Green Screen Artifacts??

I have a MacBook Pro:
Model Name:    MacBook Pro
Software OS X 10.8.3 (12D78)
Processor Name:    Intel Core i7
Processor Speed:    2 GHz
Number of Processors:    1
Total Number of Cores:    4
Memory:    4 GB
Display:
15-inch (1440 x 900)
Intel HD Graphics 3000 384 MB graphics
I opened my computer this morning and there were green screen discolourations. I've heard that they're called artifacts but I'm not sure how to make them stop. Earlier this morning they made reading materials rather difficult but now they have simply faded into vertical lines across the screen. I'm not entirely sure what to do in order to fix it. I've reset the PRAM/SMC and the problem still persists.

A new Mac is in warranty for 1 year from the date of purchase.
Contact Apple.
AppleCare: 1-800-275-2273

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Is green screen possible with Mini DV?

Hi. I have a Canon XL2.
I want to use some green screen effects in my next doco to liven up some talking heads I am to record.
Is MiniDV even an option for this? I have heard the mini dv compression causes too many artifacts.
Please assume I have read all there is to read on the best practice for green screen and will have good lighting for the screen and the talent.
Thank you.

There are tricks to getting a better key with DV - what are you planning to use to do your keying?
Example - here's a matte generated from DV footage with my best effort:
and here's the same with a Digibeta SDI source:
both done in Shake.
Patrick

Green screen with AVC_Intra 100

Been using the hpx300 for approx two months mostly in 720p with great results. Just wraped our first true HD green screen shoot using avc-intra 100 at 24p with the intent of producing a white background mac-ad type, 5 min talking head corporate piece in SD. I had the camera mounted at 90 degrees to capture the 1920 pixels of subjects head-to-toe so I could then manipulate individual zoom and placement in post within a SD timeline. I've got two issues: one is that the images in post seem noisy, and any movement, as in subjects walking across screen, is a total mess - I say seem because all recording and playback on location looked just fine on a 1920x1200 monitor via blackmagic i/o box. I normally do basic editing in premiere with much help from AE for composting and color correction etc. Keylight has always worked great in the past. I must have something wrong with settings in the avc-intra HD content? Secondly, workflow is a bit convoluted... Keylight doesn’t apply in premiere, and AE doesnt do avc-intra. The workaround is to export avc-intra premiere timeline to AE and key that. In theory it should work just fine, but again my images are just noisy. Could this PR to AE workflow degrade image quality? Any suggestion greatly appreciated! Thanks, Matt

Sounds like the color space conversion is simply intensifying compression artifacts that are there in any case. It's a compressed format, after all. You might need to check some specific CoDec options to get a better conversion. Short of that I have no idea, since I don't have access to such files ATM, but if you can provide a short clip somewhere (rapidshare, yousendit etc., ca. 30-100 MB), I might have a look and be able to offer more specific guidance how to work around the issue.
Mylenium

Getting cleaner edges with 4:1:1 miniDV green screen footage

I understand 4:1:1 miniDV footage is not so good for green screen stuff. From what I've gathered searching google, it helps to blur the U and V channels before applying a color key. How do I do that in After Effects? Does anyone know any other tricks?

You can transform the colorspace using the Channel Combiner effect. Just don't forget to transform it back after you've done your blurs. You can further refine this technique by separating the transformed channels using e.g. Shift Channels and treating each component separately. You can properly recombine them by using e.g. the Add (RGB) or Luminance (YUV) blendmode. Anothr possible trick is to duplicate the layer and use blendmodes like Color in combination with your blur, then key the resulting pre-composition. Still, the best solution (if you do this regualarly) is to look into some specialized deartifacting plugins. A good generic point to start is RevisionFX SmoothKit collection which offers a wide selection of adaptive blurs that can be used to even out the background (Median) or soften block artifacts after the keying. Plus it has the advantage of a great variety of otehr creative uses... Also check out Primatte and its built-in deartifacting mechanisms. I'm sure you can also find simialr complementary tools from other plugin vendors.
Mylenium

Green screen and card

guys,
Ive done this before but i need to key out a green screen and green card what is the best way of doing this with best effect? Would motion or shake be better for this or should i stick with FCP?
Cheers
Dan

what you are probably seeing is compression artifacts causing edge chattering. the best, really only solution is to track a mask in to cut the hole rather then trying to key anything. of course if you could go back and reshoot and send the camera into something like a MXO2 and capture to ProRes / uncompressed would of been best, but nothing you can do now. the other problem is probably that the trackers aren't that good - something like mocha can eat thru this pretty easily. you may wind up doing this by hand.

FCPX green frames/artifacts and dropped frames

I have been trying to use FCPX for a couple of weeks now, but haven't been able to. I constantly get green frames/artifacts and dropped frames during playback AND export regardless of using optimixed or proxy media. I am importing mp4 quicktime files, in case that is important.
I am using:
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OSX 10.6.8
Intel Core 2 Duo @ 2.26 ghz
2 gb ram
Nvdidia GeForce 9400M w/256 vram
I know that it is reccommended I have 4 gb ram, but I meet the minimum requirements and cannot even use the program! Would upgrading to 4-8gb ram resolve this issue? Or is my processor the culprit?
Any help is greatly appreciated.

You DEFINITELY need to upgrade your memory to 8GB, etc. Otherwise you will not likely be able to get much real work done at all ... but ... that is likely not exactly the problem you are experiencing now . Since you are talking about bringing in MP4 files, I am thinking you did not get them from a tape-based camcorder. If you did, then they were converted to MP4 afterwards somewhere. Can you play the MP4 files in Quicktime and not see any green screens? If so then have you tried using the FCP X File/Import ... Files command to bring them into FCP X? I have used this with MP4 files without a problem. If Quicktime can play them okay without green frames, and FCP X cannot then the problem does seem to be in FCP X. Are your preferences set to use optimized media? If so then FCP X will convert the files to ProRes and the timeline playback should be okay. There are other "green frames" discussions here that you could also reference. These are just some thoughts.

MSI GTX580 Twin Frozr II OC Edition; Battlefield 3 green squares artifact crash.

Greetings respected moderators!
I came to your forum because I seek your help. Allow me to explain my problem. Today when I've played Battlefield 3 after a while my game crashed - it froze in place. The screen displayed small green square artifacts all over the screen. I had to force shut down the game with task manager in order to resume using my computer. I've restarted my game and continued playing it until it happened two more times in a short amount of time. Then I've decided to look into it.
This is what my screen looked liked, although this image is not mine. I'm only using it as a reference.
The most interesting thing is that I've only had this happen to me(exactly the same type of crash) once or twice in the past when I still had the old drivers. Back then I was using High video settings in my game. About a week or so ago I formatted my computer and installed the latest NVIDIA drivers - 310.90. This time I was using the lowest video settings in my game. Yet the game crashed more than it did with the higher settings. This puzzles me...
I did some research on the internet and what I've found out is that this type of crash is very commonly associated with GTX 580. Users with the same problems posted on many forums and the replies they got were all sorts of possible reasons why this crash occurs. One of them is being overheating. I've tested that and ran my game the fourth time after my third crash, and the temperatures of the GPU didn't go over 70°C. Then I've also did a stress test with MSI Kombustor and the temperature stayed under 70°C. So I believe I can exclude overheating.
The next very common thing that users wrote was that the GTX 580's core voltage was set too low by factory default, causing this type of crash with DirectX 11 games while playing them. By manually increasing the voltage it seemed that it was the most common fix for the problem. According to MSI Afterburner my core voltage is 1025 and people on the forums suggested raising it to 1100, therefore fixing their crashing.
Third thing that I've read was that this is caused by the latest 310.90 drivers. Some users with the problems reverted to the old drivers and the crashing stopped, while it didn't fix it for others.
Now my questions is: Why did my game start crashing all of a suddenly, in such way on lowest video settings and so frequently, when I could play it for months on end with higher settings without a single crash?
I do not want to overclock my GPU and unfortunately I do not remember which were the NVIDIA drivers I was using before I formatted my computer.
I thank you in advance, wise moderators of this forum and hope that you will be able to help me.
Have a wonderful day!

Good day to you Svet!
Like I've wrote before, the only changes I did to my computer were the updates that came with Live Update 5. I only installed driver updates through that. I did it regularly ever since I've got my computer 7 months ago. Back in those 7 months the crash only happened once or twice.
Then a week ago I formatted my computer completely, reinstalled Windows 7 and also applied all of the available updates that came with Live Update 5. I've also downloaded the latest NVIDIA GPU drivers. The game worked flawlessly for the whole week until it started crashing yesterday.
Also I had no idea that the overheating could start at under 70°C, especially because I have two extra fans installed, one in the front and one in the back of my case so that there is regular flow of cold air, which enters in the front and exits at the back.

Any tricks for shooting green screen with C300?

Any tricks to shooting green screen with C300?

Sounds like the color space conversion is simply intensifying compression artifacts that are there in any case. It's a compressed format, after all. You might need to check some specific CoDec options to get a better conversion. Short of that I have no idea, since I don't have access to such files ATM, but if you can provide a short clip somewhere (rapidshare, yousendit etc., ca. 30-100 MB), I might have a look and be able to offer more specific guidance how to work around the issue.
Mylenium

How do i use my own image with keying (or green screen)

how do i use my own image witrh keying (or green screen)

Put your sky clip on a layer below the clip you want to key. One or the other will be a connected clip. Apply the Keying filter to foreground clip (the one with the green screen). The green will be seen as transparent and the sky will show through as the BG. Adjust as necessary in the Inspector.
Good luck.
Russ

Please answer once and for all the boot green screen

I have searched everywhere for an answer since my issue.
Relevant info:
iPhone 3GS.
iTunes version 10.7.0.21 (2012-09-12).
Doesn't matter what system I have since this is related to an iPhone device.
Fully charged battery before proceeding with the update.
Updated the iOS 5.1.1 of the iPhone to iOS 6.0 through required update recommendation of iTunes.
Never been abused, jailbroken, serviced or dropped. (never had issues until the update)
Once completed the updated process of iTunes and iPhone was done with the internal installation, the iPhone rebooted with a green screen/hue and the apple logo was still original color "silver". It loaded up to the iPhone Configure screen still with green color screen/hue.
I pressed on the power button for 5 seconds and slide "slide to power off" and the iPhone turned off. I waited about 15 seconds and pressed on the power button to turn the iPhone back on, hoping no more green screen/hue and the apple logo was still original color "silver" but returned to the original green screen/hue and the apple logo was still original color "silver".
Failed!
It still showed green screen/hue and the apple logo was still original color "silver" and booted to the iPhone Configure screen still with green color screen/hue.
Remedies tried after searching the internet:
Hard Restart/Reset.
DFU Mode. (even tried a restore process with iTunes again *so much time wasted to obtain the iOS download again*
Recovery Mode (even tried a restore process with iTunes again *so much time wasted to obtain the iOS download again*
Recovery from Backup is denied because previous version was iOS 5.1.1 and iTunes refuses the process so (even tried a restore process with iTunes again *so much time wasted to obtain the iOS download again*
Left the iPhone at the Configure screen until battery drained and then plugged it back into the USB port of system until it charged long enough for the iPhone to boot yet again green screen/hue and the apple logo was still original color "silver". It booted to the iPhone Configure screen which is still the green screen/hue and I left it charging until battery icon top right showed full.
Now, can someone give a straight answer while staying on this topic about this issue, please?
*I can understand if the apple logo was green then it could be a screen issue but it is not the case.
All help is greatly appreciated even if you took the time to read all of this but did not answer.
Thank you!

halodev:
I made a CF/Flex site based on the Flexstore sample app,
using a database instead of XML as the data source; in case you
want to see it:
http://www.timos.com/dg/flex/DilemmaGames.html
At first I had troubles similar to what you describe;
initially, part of the problem was that my hosting company had not
yet upgraded to CF 7.02. One other thing I had to correct: when you
upload to your server, upload the entire ‘bin’ (or
whatever your output folder is) minus the debug SWF.
If it would help with other issues, contact me and I will be
glad to make my project code available to you. Good luck.
Carlos
[email protected]

Possible solution for white C2D iMacs with screen artifacts or lines

I have a white 20" Core 2 Duo iMac with the famous screen artifacts issues. Screen tearing, horizontal lines, goofy pixels, you name it. From my research it seems there are countless others with these problems.
I tried running the SMC fan control app to boost fan speeds. This helped a little, but did not completely solve the issue. A lot of people think these issues are related to heat, and I agree, but only partially. When a graphics chip overheats it is eventually damaged. I have damaged my share of graphics chips while overclocking them in my PCs. In the case of my iMac and maybe plenty of others, I still have issues if the GPU is hot or cold.
I installed WinXP using bootcamp. I finally found an application which will change the clock speed of the GPU on the fly. The X1600 GPU in my iMac has a 475Mhz core speed and 500Mhz memory speed. I cut these down to 400Mhz on the core and 400Mhz on the memory. At these lower speeds I no longer have any issues with screen tearing, horizontal lines, or random crashing. I do still have a few wierd pixels here and there, but they are not all that noticeable and I can live with them.
Now for the fun part. I wanted to permanently fix these speeds into my GPU so when I boot back to Mac OS X, I don't have any issues, and I no longer have to boost fan speeds or run any additional apps. I spent most of today taking apart my iMac, putting DOS on a spare SATA hard drive, and running an external monitor while booting my iMac with the spare drive hanging out the side. All this so I can run ATIflash, and use it to dump an image of the GPU BIOS ROM file.
Well, I ended up finding out the ATI GPU has no ROM to flash. My best guess is open firmware or something like that passes this data on to the GPU when the system boots.
So, in my case slowing the GPU down significantly reduced my problems while running within windows. I am 100% confident slowing the GPU down will also improve issues within Mac OS X, but I have no way to pull this off.
If Apple reads this, or if anyone has any connections at Apple, can we please get an optional firmware update to reduce the speeds of the X1600 GPU? It won't fix all the iMacs with these issues, but it will fix quite a few, and for those out there who don't have any issues at all with their white C2D iMacs, lowering the GPU speeds will most likely prevent damage from inevitably occurring, keeping them a happy customer.
Now, some of you may not like the idea of a slower GPU, but if I have to pick between a slower GPU and an $800 logic board, I will take the slower GPU any day.

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HDCam to DVCPro HD Green screen---best way to go?

Green screen shoot on HDCam 29.97p. No have HDCam ability. Should I:
-send out for dub to DVCPro HD and then either
-capture by firewire from 1200A Panny deck
or
-from AJA card by HD SDI?
Will either give acceptable results?
Or gonna have to bite the bullet and send tape and a hard drive
somewhere and have HDCam captured to get acceptable
stuff to composite with?
Thanks in advance.
p2

If you dub it to DVCPROHD, that's where the "damage" is done... so won't make any difference capturing thru HD SDI or FireWire quality wise... But stay at 1080... don't go down to 720... as long as that machine of yours plays back 1080... better look into that for sure.
It should still be OK though as far as the green screening ability because it's still in a 4:2:2 colorspace.
That said, If you could capture from the HDCAM via SDI and go to ProRes... you'd be better off in theory.
Jerry
Message was edited by: Jerry Hofmann

Green screen, downlading files and updating programs often stuck at 99%.

Okey so I have got this problem for a 20 days, since I build my own computer. Some videos on youtube and other video stream sites bug out in the way that the video just goes green, and starts fast forwarding. Then I think streams on twitch.tv for example, I cant watch a stream for longer than 20 second and the video gets frozen and the stream needs to be refreshed. And updating games, downloading files often gets stuck at very end of the progress, and it wont succesfully download or update. Im not sure is it about Flash Player/Shockwave Player but if there doesnt come example green screen it may show something like you are missing add-on Flashplayer but when i refresh the page it may run the video fine for some time.
The problem rarely happens at youtube but heres one where it happened Crs Piglet (Vayne) first ever NA Penta - YouTube
Heres video where the video didnt start at all and aswell when it did the screen gone green again and fast forward. (contains adds) http://www.thevideo.me/kmqcwhblzheh
Heres screenshots and one bad quality phone photo album of these problems, green screens, videos stuck, downloading stuck and updating stuck 99-100%. Imgur
Heres my computer specs:
My operating system is:          Microsoft Windows: 8.1 Pro, 64-bit
Processor:                             Intel(R) Core(TM) i5-4690K CPU @ 3.50GHz
Graphic card:                         Nvidia GeForce GTX 760     Driver updated to: Geforce Game Ready Driver 347.52.
Memory (ram):                       8GB
Motherboard:                         MAXIMUS VII RANGER
Dont know what else info I could put on about my computer really... I have tried to find answer, like disabling hardware acceleration, deleting flashplayer memory file, safe modes and all kind of tips I as able to find from internet.
And I use mozilla firefox (36.0), but the problems happens aswell in Internet Explorer. I have updated Flash Player (16,0,0,305), my drivers (Geforce Game Ready Driver 347.52), all windows updates, java(1.8.0?), but still cant find the answer why watching videos/streams work well.
Im sorry if I missed some info but ask if theres something.

The green screen means that hardware decoding has failed. It's probably a subtle, intermittent driver bug.
You can disable hardware acceleration in Flash to avoid this while you wait for updated drivers to become available:
Video playback issues

Green Screen Problems, Please Help!

I'm experiencing problems with the greenscreen effects of iMovie 09. I really need help. What happens is when I drag the clip ontop of the other clip, I click green screen. Then play the clip and see just a few reen dots, not the green screen footage. If you need a link to the footage its http://www.youtube.com/watch?v=EAFMRKsoX5E. Please help, as this is one of the main reasons I bought a Mac.

LukesQueriesOnMacAndiOS wrote:
… see just a few reen dots, not the green screen footage.
the material you're linking to is in a .flv container (and downloading it violates the ToU of YouTube, just to mention that )
after re-wrapping it into a suitable format, works like charme:
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Why do I get a green screen on all of my videos in Mozilla (YouTube, Facebook, etc.)

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Try updating your graphics driver: https://forums.adobe.com/thread/945765

Green Screen Artifacts??

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