Methods for efficiently combining partial ABR recordings

摘要

Recording reconstruction from multiple overlapping recordings may be provided. New recorders may copy manifests from working recorders, as opposed to reconstructing from failed recorders, to construct manifests that refer to video fragments from different recorders. Origin servers may follow these reconstructed manifests to obtain any fragment in the recording, in any combination of recorder failure/take-over/restart, as long as there was at least one recorder functioning at all times.

主权项

1. A method comprising:
initiating a primary recorder to record a program, the primary recorder maintaining a primary recorder manifest corresponding to the primary recorder recording the program; initiating a secondary recorder to record the program, the secondary recorder maintaining a secondary recorder manifest corresponding to the secondary recorder recording the program; detecting failure of the secondary recorder; and initiating a tertiary recorder to record the program in response to detecting failure of the secondary recorder, the tertiary recorder maintaining a tertiary recorder manifest corresponding to the tertiary recorder recording the program wherein the tertiary recorder maintaining the tertiary recorder manifest comprises,
receiving a copy of the primary recorder manifest covering from when the primary recorder began to record the program to when the tertiary recorder began to record the program, andprepending the received copy of the primary recorder manifest to the tertiary recorder manifest.