System and method for synchronizing timing across multiple streams

摘要

Systems and methods of adaptive streaming are discussed. Transcoded copies of a source stream may be aligned with one another such that the independently specified portions of each transcoded stream occur at the same locations within the content. These transcoded copies may be produced by one or more transcoders, whose outputs are synchronized by a delay adjuster. A fragmenter may use the synchronized and aligned streams to efficiently produce fragments suitable for use in adaptive streaming.

主权项

1. A method comprising:
receiving, at a computing device, a plurality of transcodings of a common content item; determining, within the common content item, when a location comprising a first reference point occurs; determining a time, for each of the plurality of transcodings, when a location comprising the first reference point within each of the plurality of transcodings occurs; based on the determined time for each of the plurality of transcodings, calculating an amount of delay for each of the plurality of transcodings, such that delaying each of the plurality of transcodings by the amount of delay calculated for each of the plurality of transcodings allows for the first reference point to occur at a same time for each of the plurality of transcodings, wherein an amount of delay calculated for a first transcoding is different from an amount of delay calculated for a second transcoding; and outputting the plurality of transcodings from the computing device, wherein the outputting the plurality of transcodings comprises delaying each of the plurality of transcodings based on the amount of delay calculated for each of the plurality of transcodings.