Efficient Session-Based Watermarking for ABR TV using Sample Variants (2018)

By Raj Nair & Prabhu Navali, Ericsson Media Solutions

Session-based watermarking is on track to becoming a requirement for premium content (4K, Early Window, etc). A common approach to watermarking for ABR delivery is to use manifest files to create streams that are uniquely identified by the segment sequences. However, the storage requirements of the content is a multiple of the number of variants of a segment. In this paper, we discuss an efficient way of creating watermarked segment variants using the Sample Variants approach. Here only a small percent storage overhead is needed for each segment variant. Another advantage is that this approach scales to handle a larger population of viewers by using multiple variants with the same resource cost.

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