Announcement: Our new CyberLink Feedback Forum has arrived! Please transfer to our new forum to provide your feedback or to start a new discussion. The content on this CyberLink Community forum is now read only, but will continue to be available as a user resource. Thanks!
CyberLink Community Forum
where the experts meet
| Advanced Search >
URGENT HELP for CHROMA KEY
Gunto [Avatar]
Newbie Joined: Jun 11, 2010 15:46 Messages: 8 Offline
[Post New]
I've installed the program and used the "chroma key" option with no problem, it worked great, even with folds on the green screen.
Im using AVI files...
But > Something happend and in almost all of the videos now, it acts TERRIBLE, the chroma just doesnt work, it only removes scattered dots around the color area, no matter how strong the "similarity" bar is...
Its terrible and I can't even remove simple colors..
The surprising thing is that it worked and now doesnt.
Please help!
SHALL I CHANGE VIDEO LIGHTING/SETTINGS?
DOES THIS HAVE ANYTHING TO DO WITH A CODEC OR SOMETHING?
WHAT TO DO?

Thanks
RobertJ/OZ [Avatar]
Senior Contributor Location: Melbourne Australia Joined: Aug 14, 2006 02:26 Messages: 1209 Offline
[Post New]
Hi Gunto,

In this situation, the first thing you should do is to uninstall then reinstall the program, this should correct the problem.
Make sure you have the latest build of PDR8, build 2704.

Robert
Intel i7 930, 16GB ram, Radeon HD 5770 1Gb,Ver. 14.12 Win7 64 bit
Intel i7 7700 HQ, 16 GB ram Nvidia GTX 1050Ti 4GB dual drives 1 TB SSD + 1 TB HDD Win 10

PDtoots
Gunto [Avatar]
Newbie Joined: Jun 11, 2010 15:46 Messages: 8 Offline
[Post New]
thanks
I will try that
NicolasNY
Senior Contributor Location: Caracas Joined: Sep 28, 2008 17:49 Messages: 805 Offline
[Post New]
First take it easy.. its not urgent. Uninstalling its not allways the correct answer. Is the most simple answer i think.
RobertJ/OZ [Avatar]
Senior Contributor Location: Melbourne Australia Joined: Aug 14, 2006 02:26 Messages: 1209 Offline
[Post New]
Nicolas,

In the situation that Gunto has, uninstalling and reinstalling is the correct answer, only if that did not resolve the issue would you investigate other options.

Robert Intel i7 930, 16GB ram, Radeon HD 5770 1Gb,Ver. 14.12 Win7 64 bit
Intel i7 7700 HQ, 16 GB ram Nvidia GTX 1050Ti 4GB dual drives 1 TB SSD + 1 TB HDD Win 10

PDtoots
NicolasNY
Senior Contributor Location: Caracas Joined: Sep 28, 2008 17:49 Messages: 805 Offline
[Post New]
Unistalling and reinstalling its a bad think for a pro software. Its implicate a bad GUI programming. Its not a nice answer for a customer. we have to make that this program its dummy prof.

This message was edited 4 times. Last update was at Jun 12. 2010 02:48

Gunto [Avatar]
Newbie Joined: Jun 11, 2010 15:46 Messages: 8 Offline
[Post New]
Quote:
In the situation that Gunto has, uninstalling and reinstalling is the correct answer, only if that did not resolve the issue would you investigate other options.


Hey
tried that
STILL DOESNT WORK (I attached the example, take a look)!
Im so dissapointed, it gave me such good results two days ago

I uninstalled some codec called K-Lite recently, can this cause the problem?
And if not what to do?
Thanks
[Thumb - CHROMA.jpg]
 Filename
CHROMA.jpg
[Disk]
 Description
The chroma key problem!
 Filesize
182 Kbytes
 Downloaded:
232 time(s)
Dafydd B [Avatar]
Senior Contributor Joined: Aug 26, 2006 08:20 Messages: 11973 Offline
[Post New]
Hi Nicholas and Robert,
Afraid both of you are correct in the answer. In this instance you have to consider the function of the program on an individuals system. Now neither of you know what the system is and neither of you can either control any of the previous selections.

What Robert has suggested is a simple, return to base and make PD8 the latest program installed.

What Nicholas is suggesting is looking at the overall cause to avoid the reinstallation action.

"The surprising thing is that it worked and now doesnt. "
"SHALL I CHANGE VIDEO LIGHTING/SETTINGS? "

You both reacted to different sections of the questions posed.

Gunto:

I'd like a screen shot of the event please. I'd like a diagnostic file. Use Project save as, and save your project - note the SAVE AS instruction. I'd seriously consider getting you to uninstall-reinstall simply to get back and start again position.

I would then want to know what file format you're editing and the individual selections you made. The aim is to know you can repeat the event (and we can as well.

Dafydd

This message was edited 1 time. Last update was at Jun 12. 2010 05:34

Gunto [Avatar]
Newbie Joined: Jun 11, 2010 15:46 Messages: 8 Offline
[Post New]
Quote: Hi Nicholas and Robert,

I'd like a screen shot of the event please.

Here, I attached it in the previous message! Anyways, Here it is again
[Thumb - CHROMA.jpg]
 Filename
CHROMA.jpg
[Disk]
 Description
The problem
 Filesize
182 Kbytes
 Downloaded:
208 time(s)
Dafydd B [Avatar]
Senior Contributor Joined: Aug 26, 2006 08:20 Messages: 11973 Offline
[Post New]
OK,
This is to do with the pixel selected and the intensity level.
Choose better lighting for your screen, avoid the folds and shadow - make your green screen smoother. Selected a different pixel.

This is a backdrop issue and not really a program fault. You need to sharpen your chrome key usage and footage selection.

I also see you're using interlaced footage - not one I'd chose if I could avoid it.

Dafydd

This message was edited 2 times. Last update was at Jun 12. 2010 05:39

Dafydd B [Avatar]
Senior Contributor Joined: Aug 26, 2006 08:20 Messages: 11973 Offline
[Post New]
Please have a practice on a still image and see how you get on.

The video selected, codec compression has a direct effect on the quality of the output file when chrome is applied.

Dafydd
Gunto [Avatar]
Newbie Joined: Jun 11, 2010 15:46 Messages: 8 Offline
[Post New]
Quote:
This is to do with the pixel selected and the intensity level.
Choose better lighting for your screen, avoid the folds and shadow - make your green screen smoother.
This is a backdrop issue and not really a program fault. Dafydd


See, I know it has folds and shadows, but the PD8 "knows" how to work with them (I tested it on the attached footage, that has pretty much the same folds and shadows)

In the problematic footage, when the Intensity level is all the way to the end, the whole person disapears and the dots still stay. That shouln't happen! The dots STILL STAY even when all the rest is removed. And they are realy similar to the selected color
I tried every possible green spot on this vid but the removing areas don't even change....

WHAT IS THE DIFFERENCE BETWEEN THESE TWO VIDS?
[Thumb - CHROMA_GOOD.jpg]
 Filename
CHROMA_GOOD.jpg
[Disk]
 Description
Good keying
 Filesize
62 Kbytes
 Downloaded:
214 time(s)

This message was edited 1 time. Last update was at Jun 12. 2010 05:57

Dafydd B [Avatar]
Senior Contributor Joined: Aug 26, 2006 08:20 Messages: 11973 Offline
[Post New]
Gunto,
How am I expected to assist you on this matter? The system worked for you YES? You have stated above you've removed an item form your PC, a codec pack which may have contained a specific codec which allowed your PC to read the file format. You have stated that Robert's suggestion to uninstall etc didn't work for you. This isn't a program fault - and more by what I read/see to have been caused by your uninstall of a function on your PC.

You also haven't given details of your system (not really needed) or the video files you're taking images from (really needed!) Video and Camera source please. Please use a software called MediaInfo: http://mediainfo.sourceforge.net/en

Dafydd

This message was edited 1 time. Last update was at Jun 12. 2010 06:10

Gunto [Avatar]
Newbie Joined: Jun 11, 2010 15:46 Messages: 8 Offline
[Post New]
Quote:
You also haven't given details of your system (not really needed) or the video files you're taking images from (really needed!) Video and Camera source please. Please use a software called MediaInfo: http://mediainfo.sourceforge.net/en
Dafydd


Here it is attached.
See, my point is that I don't understand what happend.
If the program whould have given this dot result in the first place, I could understand that it can't handle folds in the greenscreen.
But since I've seen it CAN work with them and give a good result, I don't understand why it doesn't work now OR what is the difference between the two vids...
[Thumb - data.jpg]
 Filename
data.jpg
[Disk]
 Description
The problematic video's data
 Filesize
69 Kbytes
 Downloaded:
200 time(s)
babindia
Senior Contributor Location: India Joined: Aug 16, 2007 06:11 Messages: 884 Offline
[Post New]
As Dafydd suggested re-install K-Lite Codec pack. Get the latest. The best way to pin a problem to retrace,one step at a time and check for the problem. PC specs :
OS Windows 10.0 Pro
MB - AS rock Z77 extreme 11
Intel 3770K @ 4.0 Ghz OC
Gskill 32 GB RAM 1800 Mhz
6 TB HDD, SSD bootable
nVidia ASUS GTX 660 Ti
BenQ 22" LCD monitor 1920x1080

Cap'n Kevin
Senior Contributor Location: Chebeague Island, Maine Joined: Dec 26, 2008 20:22 Messages: 2011 Offline
[Post New]
I have seen similar problems in the Preview window playing back certain video files with other users. The colors were off(Green Hues) and not being processed correctly. The picture he provided of the first Chroma key problem seems somewhat similar. Yea Yea, I know he is using a Green screen...hahahahaha! But the mottled spots would appear to be a graphic processing issue.

Updating the video drivers fixed the Playback issue in the Preview screen.

What Graphic card are you using? I know that nothing has changed on your system from your description, so it probably doesn't add up. The Chroma Key function just seemed to stop working, but if it were me....and since I tend to be overly religious about updating my graphic card drivers and a new problem was evident....I would check to see if I had the latest version. It's relatively simple and could correct the issue.

By the way, don't trust Windows to tell you that your drivers are up to date, it can be verified that Windows won't update to a new driver even though a new driver exists. Go directly to the manufacturers website under your graphic card model, Operating System, etc, and download from there.

KEvin

This message was edited 1 time. Last update was at Jun 12. 2010 07:05


Check out PDtoots. PowerDirector Tutorials and more! Over 5,000 Subscribers.
Gunto [Avatar]
Newbie Joined: Jun 11, 2010 15:46 Messages: 8 Offline
[Post New]
Quote: As Dafydd suggested re-install K-Lite Codec pack. Get the latest. The best way to pin a problem to retrace,one step at a time and check for the problem.


OK!
HERE IS SOME DETAILED INFO:
Im using a video & a pic of someone I found.
I attached

1) My PD8 project with the items and the results i got after keying.
2) The video and the results seperately, for the project to work with...

Please send me a project after trying to chroma-key with YOUR PowerDirector, or a screen capture of what you got after keying

THANKS!

P.S
Other video softwares I tried chroma-keyed fine with this footage...
 Filename
Results.bmp
[Disk]
 Description
My Results
 Filesize
853 Kbytes
 Downloaded:
281 time(s)
 Filename
keythis.pds
[Disk]
 Description
My project
 Filesize
96 Kbytes
 Downloaded:
427 time(s)
 Filename
keythis.mpg
[Disk]
 Description
The Video to key
 Filesize
7516 Kbytes
 Downloaded:
410 time(s)
vn800rider
Senior Contributor Location: Darwen, UK Joined: May 15, 2008 04:32 Messages: 1949 Offline
[Post New]
Using your file I could not get any reasonable chroma key effect, in fact no matter how many samples I tried the chroma key effect was useless.

From my limited experience I would say that your green screen is much too varied in colour and texture (folds etc) for PD chroma key to work. If it did so before, I think you were lucky?

Cheers
Adrian Life is really simple, but we insist on making it complicated. (see below)
Confucius
AMD Phenom IIX6 1055T, win10, 5 internal drives, 7 usb drives, struggling power supply.
Gunto [Avatar]
Newbie Joined: Jun 11, 2010 15:46 Messages: 8 Offline
[Post New]
Quote: Using your file I could not get any reasonable chroma key effect, in fact no matter how many samples I tried the chroma key effect was useless.

From my limited experience I would say that your green screen is much too varied in colour and texture (folds etc) for PD chroma key to work. If it did so before, I think you were lucky?

Cheers
Adrian

Have you tried importing the video into a new project or into another software and key?
Were your results dotty?
see, its not just bad keying, when you take the Intensity bar to the end everything is beeing removed BUT the green dots!
And they are green, almost as the selected color. arent they supposed to be removed BEFORE all the other colors....??
Im in despair...

I tried the same footage in Ulead Video Studio, which doesnt have a proffesional chroma-keying option, and it worked.....
Videocentricity
Contributor Location: Long Beach,CA Joined: May 21, 2007 05:37 Messages: 394 Offline
[Post New]
I hope you solve the chroma-key issue.

I use it all the time in PD and its OK.

I have done lots of green screen and blue screen work and here are my tips for getting the best.

By the way here is one video done with green screen under a battery of homemade studio lights. 6 fluorescent 75W 5 foot tubes for the background and six pink pearl 100W lights in a semicircle around the musician.

http://www.videocentricity.net/view/86/tommy-a-blue-mood/

Its VERY difficult to get good FLAT lighting of the same luminance all over.
Its the change in luminance you are seeing as black when you apply the chroma setting.



heres a video

http://seemyworldonvideo.com/view/664/paris-bleu/

made on a blue screen background where the lighting was flat cloudy daylight from a window lighting both the subject (me) and the background. There were NO room lights at all. (The window was behind the camera)

I have also used a dark red blanket under daylight. The color does not matter. The lighting is everything !

Typically when doing green screen, your background isn't perfectly lit so the green is not the same luminance all over. When you do the chroma-key you can get dark areas usually further away and below where the eye-dropper was touched.
So, 99% of the problem is the human eye can't detect small changes in luminance across a lit backdrop, so it all looks OK until you do the chroma-key. I suggest less is better. Dont try to overlight the backdrop with lots of artificial lights, thats where flaring occurs and the eye cant tell. I even tried using a Weston light meter to measure but the change is so slight, and the effect so visible.

Best of Luck


If you can't solve the problem - Change the problem
Powered by JForum 2.1.8 © JForum Team