| CPC H04L 1/0002 (2013.01) [H04L 5/0053 (2013.01); H04L 43/0805 (2013.01); H04L 43/0864 (2013.01); H04W 28/16 (2013.01)] | 45 Claims |

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1. One or more non-transitory computer-readable media storing processor-executable instructions that, when executed by at least one processor, cause the at least one processor to:
receive a request for a portion of a content item at a first bitrate;
determine, based on at least one network condition, a second bitrate for the portion of the content item; and
send, to a user device, the portion of the content item at the second bitrate, wherein the portion of the content item sent at the second bitrate is identified with an identifier of the portion of the content item at the first bitrate.
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