The Fresno Police Department's standard issue firearm is the Beretta Storm Px4 Type F (.40 S&W), which is a single/double action pistol with a manual decocker and safety. From the still photo of the officer's POV, you can see what appears to be the ambidextrous slide-mounted safety lever, and slide release on the left side of the pistol frame. At the 1:04 mark of the video, it does appear that the officer is disengaging the safety with his right thumb.
There are still quite a few PD's in North America and around the world that use semi-auto pistols with external manual safeties, such as the Beretta 92FS (LAPD & the US Army), Smith & Wesson Model 5906 (RCMP & NYPD), and the Heckler & Koch USP9 (Metro-Dade PD). That being said, the popularity of pistols like the Glock (and it's newer cousins from S&W, Walther, SIG, etc.) have made pistols without external safeties a favorable option with many departments.