How do I use TikTok's Green Screen effect?

TikTok's Green Screen effect allows you to replace the background of your video with any image or video. Here's how to use it:

1. Open the TikTok app and tap the "+" button at the bottom of the screen to create a new video.
2. Tap the "Effects" button on the right side of the recording screen.
3. Scroll down to the "Green Screen" category and select the effect you want to use.
4. Choose the image or video you want to use as your new background by tapping the "Image" or "Video" button at the bottom of the screen.
5. Record your video by holding down the record button. You can move and resize the foreground image or video by using your fingers.
6. Once you're done recording, you can add filters, text, and other effects to your video before sharing it.

Please note that the exact steps may vary slightly depending on the version of the TikTok app you are using.

Also, it's important to note that the Green Screen effect only works with static images or videos, it doesn't work with live videos.

You can also use green screen effect on existing videos from your camera roll, by selecting the video you want to use, and then apply the green screen effect as described above.