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Chromakey
Greetings,
I am looking for some opinions…I am shooting a Interview style show where the background is green screen. The talent is sitting at a News anchor style desk and has a co host and often a 3rd guest. I have two cameras (Canon XL1)…center and left. I am using a Blackmagic ATEM switcher going into a Blackmagic intensity pro capture card. Audio is captured on a Tascam multi-track field recorder. In Post…(Premiere Pro) I join audio and video and then use Ultra key to key out the green screen. This is where things get sticky…In order to keep the show visually appealing, we cut between wide angle center shots and tight single person bust shots. Through the 30min show we go back and forth between these type of shots depending on who is speaking. In post, it is a royal pain and time hog to adjust the inserted background to fit the perspective of the shot. So, we go from a wide shot to a tight single person shot and I have to go in at each transition and readjust the background…not to mention the one time we pulled out while transitioning! The talent in the video began moving and the background was stationary. How can I take all the pain out of changing the background to fit the perspective of the shot? Please help!Thanks
Allan -
1 Reply
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You probably have a lot of clips that are of the same shot. Pick a particular shot, key it, save that key setting as a preset and drop that preset onto all similar shots. The same with the background for those shots. Get one clip looking how you like, save that Motion Preset, and then drop it on the subsequent similar shot’s background clips.
Now, the problem caused by the talent’s movement. Probably not going to be as easy, but still maybe somewhat ‘duplicatable’. You’re still going to have to apply motion keyframes to the background to match the talent’s movement perspective. However, you may begin to notice some similarities between clips, and can copy those keyframes to the other similar clips. If clips seem to have no similarity to previously keyframes clips, then you’ll probably need to keyframe the backgrounds of those on their own.
Going forward, you may find it easier to create a sequence from each tape clip, and do your keying and motion there, then use those sequences to cut subclips from to build your main timeline. The problem being that you will be spending time working on shots that will not be used in the final timeline, but the flow sometimes is easier.
Steve Brame
creative illusions Productions
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