Based on Microsoft Advanced Systems Format and compressed with Windows Media compression, WMV file is also known as Windows Media Video. It is popularly used in online video streaming on account of its small storage space. Sometimes, having had downloaded several movie segments saved as .wmv file extension, you might need to edit them, like remove blank segments from it, crop black bars or commercials, merge them into a single one, embed subtitles in your native language, etc. In all cases, you can follow the instructions below, which looks at how to edit WMV files on Windows 10 in 2 ways.