Track priority will be assigned based on calls to preload.
Segment background prefetching is shared if there are multiple players instances (in the rare case there would be
multiple players). Having a global incrementing trackPriority prevents one player from starving another.
Track priority will be assigned based on calls to
preload. Segment background prefetching is shared if there are multiple players instances (in the rare case there would be multiple players). Having a global incrementing trackPriority prevents one player from starving another.