Centralized streaming video composition

A method of processing composite streaming video in connection with centralized services, the method comprising:

• receiving, at the centralized service, a request to initiate mixing a composite video live stream, the request indicating:
• one or more constituent video streams,
• one or more streaming video assets,
• at least one rendering template, and
• a media provider for disseminating the composite video live stream;
• receiving, at a mixing server, the one or more constituent video streams and the one or more streaming video assets;
• rendering the composite video live stream based on the one or more constituent video streams and the one or more streaming video assets using an encoding web browser on the mixing server without displaying, by the encoding web browser, the composite video live stream, the encoding web browser having a simulated screen,
• wherein the simulated screen is not connected to a physical display, and
• wherein the encoding web browser comprises a browser rendering engine configured to render the composite video live stream as a web page in memory based on the at least one rendering template;
• capturing the rendered composite video live stream from the simulated screen as a standardized encoded video stream format;
• in response to determining that the media provider is configured to receive a specific media stream format, encoding the standardized encoded video stream into the specific encoded media stream format;
• and
• transmitting the specific encoded media stream format to the media provider.

A system comprising at least one processor and at least one non-transitory memory storing computer executable instructions that when executed by the at least one processor cause the system to carry out actions comprising:

• receiving, at a centralized service, a request to initiate mixing a composite video live stream, the request indicating:
• one or more constituent video streams,
• one or more streaming video assets,
• at least one rendering template, and
• a media provider for disseminating the composite video live stream;
• receiving, at a mixing server, the one or more constituent video streams and the one or more streaming video assets;
• rendering the composite video live stream based on the one or more constituent video streams and the one or more streaming video assets using an encoding web browser on the mixing server without displaying, by the encoding web browser, the composite video live stream, the encoding web browser having a simulated screen,
• wherein the simulated screen is not connected to a physical display, and
• wherein the encoding web browser comprises a browser rendering engine configured to render the composite video live stream as a web page in memory based on the at least one rendering template;
• capturing the rendered composite video live stream from the simulated screen as a standardized encoded video stream format;
• in response to determining that the media provider is configured to receive a specific media stream format, encoding the standardized encoded video stream into the specific encoded media stream format;
• and
• transmitting the specific encoded media stream format to the media provider.