How to use the green screen material needs to be set in the picture-in-picture. 1. Open the cut, click Start Creation, and import the positive. 2. After the import is successful, enter the editing interface and select the picture-in-picture in the toolbar below. 3. Then click Add Picture in Picture in the secondary toolbar below. Select a piece of green screen material and click the OK button in the lower right corner to import. 4. After the import is successful, the positive film and the green screen material are normally superimposed together, and then we process them to make the green screen disappear. 5. Pull back the lower secondary toolbar, find the chroma matting function button, and click Use. 6. Drag the color picker to the green position next to it to set the intensity and shadow. 7. Set the intensity to maximum. Set the shadow to an appropriate value. We can see that the green curtain has disappeared perfectly, leaving only dancing flowers. Click the check mark button to confirm the use. 9. Then we use two fingers to knead in the preview area, enlarge the material to the appropriate size, and then drag it to the appropriate position with one finger. Our video superposition effect will be done. 10. Finally, click the Export button in the upper right corner to export the finished superimposed video. How to make good use of composition materials and how to accumulate composition materials from reading? Mr. Lu Xun said: If you only look at one person's work, the result will be poor! You won't get much benefit. You have to pick many flowers like a bee to make honey. If you bite in one place, your income is very limited. So if you want to write a good article, you have to keep accumulating materials, keep reading, and keep looking for useful writing materials from books or life experiences. In terms of application accumulation, there are many such models at all times and in all countries: when Defoe, a British novelist, was 53 years old, he accidentally saw a story in a magazine. This story is about a sailor who was abandoned to a desert island because of his conflict with the captain and lived alone for four years. Later, he was discovered by a navigator and brought back to England. Defoe thought it was a good theme, so he used this story, combined with his real life observation and personal experience, and wrote a book Robinson Crusoe through new creation. The publication of this novel was immediately warmly welcomed by readers. This story shows that accumulating materials plays an important role in our writing. How can I accumulate composition materials from reading? First, read a lot. The great poet Du Fu once wrote in Wei Zuocheng's Twenty-two Rhymes: Reading is like writing. In other words, only a lot of reading, usually a lot of reading, can increase the reading range and improve the reading level. In the process of reading, you should learn to read different kinds of books instead of reading for the sake of reading, which will narrow your reading range. It can be interesting geographical stories, humorous stories, poems of Tang and Song Dynasties, Chinese and foreign short stories, biographies of celebrities, historical events, different themes of different articles, different writing methods of different themes, different writing methods, different writing methods and different cultural knowledge. Therefore, only by reading a lot can we have rich knowledge and broaden our horizons, but in the process of reading, only by reading well and reading well can we really read widely. Second, as the saying goes, a good memory is not as good as a bad writing. We read a lot, which broadens our horizons, improves our reading interest and broadens our knowledge, but if we don't pay attention to accumulation, we will gradually become an armchair strategist, and writing with a pen can really improve our writing level. So in the process of reading, we learned to extract purposefully. Extract some writing materials that are useful to me and let me use books for my use. Generally speaking, we read more books, but the excerpts are relatively less and more refined. For example, it is necessary to extract well-established famous sayings, composition knowledge, good words and sentences with good rhetoric, valuable case materials and special composition materials. It is necessary to quote ancient poems, proverbs, etc. This knowledge is very useful in our writing process. Third, writing reading notes is a good way to accumulate reading. As an extension of the reading process, reading notes are a summary and a sublimation of the soul. It is the best way for readers and authors to produce * * * sounds. Therefore, reading notes can improve a person's writing level and is a good way to accumulate materials. You can use different methods when writing reading notes. It can be the feeling after reading, that is, through this book, combined with your own reality, express your understanding, gains and feelings in the process of reading, so as to achieve the combination of book and heart. This is the most commonly used expression, and it can also improve the writing level. You can also summarize the contents of the book you read by making an outline. It can also be a simple excerpt. There is no definite method for reading notes, just summarizing and applying them according to your own reality. Polk said: reading without thinking is equivalent to eating without digesting. I said that reading does not pay attention to accumulating materials, which will only make us pay a lot and get less. We should get different honey from different flowers like bees, so as to get enough nutrition. How to cut out the green screen material use: Tool: OPPOa72

1. Open the incision and click Start Creation.

2. Import the prepared green curtain material in the material column.

3. Drag the material to the timeline panel. After selecting the material, you can see that the property panel in the upper right corner has matting options.

4. Finally, choose the intensity-drag the slider to the right-until the green curtain disappears.