Mapping packet identifiers of received content to a constant value
Methods, systems, and computer readable media can be operable to facilitate the mapping of packet identifiers to a constant value. A multimedia device may receive one or more pieces of multimedia content and may select a constant PID value for each of one or more component streams associated with the content. The multimedia device may map PIDs of each respective one of the one or more component streams to a constant PID value designated for the component type of the respective component stream. The multimedia device may replace the PIDs of each component stream with constant PID values such that each component stream type includes the same PID value for the entirety of the stream. The modified component streams, each having continuity with respect to PID values, may be stored as a recording or output to a device for viewing.
1. A method comprising:
receiving a transport stream carrying one or more component streams associated with a piece of content, wherein each respective one of the one or more component streams comprises an original packet identifier;
acquiring a program map table associated with the transport stream;
using the program map table, identifying an original packet identifier of one or more of the component streams;
parsing the one or more of the component streams from the transport stream;
determining a constant packet identifier value for each respective one of one or more component stream types, wherein the constant packet identifier value is selected from one or more values that do not fall within a range of reserved packet identifier values;
for each respective one of the one or more component streams, identifying a component stream type associated with the respective component stream;
for each respective one of the one or more component streams, creating a modified component stream by replacing the original packet identifier with the constant packet identifier value determined for the component stream type associated with the respective component stream; and
outputting the one or more modified component streams.
2. The method of claim 1 , wherein one or more of the component streams associated with the piece of content comprises a plurality of segments, wherein the original packet identifiers of each of the plurality of segments are not the same.
3. The method of claim 1 , further comprising:
configuring one or more audio and video processors with the constant packet identifier values determined for each of the one or more component stream types.
4. The method of claim 1 , wherein outputting the one or more modified component streams comprises outputting the one or more modified component streams to storage as a recording.
5. The method of claim 1 , wherein outputting the one or more modified component streams comprises streaming the one or more modified component streams to a client device.
6. The method of claim 1 , wherein outputting the one or more modified component streams comprises processing the one or more modified component streams for output to a display device.
7. The method of claim 1 , wherein determining a constant packet identifier value for each respective one of one or more component stream types comprises selecting an unused value from a range of user ancillary packet identifier values.
8. An apparatus comprising:
an interface configured to be used to receive a transport stream carrying one or more component streams associated with a piece of content, wherein each respective one of the one or more component streams comprises an original packet identifier; and
one or more modules configured to:
acquire a program map table associated with the transport stream;
using the program map table, identify an original packet identifier of one or more of the component streams;
parse the one or more of the component streams from the transport stream;
determine a constant packet identifier value for each respective one of one or more component stream types, wherein the constant packet identifier value is selected from one or more values that do not fall within a range of reserved packet identifier values;
identify, for each respective one of the one or more component streams, a component stream type associated with the respective component stream;
create, for each respective one of the one or more component streams, a modified component stream by replacing the original packet identifier with the constant packet identifier value determined for the component stream type associated with the respective component stream; and
output the one or more modified component streams.
9. The apparatus of claim 8 , wherein one or more of the component streams associated with the piece of content comprises a plurality of segments, wherein the original packet identifiers of each of the plurality of segments are not the same.
10. The apparatus of claim 8 , wherein outputting the one or more modified component streams comprises outputting the one or more modified component streams to storage as a recording.
11. The apparatus of claim 8 , wherein outputting the one or more modified component streams comprises streaming the one or more modified component streams to a client device.
12. The apparatus of claim 8 , wherein outputting the one or more modified component streams comprises processing the one or more modified component streams for output to a display device.
13. The apparatus of claim 8 , wherein determining a constant packet identifier value for each respective one of one or more component stream types comprises selecting an unused value from a range of user ancillary packet identifier values.
14. One or more non-transitory computer readable media having instructions operable to cause one or more processors to perform the operations comprising:
receiving a transport stream carrying one or more component streams associated with a piece of content, wherein each respective one of the one or more component streams comprises an original packet identifier;
acquiring a program map table associated with the transport stream;
using the program map table, identifying an original packet identifier of one or more of the component streams;
parsing the one or more of the component streams from the transport stream;
determining a constant packet identifier value for each respective one of one or more component stream types, wherein the constant packet identifier value is selected from one or more values that do not fall within a range of reserved packet identifier values;
for each respective one of the one or more component streams, identifying a component stream type associated with the respective component stream;
for each respective one of the one or more component streams, creating a modified component stream by replacing the original packet identifier with the constant packet identifier value determined for the component stream type associated with the respective component stream; and
outputting the one or more modified component streams.
15. The one or more non-transitory computer-readable media of claim 14 , wherein one or more of the component streams associated with the piece of content comprises a plurality of segments, wherein the original packet identifiers of each of the plurality of segments are not the same.
16. The one or more non-transitory computer-readable media of claim 14 , wherein the instructions are further operable to cause one or more processors to perform the operations comprising:
configuring one or more audio and video processors with the constant packet identifier values determined for each of the one or more component stream types.
17. The one or more non-transitory computer-readable media of claim 14 , wherein outputting the one or more modified component streams comprises outputting the one or more modified component streams to storage as a recording.
18. The one or more non-transitory computer-readable media of claim 14 , wherein outputting the one or more modified component streams comprises streaming the one or more modified component streams to a client device.
19. The one or more non-transitory computer-readable media of claim 14 , wherein outputting the one or more modified component streams comprises processing the one or more modified component streams for output to a display device.
20. The one or more non-transitory computer-readable media of claim 14 , wherein determining a constant packet identifier value for each respective one of one or more component stream types comprises selecting an unused value from a range of user ancillary packet identifier values.