A media flow transport security manager of a hybrid cloud-based media production system having a network orchestrator and an extensible resource manager (ERM) includes a firewall communicatively coupled to a computing platform having a hardware processor and a memory storing a security software code. The hardware processor executes the security software code to communicate with the network orchestrator to identify multicast production media flow(s) for processing in a cloud-based virtual production environment, and to communicate with the ERM to obtain an identifier of each cloud-based resource used for processing cloud production media flow(s) corresponding to the identified multicast production media flow(s). The hardware processor also executes the security software code to receive an alert that the cloud production media flow(s) have been processed to generate corresponding post-production cloud media flow(s), and to route, using the obtained identifier of the cloud-based resource(s), the post-production cloud media flow(s) through the firewall.

In one example, a method includes monitoring a delivery of an item of multimedia content to a first user endpoint device in a first stream of data, monitoring a delivery of the item of multimedia content to a second user endpoint device in a second stream of data, consolidating the stream of data and the second stream of data into a third stream of data, sending an first instruction to a source of the first stream of data and a source of the second stream of data to cease delivering the first stream of data and the second stream of data, and sending a second instruction to the source of the first stream of data and the source of the second stream to begin delivering the third stream of data to the first user endpoint device and the second user endpoint device.

Described is a method of delivering content over network using an approach referred to here as “Multicast Assisted Unicast Delivery” (MAUD), as a multicast network is used to assist, rather than substituting for, an otherwise unicast path. Content is requested by client devices from a content server over unicast. These unicast requests are sent via a first and a second proxy, before being sent by the second proxy to the content server, all over unicast. The responses containing the requested content is sent back to the second proxy over unicast from the content server. The second proxy processes the received unicast responses and sends the responses over a multicast stream to the first proxy. The first proxy processes the received responses and sends them onto the requesting client devices over unicast.

The system and methods described aid content delivery by providing requested content using a hybrid delivery of unicast and multicast content. A content delivery system receives, from user equipment, a request for content and identifies multicast sources for the content. The content delivery system determines a recent multicast source from the multicast sources, the recent multicast source having begun more recently relative to the other sources. The content delivery system transmits, to the user equipment, an identity of the recent multicast source and provides a beginning portion of the content to the user equipment via a unicast stream.

Techniques are described for optimizing streaming video encoding profiles.

A method and system are described wherein a terminal sends, to a server, a video request message that includes an identifier of a virtual reality (VR) video. The VR video comprises N sub-bitstreams. The terminal receives a video response message sent by the server. The video response message indicates multicast addresses respectively corresponding to the N sub-bitstreams, and the terminal determines a target sub-bitstream based on a current field of view of a user, and obtains the target sub-bitstream based on a multicast address corresponding to the target sub-bitstream. The multicast address is one of the multicast addresses, and the target sub-bitstream comprises at least one sub-bitstream of the N sub-bitstreams.

A system is provided for publishing a disparate live media output stream manifest that includes media segments corresponding to key events. A live production and playout system of disparate sub-systems is synchronized to a reference clock. A timecode from the reference clock is used as a reference time to log content related to key events that occur within the live production and playout system. A live event logging system is synchronized to the reference clock same as the live production and playout system. Based on location of the live event logging system, a time offset is introduced to compensate for a delay. When delay is variable, the reference clock is decoded from a live input stream to associate each key event with a corresponding timecode. Based on a programming schedule comprising the key events that occurred in the live input stream, the disparate live media output stream manifest is published.

Systems and methods for rewinding a video to a point before the video was first viewed. Video transmitted by a media source is cached by a remote server. Upon a trick-play request for the video, the server generates a rewind stream that includes the video that was transmitted by the media source before the user started to view the video. Upon receiving the rewind stream, the user's equipment may cache the rewind stream in a rewind buffer and rewind or play from the rewind buffer. The server may also generate and transmit a forward stream of the video that the media source has not yet transmitted. The user's equipment may cache the forward stream in a forward buffer. To perform trick-play operations with the video, the user's equipment may migrate the playback of the video to the rewind and forward buffers and rewind or fast-forward the video from the buffers.

A hybrid cloud-based media production system includes a facility extension platform having a hardware processor and a memory storing a software code. The hardware processor executes the software code to identify multicast production media flow(s) for processing in a cloud-based virtual production environment, to identify cloud-based resource(s) for processing one or more cloud production media flow(s) corresponding to the multicast production media flow(s), in the cloud-based virtual production environment, and to coordinate provisioning of the cloud-based virtual production environment with the identified cloud-based resource(s). The hardware processor also executes the software code to align, using a cloud permissible timing protocol, the timing of the cloud production media flow(s) in the cloud-based virtual production environment, and to process the cloud production media flow(s) in the cloud-based virtual production environment using the identified cloud-based resource(s).

Systems and methods are described herein for transmitting a content item to a user device using multiple delivery protocols. The system receives, at a content source, a request for the content item from the user device. The system splits a digital stream of the content item into a first video signal and a second video signal. The system then transmits, via a unicast server, the first video signal for the content item to the user device, and transmits, via a multicast server, the second video signal for the content item to the user device. The system then causes for presentation on the user device the first video signal followed by the second video signal. In other embodiments, the system is optimized between the unicast delivery of a content item and a peer-to-peer delivery.