Earlier quoted context omitted.
No, that is video evidence of a police officer admitting to one count of willfully concealing a video recording during an investigation with the intent to prevent its content from being discovered which, if I am reading California Penal Code 135 PC - Destroying or Concealing Evidence [1] correctly, qualifies as a misdemeanor punishable by 6 months in jail. [1] https://www.shouselaw.com/ca/defense/penal-code/135/
Not sure I agree with you, reading the opening lines of the code, "that you know to be relevant to a trial, police investigation or other legal proceedings." No trail or police investigation happening means interfering with the video isnt illegal.
If not being published on YouTube were the criteria for concealment, then wouldn't the person making the recording also be guilty if they simply decided not to post/share it?
Preventing publishing or distribution isn't concealment.