Edge cache segment prefetching
Devices, computer-readable media, and methods for pre-loading video chunks of a video program at an edge server are disclosed. For example, a processor may receive a manifest file for a video program, determine a bitrate for a first segment of the video program, request a video chunk of the first segment at the first bitrate from an edge server in accordance with the manifest file, and request a subset of a video chunk of a second segment of the video program from the edge server.
1. A device comprising:
programmable circuitry;
a memory that stores executable instructions that, when executed or instantiated by the programmable circuitry, cause the programmable circuitry to perform operations including:
determining a first bitrate for a first video portion based on a capability of the device and a first network condition, the first bitrate selected from among a plurality of available bitrates for the first video portion indicating in a manifest file;
causing transmission of a first request including a range request for the first video portion, the first request to include an indication of the first bitrate;
determining a state of a buffer of the device;
determining a second bitrate based on the state of the buffer, the capability of the device, and a second network condition;
causing transmission of a second request for a second video portion, the second request to include an indication of the second bitrate; and
storing the second video portion in the buffer of the device;
wherein the first request identifies the first video portion with a range request.
2. The device of claim 1 , wherein the state of the buffer is a buffer occupancy level.
3. The device of claim 1 , wherein the first network condition is a network bandwidth.
4. The device of claim 1 , wherein the operations include determining the second bitrate as a bitrate at which an occupancy level of the buffer can be maintained by received video portions.
5. The device of claim 1 , wherein the first request is to be transmitted to a first server and the first server stores a first copy of the first video portion at the first bitrate and a second copy of the first video portion at the second bitrate.
6. The device of claim 1 , wherein the operations include obtaining the manifest file, wherein the manifest file is tailored to the capability of the device.
7. A non-transitory computer-readable medium storing instructions which, when executed by a processor of a device, cause the processor to perform operations, the operations comprising:
determining a first bitrate for a first video portion based on a capability of the device and a first network condition, the first bitrate selected from among a plurality of available bitrates for the first video portion indicating in a manifest file;
causing transmission of a first request including a range request for the first video portion, the first request to include an indication of the first bitrate;
determining a state of a buffer of the device;
determining a second bitrate based on the state of the buffer, the capability of the device, and a second network condition;
causing transmission of a second request for a second video portion, the second request to include an indication of the second bitrate; and
storing the second video portion in the buffer of the device.
8. The non-transitory computer-readable medium of claim 7 , wherein the state of the buffer is a buffer occupancy level.
9. The non-transitory computer-readable medium of claim 7 , wherein the first network condition is a network bandwidth.
10. The non-transitory computer-readable medium of claim 7 , wherein the instructions cause the processor to determine the second bitrate as a bitrate at which an occupancy level of the buffer can be maintained by received video portions.
11. The non-transitory computer-readable medium of claim 7 , wherein the first request is to be transmitted to a first server and the first server stores a first copy of the first video portion at the first bitrate and a second copy of the first video portion at the second bitrate.
12. The non-transitory computer-readable medium of claim 7 , wherein the instructions cause the processor to obtain the manifest file, wherein the manifest file is tailored to the capability of the device.
13. A method comprising:
determining a first bitrate for a first video portion based on a capability of a device and a first network condition, the first bitrate selected from among a plurality of available bitrates for the first video portion indicating in a manifest file;
causing transmission of a first request including a range request for the first video portion, the first request to include an indication of the first bitrate;
determining a state of a buffer of the device;
determining a second bitrate based on the state of the buffer, the capability of the device, and a second network condition;
causing transmission of a second request for a second video portion, the second request to include an indication of the second bitrate; and
storing the second video portion in the buffer of the device.
14. The method of claim 13 , wherein the state of the buffer is a buffer occupancy level.
15. The method of claim 13 , wherein the first network condition is a network bandwidth.
16. The method of claim 13 , further including determining the second bitrate as a bitrate at which an occupancy level of the buffer can be maintained by received video portions.
17. The method of claim 13 , wherein the first request is to be transmitted to a first server and the first server stores a first copy of the first video portion at the first bitrate and a second copy of the first video portion at the second bitrate.