<button bindtap="action">test</button>

Page({
  action() {
    tt.chooseVideo({
      sourceType: ["camera"],
      success: (res) => {
        this.saveToAlbum(res.tempFilePath);
      },
    });
  },
  saveToAlbum(filePath) {
    tt.saveVideoToPhotosAlbum({
      filePath,
      success: () => {
        tt.showToast({
          title: `saveVideoToPhotosAlbum 调用成功`,
        });
      },
      fail: () => {
        tt.showToast({
          title: `saveVideoToPhotosAlbum 调用失败`,
        });
      },
    });
  },
});