Rewind/DVR: Enable playback of earlier segments in a live broadcast by moving backwards along the stream timeline. Users can revisit specific parts of a program within the live buffer duration.
Start-over: Request playback from a past timestamp using start (Unix timestamp in ms).
Example: *.m3u8?start=1758651411000
Catch-up: Request playback between two past timestamps using start and end.
Example: *.m3u8?start=1758651411000&end=1758652011000
nDVR: Record programs upon user request; only one shared file is saved for efficiency.
nPVR: Similar to nDVR, but generates a dedicated file per subscriber.
LLCU (Long-lasting Catch-up): Allows access to content beyond the live buffer by creating and uploading VOD assets to storage. CMS is responsible for retention and deletion.
