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

Similar Messages

Best settings for Green Screen Video with Canon Mark iii

HI
What are the ideal camera settings for Green screen video.
Iso?
aperature?
Depth of field settings (best to have the green screen a bit out of focus?)
Any other camera settings would be helpful.
Thanks
Rowby

Hi Rowby!
Thanks so much for writing in about green screen shooting with the EOS 5D Mark III camera. Green screen shooting can come down to some crucial elements and how well you handle the camera and the lighting.
Arguably the most important thing is to have excellent lighting on the screen. Without this, the keys used to replace the green screen will not be accurate. So hopefully you have a good set of lights you will be using to actually light the physical screen.
With regards to ISO, shoot as low as possible. We suggest that you stick in the ISO 200-400 range where possible. With good, high key, proper lighting on the screen this shouldn't be an issue.
Aperture should actually be in the higher end of the range, you would want to stick to apertures around f/8 and above. Again, with adequate lighting this shouldn't be out of reach. This is so the green screen is more in focus, versus having it out of focus, which would not yield successful results.
Use an appropriate lens to the subject, for example if you are doing wide shots- use only the focal length needed for the shoot and no wider. For head shots, close ups- use a lens that will get you close.
Following these suggestions should give you some pretty good results. Remember, if this is your first attempt don't be discouraged, green screen shooting can be difficult to accomplish.
We wish you the best of luck in your endeavor!
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Green Screen issue with an flv file

I am attempting to create a Green Screen were I walk out onto my website and speak to the viewer. Everything looks good and plays within Premiere but after exporting and placing it on my webpage a black background shows instead of the background being transparent. can someone help with what I am doing wrong?

> and are flv files the only ones that I would run into this with?
There are other kinds of files that can include alpha channels (transparency). Just so that you know what to look for, QuickTime and some other formats require you to specify the inclusion of an alpha channel from a color depth or channels menu. In some cases, a plus sign (as in Millions Of Colors+) denotes an alpha channel. Similarly, choosing to output to 32 bits per pixel implies an output depth of 8 bits per channel for each of four channels: RGBA (where A is for alpha).
But, yes, FLV with video encoded with the On2 VP6 codec is the main format for web video that supports alpha channels.

Is my flash player broken? Skipping green screen glitch with sounds.

Is my flash player broken?
I'm getting a glitch with almost every video hosting like Youtube, Vimeo, vk.com etc. It's a glitch with green screen and the video starts skipping video in big parts, also making scary sounds, sometimes it starts doing it when the video is playing byitself,
sometimes when i skip on a particluar part. It happens to almost every video. I'm not sure what the issue is, I get it in Mozilla and Chrome. I reinstalled flash player 5 times, cleared cache, deleted browsing hystory, tried everything.
Please help. Here's the video of my issue:
http://www.youtube.com/watch?v=jVJm5ArYOh4

I did that, and worked. I was reading another thread and saw this (disabling hardware acceleration should work), then I restarted, and tried using HA and again green screen and crashing. Now I'm using without HA and so far, so good. I sent a report to AMD, because I'm using latest drivers for Radeons and obviously there is an incompatibility.

Green screen videos with sound.

Videos are showing only a green screen with the sound. I need to be able to see the videos. This happens on training videos and in FB. I was able to see them at first now I can see the videos, I can only here the sound.

Hi,
Please use the following instructions to fix:
http://social.technet.microsoft.com/wiki/contents/articles/20807.how-to-fix-green-screen-video-playb...
Good luck.
BH
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Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

Green Screen issue with reflections (Primatte Keyer)

Hi together, as I noticed lately I unfortunally got some reflection issues at this singing bowl in the back. I'm looking forward to chroma key it using primatte keyer.
It looks like I got a serious problem there and I'm looking out for a little help.
Would be so nice to get a clue or two to keep on working on a solution. My problem is - the girl is moving a bit later - so a simple mask would'nt work. I think it would be the best to key the full singing bowl and replace it with an image later.
I also have footage of the setup without the girl sitting in focus.
If I remember right, there was an different keying technice were I can "erase" the full background and when the girl is mooving to the focus everything else is keyed with exeption of her. But I can't remember the correct terms or keywords to look out for solutions online.
Thanks in advance - hope I will find a solution :-/ .. maybe on or another of you guys is able to share a clue with me.
SubUrb

After carefully looking at your shot I would mask the bowl first, put it on top of the original footage, use color suppression on the bowl to remove the green, then nest that comp in another comp, pull the key using the nested (pre-comp), then put the original footage above the keyed comp then use rotobrush to mask just the part of the girl that passes in front of the bowl. The project would look something like this:
I used Keylight's Foreground Color Correction to supress the green on the masked bowl layer. If the camera is moving you can track and stabilize the shot, use a track matte, then re-introduce the motion to the track matte and remove the stabilization to keep things lined up.
Pardon my funky orange solid background replacement, but I think this is the way to do the shot with the least trouble.

GREEN SCREEN WITH VIDEOS ON IE AND MOZILLA

I have a Desktop HP with Windows 7 Ultimate, SP1, 64 bits with an ATI Radeon 4500, catalyst 13.1.
Java (8.0.250) and Flash Player (15.0.0.189) with automatic update option.
Videos on IE11 and Firefox 30.0 give me an green screen image with sound.
I have reinstalled the all thing, partially, fully, and no result at all!
There is no option for disabling hardware acceleration, and I think it would be, if possible, a poor solution.
Yes, I have executed the very celebrated solution uninstalling the 2 windows updates (KB2735855 and KB2750841) and the blindness remains.
Hope the industry publicize a fix for this very soon; it is a disturbing problem at several levels and, once again, I am considering seriously passing all my professional profile for a Linux environment.

I don't know how old the videos or the converter is, however a few years ago and that maybe generous both Microsoft and Apple had an mp4 format and they were not compatible with each other. Eventually Apply won because of the h.264 codec. It was better quality and compressed better.
If it plays in other programs, then the codec has to be there in one form or another. It could be that quicktime uses it internal codecs and photoshop is looking for those installed on your computer. (guessing)
There use to be a small program that would read a video file and tell you what the codec is. I don't recall the name at the moment but a quick search on download.com by cnet should provide a link if it is still available and for your current computer. (whether it has been updated or not)
On the same site, you can search for codecs. Be wary installing them, not all are up to par. There are some people who have other intentions for the codecs than what they were written for. Some require that the codecs be used for personal use only unless you pay them a fee which could be a high amount in some cases.
Use google and bing to search the author to see if there are any complaints.
However if you are able to convert them to another format, then go ahead as long as it works and you don't have to deal with con-artists and high fees.
That said, it doesn't happen all the time, but it does happen I have read complaints about it.

GREEN SCREEN WITH FCE

Hi guys! I don't have the Final Cut Express yet, I work with iMovie, but I need to do some videos of a talking head and change the background. Is that possible with FCE? Can I shoot green screen effects with this program?

Hello and welcome to the forum.
Can I shoot green screen effects with this program?
Indeed you can.
Understand that FCE has a significant learning curve. You'd be wise to invest in some instructional material. Two excellent choices:
Final Cut Express Editing Workshop by Tom Wolsky (frequent contributor to this forum)
Apple Pro Training Series-Final Cut Express by Diana Weynand
Each is $25-30 on Amazon.

How to use Green Screen option?

Sorry this is such a general question, but I have very limited internet access here at work (can't even access Google) and I would like to figure this out before I leave for the day so I can grab what I need on the way home.
We are making weekly comical "newscast" type videos, and we have been using PhotoBooth to make it look like we are in a news room.
I would like to stop using PhotoBooth (due to the obvious extreme limitations in video/audio quality) and use the green screen option in iMovie 09.
Would anybody be so kind as to give a brief couple of paragraphs on the best way to accomplish this?
I have seen the option pop up when inserting a clip on top of another, but which one is the footage/image to replace the green area... the original clip or the overlayed clip?
And is there a specific shade/type of green that works best? Or can I just pick up a dozen yards of general "crayola" green fabric to cover a wall?

I have tried but haven't had much luck. Although I am having a problem with Snow Leopard and iMovie right now. That may be affecting my success. Here are the instructions out of iMovie help.
To use green-screen effects to superimpose video:
Record video in front of a solid green backdrop, and then import it into iMovie.
When you record, for best results do the following:
Use a pure (highly saturated) color of green for the backdrop.
The best color of green to use is often called “chroma key green” in paint and cloth.
Make sure the subject doesn’t have any green clothing, and don’t include anything green in the shot, other than the backdrop.
If possible, use multiple lighting sources to eliminate shadows on the subject being recorded.
Include a moment at the end of the recording with the subject out of the frame. This indicates to iMovie what should be left out when the video is superimposed.
Choose iMovie > Preferences, click General, and then make sure Show Advanced Tools is selected.
In the Event Browser, select video that you recorded in front of the green backdrop.
Drag the selection directly over a clip in your project (video, solid color, or animated background clip), and release the mouse button when the cursor displays a green plus sign .
Choose Green Screen from the list of options that appears.
The green-screen clip appears with a green border around it above the video clip in your project. You can drag it to a different spot to reposition it, or drag the ends to lengthen or shorten it.
To more effectively mask areas of the green-screen clip, select the clip in your project, in the viewer click Cropped, and then drag the handles at the top of the viewer to more tightly enclose the subject of the video.
Anything outside the highlighted area in the green-screen clip is removed from the picture. Be sure not to crop out areas that the subject moves into at any point during the green-screen clip.
To produce a better-quality effect, double-click the green-screen clip in your project to open the inspector, then select “Subtract last frame.” iMovie uses information in the last frame to determine what to subtract from the finished clip.
Selecting “Subtract last frame” works only if you included a moment at the end of the green-screen footage with the subject completely out of the frame.
To watch the clip, click the Play Clip button in the viewer.

Refining Green Screen Workflow

Hail! Working on a local tech show and would like some assistance in fine tuning a workflow for faster and better post production. So far here’s the process:
Green Screen shoot with 7D
Edit 7D MOV files without converting
Trimmed clips are individually DLinked to AE for keying and compositing as needed
Render MPEG2(50mbps) from AE and set as proxy(so that I have a smoother playback with the AE files on the timeline)
Fine tune and export for delivery.
Currently only able to work from 1 media drive and 3 USB 3.0 external drives.
The experience hasn't been fun having only 3 days to work on each 26-28 min
Any and every suggestion/methods welcomed.

Do you need to see what's in the green to edit? Might be easier to edit the native media, then open the whole edited project in AE for keying and other effects, and then final export.

Green Screen Returns

I have a green screen flv with alpha playing in the first
frame of my project. If no links are used the video returns after
about a minute with no audio and revealing the green screen. What
action script can I use to tell the clip to stop or make it
invisible. The problem can be previewed at
http://www.americanentrepreneurlive.com
Thanks for any help.

Hey fumanchu,
Did a small google search and found the following:
http://www.likelyanswer.com/28020629/My-Macbook-Pro-Had-A-Flashing-Red,-Blue,-Gr een-Screen-At-Startup
which lead me to:
https://discussions.apple.com/message/21535976#24471966
which lead me to:
http://support.apple.com/kb/PH4405
Basically reset the PRAM.
Worked for me hope it works for you buddy. I did it due what the first link said "might be user abuse to the display". doesn't sound good.
Cheers
j3rg

Strange problem when editing green screen clips

Hi all,
I work as a technician in a High School.
Recently I was doing some green screen work with a class, we were using 10 macbooks to edit. Out of the 10, 6 had this same problem;
At some point after inserting the green screen clips and the background, the project part of the iMovie window stops displaying anything, iMovie acts like the clips are still there though (If I move the cursor over the now empty space, I still see a preview in the preview window). But nothing is visible and nothing can be moved or changed.
Closing iMovie and reopening doesn't work, restarting the macbook doesn't work. The problem seems to be saved to the project file, if I open a new project, the new project is fine, but if I re-open the broken one, it's still broken. The only thing we could do was completely restart and delete the project file.
I hope this makes sense, due to this problem half of the class couldn't finish their work. The same problem has also occurred to another student who was working with green screen in iMovie 09 on an iMac.

Hi Ted,
I've seen this issue before. One thing to remember is that iMovie has a live rendering feature, so sometimes during playback, the viewer does not always display correctly.
I don't know if you tried taking the green screen clip out, then re-adding it.
Also, trying to simply delete the preference file can fix the problem. Home folder>library>pref>imovie.plist
delete that and see if the problem persists.
Doing this will not effect any projects students have made in iMovie.

Unable to green screen help please

hi.
i'm trying to use the green screen feature with little success.
i have created a red bouncing ball on green background.mov animation to overlay over a background.
all goes well until it come to the actual overlayering and i'm left with a lightened ball and darkened background instead of a removed green background and a red ball.
any hints as to where i'm going wrong?

Green screen works when you film a video using a camcorder in front of a green background. After importing this video into iMovie, you can drag and drop it on another video or photo and the green background will disappear. I don't think it works as you are using it.

Precision editing green screen

So I tried using the green screen function with iMovie09. I first put the background clip into the project, then dragged the foreground on top of it, and then selected green screen in the pop up menu. Both clips were 5.0s.
I found it impossible to coordinate the clips so that both appear at the same time when the movie is played back. Also, sometimes the transition from the previous clip would not work at all, and sometimes it would but the two 'green screen' clips would start at different times.
I had a One-to-One session at my local Apple store yesterday, and the guy in the store and I spent 40 minutes trying to get it right, trying to tweak the clips in normal view and the precision editor. We also played with the transition times and tried deleting it all and re-importing the clips and transitions to the project. Never could get it synchronized...
Anyone else had this kind of problem? Anyone found a way to sync up the two clips with green screen?
Tks

what is your "background/foreground" source - both are imported clips from my Canon HD camcorder (digital tape)
have you tried to adjust the thumbnails view in your project? - yes. In the Apple store, the guy tried changing the thumbnails to 10 secs and then 30 secs. In precision editor we tried adjusting also.
Regarding the transitions not being visible, if you are positioning the green screen layer on top of them, that's expected. - yes, it seemed that we were occassionally over/underlapping one of the clips with the transition, which caused the transition not to work. But even when we had this fixed and the transition worked, the background and foreground clips would appear at (very) slightly different time.
drag the beginning of the green screen layer at the very beginning of the background layer. - yup, seems like that would do the trick, but as above, there was a split second difference between the beginning of the clips. The foreground was my daughter's face, and the best we could do was get her to appear about 1/4 second after the background. We thought the transition would 'override' the start of both clips so they would appear simultaneously (and hence tried increasing the transition time), but it wouldn't work.
As per the other thread, it would also pause/hang up for a few seconds on every adjustment which is rather infuriating on top of this problem.

Green screen video work flow. Premiere or AE?

Hi all. I have a TON of green screen footage that i need to slice together in quick cuts between one clip to the next. but I want to animate the transitions, have one green screen shot fly in from the back, and the next fly in from the top, etc.
I haven't managed to figure out the best work flow for this - should I clip the footage in Premiere first, then export every single clip to AE? Or does AE have some trimming abilities?
Thanks in advance for your help

+just a green screen?+
With that one, first try the "Disable Direct3D acceleration in QuickTime" section of the following document:
Troubleshooting iTunes for Windows XP and 2000 video playback performance issues

Is green screen possible with Mini DV?

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