Trickplay control using finite state automata
Methods, systems, and computer readable media can be operable to facilitate regulation of trickplay control during playback of streaming multimedia. Trickplay control can be regulated by associating a segment of a multimedia stream with a finite state automaton, associating a state of the finite state automaton with a flag, and controlling transitions from state to state within the finite state automaton by client interactions with the multimedia stream or predetermined time period.
1. A system, comprising:
an interface operable to receive a segment of a multimedia stream, the segment comprising one or more packets identifying the segment as an advertisement segment and one or more packets identifying a finite state machine controlling the availability of trickplay functions during playback of the segment, wherein the multimedia stream is output from a playlist stored at an upstream server using an adaptive bitrate streaming protocol, and the finite state machine comprises:
a plurality of states associated with one or more flags that control the availability of one or more user requested trickplay functions to be performed on the segment of the multimedia stream; and
one or more state transitions controlled by the number of times one or more boundaries associated with the received segment of the multimedia stream are crossed;
a data store operable to store the number of times one or more boundaries associated with the received segment of the multimedia stream have been crossed;
a processor operable to execute said computer program instructions, the computer program instructions being operable to cause the processor to:
upon reception of the segment, recognize the finite state machine associated with the received segment of the multimedia stream;
identify a current state of the finite state machine associated with the received segment of the multimedia stream based on the number of times one or more boundaries associated with the received segment of the multimedia stream have been crossed;
set the flag associated with the current state of the finite state machine, wherein the flag enables or disables one or more trickplay functions during playback of the segment; and
transition from the current state of the finite state machine to a next state in response to the one or more boundaries associated with the received segment of the multimedia stream being crossed a predetermined number of times, the predetermined number being based upon a status of a subscriber receiving the multimedia stream.
2. The system of claim 1 , wherein the one or more flags control available trickplay behavior of a specific segment of the multimedia stream.
3. The system of claim 1 , wherein the one or more flags restrict user ability to fast-forward through or skip a specific segment of the multimedia stream.
4. The system of claim 1 , wherein the one or more flags restrict user ability to minimize the viewing window of a specific segment of the multimedia stream.
5. The system of claim 1 , wherein the status of the subscriber is based upon the subscriber using a rewind function during playback of a specific segment of the multimedia stream.
6. The system of claim 1 , wherein the status of the subscriber is based upon the display of multimedia content associated with the multimedia stream by the subscriber for a predetermined period of time.
7. The system of claim 1 , wherein the status of the subscriber is based upon an agreement by the subscriber to pay a fee.
8. The system of claim 1 , wherein the finite state machine associated with the segment of the multimedia stream is embedded in a playlist associated with the multimedia stream.
9. A computer-implemented method, comprising:
associating a segment of a multimedia stream with a finite state machine, wherein the segment comprises one or more packets identifying the segment as an advertisement segment and one or more packets identifying the finite state machine controlling the availability of trickplay functions during playback of the segment;
associating a plurality of states in the finite state machine with one or more flags that control the availability, to a subscriber, of one or more user requested trickplay functions that may be performed on the segment of the multimedia stream during playback of the segment;
identifying a current state of the finite state machine associated with the segment of the multimedia stream based on the number of times one or more boundaries associated with the segment of the multimedia stream have been crossed; and
transitioning from the current state to a next state when one or more boundaries of the segment of the multimedia stream are crossed a predetermined number of times, the predetermined number of times being based upon a status of a subscriber receiving the segment of the multimedia stream.
10. The computer-implemented method of claim 9 , wherein the one or more flags control available trickplay behavior of a specific segment of the multimedia stream.
11. The computer-implemented method of claim 9 , wherein the one or more flags restrict user ability to fast-forward through or skip a specific segment of the multimedia stream.
12. The computer-implemented method of claim 9 , wherein the one or more flags restrict user ability to minimize the viewing window of a specific segment of the multimedia stream.
13. The computer-implemented method of claim 9 , wherein the status of the subscriber is based upon the subscriber using a rewind function during playback of a specific segment.
14. The computer-implemented method of claim 9 , wherein the status of the subscriber is based upon an agreement by the subscriber to pay a fee, the fee being based upon one or more trickplay functions requested by the subscriber.
15. One or more non-transitory computer readable media operable to execute on a processor, the computer readable being operable to cause the processor to perform the operations comprising:
associating a segment of a multimedia stream with a finite state machine, wherein the segment comprises one or more packets identifying the segment as an advertisement segment and one or more packets identifying the finite state machine controlling the availability of trickplay functions during playback of the segment;
associating a plurality of states in the finite state machine with one or more flags that control the availability, to a subscriber, of one or more user requested trickplay functions that may be performed on the segment of the multimedia stream during playback of the segment;
identifying an initial state of the finite state machine associated with the segment of the multimedia stream based on the number of times one or more boundaries associated with the segment of the multimedia stream have been crossed; and
transitioning to one or more other states when one or more boundaries of the segment of the multimedia stream are crossed a predetermined number of times, the predetermined number of times being based upon a status of a subscriber receiving the segment of the multimedia stream.
16. The one or more computer-readable media of claim 15 , wherein the one or more flags control available trickplay behavior of a specific segment of the multimedia stream.
17. The one or more computer-readable media of claim 15 , wherein the one or more flags restrict user ability to fast-forward, skip, mute the audio of, or minimize the viewing window of a specific segment of the multimedia stream.
18. The one or more computer-readable media of claim 15 , wherein the status of the subscriber is based upon the subscriber using a rewind function during playback of a specific segment.
19. The one or more computer-readable media of claim 15 , wherein the status of the subscriber is based upon an agreement by the subscriber to pay a fee, the fee being based upon one or more trickplay functions requested by the subscriber.