d8d3bd7b3f
Before this change, HlsMediaSource timelines had a period starting at the epoch. For VOD streams the window position in the period was the program date time. This change makes period and initial window positions match. For live streams the window position advances as segments are removed, so its position in the period is the difference between the initial program date time and the program date time of the latest playlist. This also makes it possible to insert ads in VOD HLS content with program date time, as the period and window are now aligned. Issue: #3865 ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=187590948