Player requests a stream 1 SCTE-35 markers trigger SSAI to call the ad server 2, which calls PBS 3 PBS fans out OpenRTB 4 Cached VAST returns 6 The ad server unwraps VAST, merges other demand 7 SSAI stitches winners into the stream 8 As HTTP origin, forward X-Forwarded-For or bidders see a data center. See audio 33.
FIELD NOTES
- SSAI fraud 1.5x above non-SSAI — verify app-ads.txt
- imp.exp defaults to 55 min — bids go stale before the break plays
- mincpmpersec prices per second, not per impression — unique to pods