A: Yes, if you own the video content (e.g., home videos). If the SDV file contains copyrighted TV broadcasts, converting for personal archival use is generally considered fair use, but redistribution is illegal.
The SDV file might actually be a proprietary "project file" from an old editing software (like Studio DV) rather than an actual video file. If it is a project file, it only contains editing instructions and timelines, not real video data. You would need the original software to open it and "Export" it as a video.
Click and wait for the cloud servers to process the video. Download the finished MP4 file to your local drive.
The incredibly versatile VLC Media Player is known for playing almost anything, and on occasion, it can open certain SDV files. While not guaranteed, it is often the quickest first step to test.
