Open the file in the original software, Pinnacle Studio , then use the Export or Render function to save the project as an MP4. Recommended SDV to MP4 Conversion Tools
If VLC doesn't work, these specialized converters support a wide range of legacy and unusual formats: Sdv To Mp4 Converter
Some older mobile devices use .sdv as an extension for 3GP video files. These can be converted directly to MP4. Open the file in the original software, Pinnacle
Developed by Pinnacle Systems (now Corel), these files store project settings, transitions, and references to media, but they are not playable video files. these files store project settings