Why can't you drag videos on ulead video studio 11. It says File format is mismatch?

The "File format is mismatch" error in Ulead Video Studio 11 typically occurs because the video file you are trying to drag is in a format that the software does not support. Ulead Video Studio 11 has specific compatible formats, such as AVI, MPEG, and WMV, among others. To resolve this, you can convert your video to a supported format using a video converter tool before importing it into the software. Additionally, ensure that your Ulead Video Studio is updated, as newer updates may improve format compatibility.