What you are watching is live action from the ballot counting center for the August 28, 2018 Arizona Primary Election.
Current Arizona Revised Statute requires:
16-621. Proceedings at the counting center
C. For any statewide, county or legislative election, the county recorder or officer in charge of elections shall provide for a live video recording of the custody of all ballots while the ballots are present in a tabulation room in the counting center. The live video recording shall include date and time indicators and shall be linked to the secretary of state's website. The secretary of state shall post links to the video coverage for viewing by the public. The county recorder or officer in charge of elections shall record the video coverage of the ballots at the counting center and shall retain those recordings as a public record for at least as long as the challenge period for the general election. If the live video feed is disrupted or disabled, the recorder or officer in charge of elections is not liable for the disruption but shall attempt to reinstate video coverage as soon as is practicable. Any disruption in video coverage shall not affect or prevent the continued tabulation of ballots. This subsection is contingent on legislative appropriation.