Fetch URLs of video archives from given 'interviewId' or if omitted for given 'since' timestamp. If not provided, 'since' will be defaulted to time of first created archive. The maximum fetch size is 1000. In case maximum fetch size is reached, a new fetch should be triggered, using 'startTime' of last record from previous fetch as 'since'. URLs returned are temporary URLs, which expire in 5 days.