This video will introduce all operations related to keying, focusing on the OSD's keyer, chroma, and PIP pages.

0:00 Opening
0:23 The concept of layers
0:41 Keyer Page
1:56 Chroma Page
3:04 PIP Page
3:40 Hardware Operation

Transcript

Welcome to Datavideo Academy. This video will introduce all operations related to keying, focusing on the OSD's keyer, chroma, and PIP pages.
Using the concept of layers, the SE-2600 has four key layers, two Downstream key layers, and two logo layers. The key layers support three keying methods: chroma, luma, and linear. All settings are located in the Keyer and Chroma pages of the OSD.
First, let's look at the Keyer page in the OSD. Select the layer you want to adjust; note that the Flex Key 1 and 2 options are not included in the four keying layers and will be explained in a separate Flex Source tutorial video.
Next, choose the keying method: chroma, luma, or linear keying. The “Full” option applies no keying. Note that DSK 1 and 2 do not support chroma keying.
Then, select the source mode. The “Self” option uses the original image for keying. The “Split” option is suitable for linear keying, where the parts to be retained are filled with another fill signal, which can be selected from the Fill Source options. The PIP option displays the keying layer in a PIP format.
Lift, Gain, and Invert are adjustment options for luma keying. Lift and Gain fine-tune the sensitivity of luma keying. Invert off removes black areas, while Invert on removes white areas.
The Key Source option specifies which input signal to use as the keying layer, and the Fill option is for the fill signal previously mentioned.
The Mask option allows you to crop the keying layer, usually to remove unavoidable objects in the frame.
For chroma keying, go to the Chroma page in the OSD. The Keyer and Key Source functions are the same as in the Keyer page.
In the Chroma Setup, it's recommended to start with Auto Keying and then fine-tune other settings to achieve the best chroma key effect.
The Mask values here are linked with the Mask options in the Keyer page.
The Key Tie has two options: the first is to enable or disable function, the second specifies the signal used as the background when Key Tie is enabled. 
When Key Tie is disabled, the key source signal is treated as a separate and independent signal that can be switched individually. 
When enabled, the key source signal is no longer independent but tied to the background signal. When switching scenes, the key source signal and the selected background signal are switched together.
On the Control Unit panel, when Key Tie is enabled, the Key Program and Key Preview buttons cannot be used, and the Program/Preview row buttons will flash when the source signal or the background channel is selected.
Now, let's look at the PIP settings. First, select the target layer. Flex PIP 1-4 are part of the Flex Source components and can also be configured here. The target layer selected here must also be chosen as a PIP layer in the Keyer page for it to display as a PIP.
Position and Crop can adjust the PIP's position, scaling, and cropping.
The Border option allows you to choose the PIP's border style, with different styles extending different adjustment options.
Finally, let's cover the control panel operations.
KEY PGM and DSK PGM buttons let the corresponding layer appear on PGM through a hard cut. 
KEY PVW and DSK PVW let the layer appear on PVW, and it will require a transition to apply it to PGM. 
The KEY SET button is a shortcut for the OSD, displaying the Keyer page directly. 
The Logo 1 and 2 buttons let the logo layers appear simultaneously on PGM and PVW through a hard cut.
That concludes the explanation of the SE-2600 keying layer operations.