Where can I find the video material library

Find the material video. Tools/materials: one plus mobile phone 8, hydrogen OS 10, newspaper clippings 8.9.0.

1, the first thing you need is to open the phone to cut the film. You can see that what you need is to click Select to start creating.

2. What the next process needs is to click to open the material library according to the operation.

3. You can find videos of various materials, and click Add.