Convert RSV to MP4

It is, per se, not possible to convert Sony RSV Recovery Files to MPEG-4 Videos (.rsv to .mp4 conversion). Such conversion is, most likely, searched by users of Sony camcorder devices having issues with their recordings that were unexpectedly stopped (due to empty batteries etc.), and are attempting to recover those video files.

Such Sony devices should essentially come with a recovery option, which transforms the recording into an MP4 file. That, however, doesn't seem always work.

There are several YouTube videos discussing this issue offering various solutions, but none of them is 100% reliable.