How to add image watermark to video?

Step1.Launch Video Watermark Subtitle Creator, you will see the following main interface.
Click Add ,you can import one or more video clips into list.

Step 2:add image watermark  to video.
Click Watermark ,and then Click Add Picture .

Step 4:preview at design time, so the video’s watermark and subtitle effects can be previewed at any time without conversion.
Click play(preview) ,and than click close button.

Step 5:Ok, Click Run to start watermarking process.