AWS MediaLive now passes KLV metadata in TS outputs

For teams running Transport Stream workflows in MediaLive, this adds a documented way to carry KLV metadata without leaving the service. The key constraint is standards compliance: SMPTE 336M-2007 is required, so existing metadata pipelines need to match that format before pass-through will work. In the broader streaming stack, this is a practical signal that metadata handling remains embedded in encoding and packaging tooling, not just in downstream systems. The next detail to watch is whether AWS expands the same KLV pass-through guidance to other MediaLive output types beyond TS.