Hi Kinsey,

Thank you for posting to our Forum. Please note that this is the English Forum; for Chinese communication, please visit our Chinese Forum:

If you are looking for information on how to do a green<->keyed transition similar to the beginning of this video: https://www.youtube.com/watch?v=TLCnYG9ZQFA
Then you can find detailed instructions on how to achieve that here: https://my.aximmetry.com/post/3758-half-green-background-half-composite-res

Warmest regards,