In the basement of the old municipal building, Elias found a drive labeled with a single, handwritten string: fhdarchivejuq943. It wasn't a standard catalog number. It was a ghost in the machine.
If this is a high-definition (FHD) video archive you are trying to convert to MP4: fhdarchivejuq943 2mp4 install
Several tools are available for converting and archiving videos, including: In the basement of the old municipal building,
ffmpeg -i fhdarchivejuq943.mp4 -c copy -movflags +faststart output.mp4