Chroma Key Compositing or Chroma Keying, is a visual effects/post-production technique for compositing two images or video streams together based on colour hues.
Why we use it?
We use Chroma Key in order to enhance the experience of a moving/still image, this is also a cheaper alternative than for films to be filmed on location and cuts out any other factors that might hinder the filming process of a film project.
Positives
- Cheap
- Can allow people to theoretically be in any location or environment
- Can save film/TV makers a lot of time
- The shoot wouldn't be delayed by factors such as weather
- The controlled environment provided by a green screen studio ensures that external noise, lighting conditions etc. do not have to be factored into the filming process
Negatives
- A line can be formed around an object while using the Chroma Key.
- That sometimes the image doesn't look real enough to make the location and event believable
- That it can take time and money to train actors and crew on how to use a Chroma Key.
How might we use it?
We would use it in situations where the narrative that we have chosen is in a location that might be fictitious or in a location that would be hard to get to, to film at or that we didn't have the budget or the time to travel to the specific location that we needed to go to.
Our Green Screen Attempt:
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