the workflow for our local production system encoded the flv video in multiple video qualities from 240p up to 720p (if you ingest HD videos). The video quality should be selectable in the engage UI. The different qualities are marked with the tags "low-quality", "medium-quality", "high-quality" and "hd-quality" in the UI.
4 different qualities (low, medium, high, hd)
cleans the URL (no double/triple/... parameters)
"remembers" the current play time
and surely more