Dynamic insertion of content within live streaming video

A computer-implemented method comprising:

• accessing live manifest data in association with a live video stream;
• as updated live manifest data for the live video stream is received during the live video stream, causing the updated live manifest data to be stored as cached manifest data;
• receiving, from a client device over a network, a request to view the live video stream on the client device;
• in response to the request, beginning passing initial manifest data to the client device to initiate streaming video playback on the client device, wherein the initial manifest data is retrieved from the cached manifest data and identifies delayed video content relative to current live video content of the live video stream;
• determining a first position in the live video stream to incorporate supplemental content;
• based on the first position, retrieving one or more original video segments identified in the live manifest data in which to insert the supplemental content;
• initiating generation of one or more replacement video segments, wherein one or more individual frames of the one or more replacement video segments depict at least portions of the supplemental content integrated within or overlaid over a corresponding one or more frames of video content from the one or more original video segments;
• generating revised manifest data that includes references to the one or more replacement video segments instead of the corresponding one or more frames of video content from the one or more original video segments;
• and
• sending, over the network, the revised manifest data to the client device, such that the revised manifest data causes the client device to present a delayed version of the live video stream with at least portions of the supplemental content integrated within or overlaid over portions of the live video stream.

A computer-readable, non-transitory storage medium storing computer executable instructions that, when executed by one or more computer systems, configure the one or more computer systems to perform operations comprising:

• accessing live manifest data in association with a live video stream;
• as updated live manifest data for the live video stream is received during the live video stream, causing the updated live manifest data to be stored as cached manifest data;
• receiving, from a client device over a network, a request to view the live video stream on the client device;
• in response to the request, beginning passing initial manifest data to the client device to initiate streaming video playback on the client device, wherein the initial manifest data is retrieved from the cached manifest data and identifies delayed video content relative to current live video content of the live video stream;
• determining a first position in the live video stream to incorporate supplemental content;
• based on the first position, retrieving one or more original video segments identified in the live manifest data in which to insert the supplemental content;
• initiating generation of one or more replacement video segments, wherein one or more individual frames of the one or more replacement video segments depict at least portions of the supplemental content integrated within or overlaid over a corresponding one or more frames of video content from the one or more original video segments;
• generating revised manifest data that includes references to the one or more replacement video segments instead of the corresponding one or more frames of video content from the one or more original video segments;
• and
• sending, over the network, the revised manifest data to the client device, such that the revised manifest data causes the client device to present a delayed version of the live video stream with at least portions of the supplemental content integrated within or overlaid over portions of the live video stream.