I took a video when I got married, and the other party only gave me a tape. How to convert the video from the tape to the computer?

In this case, neither the photographer you hired nor the people in the shop are professional. Generally speaking, they will say that the things taken in the camera are collected into the computer with the 1394 acquisition card (which is usually the case), and then the video taken is processed with relevant video editing software, which is equivalent to a wedding documentary, and then burned to a CD with a burner for you to see.

You said to give you a tape. It should be from the camera. I don't think you can capture the video inside without a camera that matches the tape. You have to take it to a professional photography shop and ask them to collect the videos for you, but the collected videos are unedited, so you have to deal with them ... or settle accounts with the person who filmed you directly, but you didn't pay him.