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NS_E_NO_REALTIME_TIMECOMPRESSION
NS_E_NO_REALTIME_TIMECOMPRESSION: the failing boundary
NS_E_NO_REALTIME_TIMECOMPRESSION (0xC00D1B86) means It is not possible to apply time compression to a broadcast session. The important boundary is live encoding capability; do not replace this result with a broader “Windows Media failed” diagnosis.
What this result proves
This code proves that time compression is not supported for a live broadcast session. It does not, by itself, prove a codec, permissions, network, device, or media problem outside that boundary. Preserve the first lower-level result when one exists, because later Player or Encoder errors can hide the original cause.
Evidence and focused verification
Keep the live source and profile fixed and remove the time-compression request; do not diagnose codecs or network transport unless a later call fails there. Keep the media object, endpoint, profile, or device identity fixed while changing only that rejected precondition. A successful retest should pass this exact boundary; a different HRESULT from a later stage is new evidence, not recurrence of NS_E_NO_REALTIME_TIMECOMPRESSION.
Technical references
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