Camcorder

The camcorder is a handheld VCR used to play back the various videocassette tapes related to the main storyline. It appears to be an early-2000s model judging by the form factor and the red "HD" tag on the case. It likely belonged to a Sahara employee, possibly Dr. Cross or Karl Peterson (the owner of the keycard).

Location
It can be found at the mass grave inside Cave 6 - Lawyer Cave, alongside the keycard. It was originally not in the PS4 version but was added in a later update.

Tapes
As of v0.65b, there are 6 tapes that can be found throughout the caves. They are short clips with audio, and appear to be in extremely low quality monochrome for stylistic reasons (their real counterparts were capable of storing much more video at higher quality). They also appear to be worn/damaged, either from repeated playback or rough handling by the cannibals.

All video tapes can be viewed in this video: