When a user selects a video, he can quickly preview the video by clicking the Play button in the preview screen or clicking the navigation bar below. At the same time, users can also quickly view the video images of corresponding key frames by dragging the thumbnail navigation bar left and right, which is convenient for users to find the required video content.
If you still have more doubts, you can enter vivo official website-My-Online Customer Service-Enter labor and consult online customer service feedback.