Outage in Mux
video clips audio loss
Resolved MajorIncident Report
Summary AI Generated
A recent encoding change caused video clips created in the last 24 hours to lose their audio due to initialization metadata mismatches, specifically affecting clips from assets created before March 6, 15:11 UTC that used "basic" or "premium" video quality settings. The issue impacted Mux Video VOD service for 3.1 hours before engineers resolved the underlying problem. New clips now function correctly, but affected clips created during the incident require recreation from the original assets as they cannot be retroactively fixed.
A recent encoding change caused a mismatch in initialization metadata for some clips that were created in the last 24 hours. This would affect clips of assets created before Thursday, March 6 — 15:11 UTC that utilized "basic" or "premium" video_quality. A fix is currently being worked on.
Components affected
Mux Video - VODNeed to monitor Mux outages?
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Latest Updates ( sorted recent to last )
RESOLVED
about 1 hour ago - at 03/07/2026 01:57AM
Engineers have resolved the issue with clips not having audio. Any new clips will function as expected. Impacted clips created during the incident window are not retroactively corrected, but can be re-created from the original asset.
IDENTIFIED
about 4 hours ago - at 03/06/2026 10:57PM
A recent encoding change caused a mismatch in initialization metadata for some clips that were created in the last 24 hours. This would affect clips of assets created before Thursday, March 6 — 15:11 UTC that utilized "basic" or "premium" video_quality. A fix is currently being worked on.
Latest Mux outages
Mux Data Monitoring Issues - 4 days ago
Monitoring dashboard data delayed - about 1 month ago
Corruption on some segments of some videos - about 1 month ago
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