Abstract: Techniques for synchronized interleaved watermarking are described. In various embodiments, a headend provisions control words (CWs), generates entitlement control messages (ECMs) for producing the CWs, where each of the ECMs is associated with a watermark identifier (WMID) symbol index assigned to a watermark cryptoperiod, moves portion(s) from a video stream to auxiliary streams, generates versions of the portion(s) to embed watermark symbols within the watermark cryptoperiod, where each version represents a respective watermark symbol, and encrypts the versions using the CWs at start of the watermark cryptoperiod. On the client side, a client device storing a WMID obtains the video and encrypted auxiliary streams and the ECMs referencing the WMID symbol index and selects and decrypts an auxiliary stream using a CW during the watermark cryptoperiod based on the respective watermark symbol, the WMID symbol index, and the WMID before re-multiplexing the video and auxiliary streams for rendering.

Abstract: Techniques for broadcast in-home streaming are described. In some embodiments, the method is performed at a gateway device. The gateway device demultiplexes a broadcast stream to a plurality of streams, including a first stream and a second stream and anchors a first presentation time range of a first segment based on a random access point in the first stream and a first frame in the second stream. The gateway device also identifies one or more frames in the first stream based on presentation timestamps and decoding timestamps of a last frame in the first presentation time range and a first frame in a second presentation time range. The gateway device further captures frames from the second stream within the first presentation time range and generates the first segment having the first presentation time range, including the random access point, the one or more frames, the first frame, and the frames.

Abstract: Techniques for broadcast in-home streaming are described. In some embodiments, the method is performed at a gateway device. The gateway device demultiplexes a broadcast stream to a plurality of streams, including a first stream and a second stream and anchors a first presentation time range of a first segment based on a random access point in the first stream and a first frame in the second stream. The gateway device also identifies one or more frames in the first stream based on presentation timestamps and decoding timestamps of a last frame in the first presentation time range and a first frame in a second presentation time range. The gateway device further captures frames from the second stream within the first presentation time range and generates the first segment having the first presentation time range, including the random access point, the one or more frames, the first frame, and the frames.