这展示了如何使用http请求上传视频。
java中也有代码片段（kotlin非常类似）。
要查看如何上传视频，请转至https://developers.google.com/youtube/v3/code_samples/code_snippets，选择 Videos 低于 Resource 以及 insert 在方法下。
如果你点击 Show code 并选择 JAVA 在顶部，您将看到以下示例代码：

/**
 * Sample Java code for youtube.videos.insert
 * See instructions for running these code samples locally:
 * https://developers.google.com/explorer-help/guides/code_samples#java
 */

import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.googleapis.json.GoogleJsonResponseException;
import com.google.api.client.http.InputStreamContent;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;

import com.google.api.services.youtube.YouTube;
import com.google.api.services.youtube.model.Video;
import com.google.api.services.youtube.model.VideoSnippet;
import com.google.api.services.youtube.model.VideoStatus;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.security.GeneralSecurityException;
import java.util.Arrays;
import java.util.Collection;

public class ApiExample {
    // You need to set this value for your code to compile.
    // For example: ... DEVELOPER_KEY = "YOUR ACTUAL KEY";
    private static final String DEVELOPER_KEY = "YOUR_API_KEY";

    private static final String APPLICATION_NAME = "API code samples";
    private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();

    /**
     * Build and return an authorized API client service.
     *
     * @return an authorized API client service
     * @throws GeneralSecurityException, IOException
     */
    public static YouTube getService() throws GeneralSecurityException, IOException {
        final NetHttpTransport httpTransport = GoogleNetHttpTransport.newTrustedTransport();
        return new YouTube.Builder(httpTransport, JSON_FACTORY, null)
            .setApplicationName(APPLICATION_NAME)
            .build();
    }

    /**
     * Call function to create API service object. Define and
     * execute API request. Print API response.
     *
     * @throws GeneralSecurityException, IOException, GoogleJsonResponseException
     */
    public static void main(String[] args)
        throws GeneralSecurityException, IOException, GoogleJsonResponseException {
        YouTube youtubeService = getService();

        // Define the Video object, which will be uploaded as the request body.
        Video video = new Video();

        // Add the snippet object property to the Video object.
        VideoSnippet snippet = new VideoSnippet();
        snippet.setCategoryId("22");
        snippet.setDescription("Description of uploaded video.");
        snippet.setTitle("Test video upload.");
        video.setSnippet(snippet);

        // Add the status object property to the Video object.
        VideoStatus status = new VideoStatus();
        status.setPrivacyStatus("private");
        video.setStatus(status);

        // TODO: For this request to work, you must replace "YOUR_FILE"
        //       with a pointer to the actual file you are uploading.
        //       The maximum file size for this operation is 137438953472.
        File mediaFile = new File("YOUR_FILE");
        InputStreamContent mediaContent =
            new InputStreamContent("application/octet-stream",
                new BufferedInputStream(new FileInputStream(mediaFile)));
        mediaContent.setLength(mediaFile.length());

        // Define and execute the API request
        YouTube.Videos.Insert request = youtubeService.videos()
            .insert("snippet,status", video, mediaContent);
        Video response = request.setKey(DEVELOPER_KEY).execute();
        System.out.println(response);
    }
}

您还可以查看另一个将视频上传到github上youtube的java代码示例。
请注意，您需要对此进行一些更改：
在安卓系统下，你没有 main . 您将需要（1）将代码放在任何需要的地方，并且您可能希望（2）异步执行。
在使用kotlin时，还需要（3）相应地修改语法。