Burst efficient fast program acquisition
Various methods, systems, and apparatuses can be used to perform burst efficient fast program acquisition. In some implementations, a burst efficient fast program acquisition system can operate to remove unused B-frame thereby reducing the bandwidth required for a fast burst. In other implementations, the burst efficient fast program acquisition system can decode the fast burst, identify the video frames needed for reassembly, and encode a truncated group of frames for fast burst transmission. A burst efficient fast program acquisition system can also use pre-calculated streamlined burst fast burst in conjunction with program prediction methods such as adjacent program and frequently viewed program thereby further reducing the latency associated with IPTV program acquisitions.
1. A burst efficient fast program acquisition system, comprising:
a network interface operable to receive an incoming signal comprising a program selection request;
a system processor coupled to the network interface, the system processor operable to generate a fast burst of a requested program comprising video frames to enable a user to view video images when the program selection request is made during a transmission of a group of pictures, the system processor being further operable to streamline the fast burst by identifying and removing only unused B-frames, the identifying and removing occurring based upon the system processor decoding the fast burst, truncating the fast burst to generate a truncated group of fast burst frames that does not include the unused B-frames, and recoding the truncated group of fast burst frames; and
wherein the network interface is further operable to transmit a single B-frame burst streamlined fast burst, based on the recoding of the truncated group of fast burst frames.
2. The burst efficient fast program acquisition system of claim 1 , wherein the removed B-frames are replaced with blank or trivial B-frames.
3. The burst efficient fast program acquisition system of claim 1 , wherein the unused B-frames are identified as expired B-frames.
4. The burst efficient fast program acquisition system of claim 3 , wherein the removed B-frames are replaced with blank B-frames.
5. The burst efficient fast program acquisition system of claim 3 , wherein the removed B-frames are replaced with trivial B-frames.
6. A burst efficient fast program acquisition system, comprising:
a network interface operable to receive an incoming signal comprising a program selection request;
a system processor coupled to the network interface, the system processor operable to generate a fast burst of a requested program comprising video frames to enable a user to view video images when the program selection request is made during a transmission of a group of pictures, the system processor being further operable to streamline the fast burst by decoding the fast burst, truncating the fast burst, and recoding a truncated group of fast burst frames, the system processor being operable to truncate the fast burst by identifying unused B-frames and removing only the unused B-frames to generate the truncated group of fast burst frames; and
wherein the network interface is further operable to transmit a single recoded burst streamlined fast burst, based on the recoding of the truncated group of fast burst frames, responsive to the program selection request.
7. The burst efficient fast program acquisition system of claim 6 , wherein the truncated group includes pre join I-frames and P-frames from the group of pictures.
8. The burst efficient fast program acquisition system of claim 6 , wherein the system processor encodes a truncated group with a lower video resolution.
9. The burst efficient fast program acquisition system of claim 7 , wherein the system processor encodes a truncated group with a lower video resolution.
10. A computer implemented method comprising:
receiving, via a network interface coupled to a system processor, a program selection request;
generating, in one or more processors of the system processor, a fast burst;
streamlining, in the one or more processors, the fast burst with frame modification to produce a streamlined fast burst,
wherein the frame modification comprises identifying unused B-frames and removing only the unused B-frames from a group of pictures while leaving other B-frames, and further wherein the identifying and removing steps performed in the one or more processors comprise decoding the fast burst, truncating the fast burst to generate a truncated group of fast burst frames that does not include the unused B-frames, and recoding the truncated group of fast burst frames; and
transmitting, by a unicast transmission via the network interface, a single B-frame burst streamlined fast burst, based on the recoding of the truncated group of fast burst frames, to a user for reconstruction of a group of pictures.
11. The computer implemented method of claim 10 , wherein the frame modification is removal of unused B-frames.
12. The computer implemented method of claim 11 , further comprising replacing removed B-frames with trivial B-frames.
13. The computer implemented method of claim 11 , further comprising replacing removed B-frames with blank B-frames.
14. The computer implemented method of claim 10 , wherein the frame modification is decoding the fast burst frames and encoding a truncated group of frames.
15. The computer implemented method of claim 14 , further comprising encoding the truncated group of frames at a lower frame resolution.
16. A computer implemented method comprising:
predicting, in a system processor, a program selection request;
generating, in the system processor, a fast burst;
streamlining, in the system processor, the fast burst with frame modification to produce a streamlined fast burst, the frame modification including decoding a group of pictures, truncating the group of pictures to generate a truncated group of pictures based on the decoded group of pictures, and recoding the truncated group of pictures, the system processor being operable to truncate the group of pictures by identifying unused B-frames and removing only the unused B-frames to generate the truncated group of pictures; and
transmitting a single recoded burst streamlined fast burst, based on the recoding of the truncated group of pictures, to a user in a unicast stream for reconstruction of a group of pictures after a predicted program selection.
17. The computer implemented method of claim 16 , wherein the prediction is based on related programs from a current program viewed by the user.
18. The computer implemented method of claim 17 , wherein the frame modification is removal of unused B-frames.
19. The computer implemented method of claim 17 , wherein the frame modification is decoding the fast burst frames and encoding a truncated group of frames.
20. The computer implemented method of claim 16 , wherein the prediction is based on frequently viewed programs by the user.
21. The computer implemented method of claim 20 , wherein the frame modification is removal of unused B-frames.
22. The computer implemented method of claim 20 , wherein the frame modification is decoding the fast burst frames and encoding a truncated group of frames.