

Does this make sense?
__________________
DVX100, PMW-EX1, Canon 550D, FigRig, Dell Octocore, Avid MC4/5, MB Looks, RedCineX, Matrox MX02 mini, GTech RAID, Edirol R-4, Senn. G2 Evo, Countryman, Moles and Lowels.
Perrone Ford is offline   Reply With Quote
Old October 23rd, 2009, 11:39 AM   #20
Regular Crew
 
Join Date: Mar 2009
Location: Dusseldorf
Posts: 32
It makes perfect sense now indeed. Awesome!
Chris Gotzinger is offline   Reply With Quote
Old October 23rd, 2009, 07:34 PM   #21
Major Player
 
Join Date: Sep 2009
Location: Sydney, Australia
Posts: 201
I am not familiar with Vegas but it is simple in Edius

simlpy tick "safe color" and all below 0 and above 100 is clipped
http://www.videoproductions.com.au/e...safe-color.avi (7mb)

and if you don't want clipping, then apply YUV curve filter and adjust
__________________
Anton Strauss
www.videoproductions.com.au
Anton Strauss is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Cross-Platform Post Production Solutions > Distribution Center > Blu-Ray Authoring

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 11:27 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network