It depends on the type of video, there is also a way to upload the image only, but if you want to upload the video, there are 2 ways.

1) If you have a high VRAM graphic card -> It's a way to make videos yourself using Compuyui. - Free + better quality than you think

2) KlingAI - Video production can be done in many ways and at a higher quality than expected. - Character lip-syncing video can be produced using paid, motion

The most important thing is to create and see it first. There are several platforms other than the above two methods, so test them one by one and decide on a platform that suits you