Layer 1
Layer 1 has all the main editing between your sources. You will see the clips end to
end and sometimes the edit points are cuts and sometimes you can see dissolves.
This layer was created from your main input switching. All the edits with the video
inputs and the still frame source will be placed on layer 1.
Layer 2
Layer 2 is for the downstream keyer. In the ATEM switcher, the downstream keyer is
located after the transition block. In editing this means it's on layer 2 so it can override
the main switching that's been placed on layer 1. If you place a graphic with an alpha
channel in the downstream keyer and put it on air, it will have added this title to the
video output. Now this layer is on layer 2 and it overlays the same graphic with alpha
channel over layer 1.
Layer 3
Layer 3 is for fade to black. Fade to black is the last processing in the switcher and
it fades all layers in the switcher to black. This is commonly used at the end of the
program, or to lead into commercial breaks. Fade to black is on layer 3 because it will
override all the layers below it, just like it does in the switcher. Fade to black is a black
video generator with a dissolve applied to the front and end.
Shifting Edit Points
An advantage of editing is you can shift your edit points around. When you do a live production,
the action can get very fast and it can be difficult to keep up. Imagine an interview program
where multiple people are rapidly talking and interrupting each other. The live switch may have
struggled to keep up as the conversation moves from person to person.
So rolling the edit points will allow you to move the edits to before a person starts talking. In a
live switch you need to keep up so your edits lag behind the person starting to talk. However
now you can shift them back in time and the edit will cut to the person just before they start
talking. This will transform the feel of the program.
To roll the edit forward, scroll to the edit point in the timeline and then move your mouse to the
edit point in the lower timeline. You will see a double bar tool appear. If you click and drag to
the left, the edit point will move to earlier in time. If you click and drag to the right, your edit
point will move later in time.
Be sure not to click the half bar tools with the little arrows. These are the trim in and trim out
tools. As you move the mouse around the edit point the tools automatically change. So if you
use the trim in and trim out tools, you will increase or reduce the duration of your whole video
track and the audio will become out of sync with the green audio track below.
Replacing Shots
The sync bin will let you find shots that sync to the point on the timeline where you are currently
positioned. This means you can fix situations where you cut to the wrong camera, or you can
search for better shots because you have more time to see what alternatives you had.
To use the sync bin, just select it from the top left of the cut page. Once selected, you will see
your media pool at the top left and your viewer will change. The media pool will now show a
timeline of available clips and the viewer will show a multi view of the shots you have. These are
only the shots that sync to the point in the timeline you are positioned on. If you move the
timeline, these shots will also track in sync.
Think of the sync bin as an assistant editor that looks for shots for you and displays them in a
multiview, so you can use them for editing.
ATEM Software Control
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