Fixes the chapter timestamp bug not tracking the player position when creating chapters

dashboard

Fix chapter timestamp not updating

Corrected aggregation so video recording start times are computed per requested video, preventing incorrect cross-video mixing and unnecessary database look ups which added extra load on our API and database.

api.staylive.tv

Fix performance issue with wallclock_times left join on video feed route

Enhanced DVR playback handling for livestreams, including optimized program start time calculations when DVR windows are configured to make sure we minimize the risk of users getting huge manifests to download.

Changelog.

Functionality in API for trimmed sliding window with DVR