Technical Specification for the Delivery of Television Programs to the BBC [pdf]
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dpp-assets.s3.amazonaws.com
Previously: https://news.ycombinator.com/item?id=14612537
For live, or near-live, programs, the standard is http://dpp-assets.s3.amazonaws.com/wp-content/uploads/specs/...
It's probably something really minor they disagree about, or they just haven't gotten around to it.