# Mux: Major incident: Elevated error rates for video ingest and playback for assets and live streams

**Summary:** Mux reported a major outage with elevated video ingest and playback error rates affecting Mux Video - Live and Mux Video - VOD. It started at 2025-09-22 16:44 UTC and was resolved at 2025-09-22 21:36 UTC, lasting 4 h 51 min. Mux implemented a fix but did not state a root cause. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2025-09-22 16:44 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/1kyy65twx086](https://stspg.io/1kyy65twx086)
- [Company: Mux](https://rewindex.com/company/mux.md)
- Versions: before (none: first archived) → after incident\_version:197/8y4zzslm4jgl@e429613a7f97
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Elevated error rates for video ingest and playback for assets and live streams
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2025-09-22 16:44 UTC
```

**5. Added: Resolved time**

```diff
+ 2025-09-22 21:36 UTC
```

**6. Added: Affected components**

```diff
+ Mux Video - Live, Mux Video - VOD
```

**7. Added: Update** (investigating) · 2025-09-22 16:44 UTC

```diff
+ The previous status update was marked resolved unintentionally. Our systems are still experiencing elevated error rates, and our team is actively investigating.
```

**8. Added: Update** (identified) · 2025-09-22 17:40 UTC

```diff
+ Error rates have improved and returning to normal. The team are continuing to investigate the root cause of this error spike. We will continue to provide updates as we have more details.
```

**9. Added: Update** (monitoring) · 2025-09-22 18:56 UTC

```diff
+ Our team has implemented a fix to resolve the issue, and is monitoring the situation. Though we believe the issue is resolved for all users, we will be monitoring and will post an update as soon as the issue is fully resolved.
```

**10. Added: Update** (monitoring) · 2025-09-22 19:25 UTC

```diff
+ We are continuing to monitor for any further issues.
```

**11. Added: Update** (resolved) · 2025-09-22 21:36 UTC

```diff
+ This Incident has been Resoled.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2025-09-22 16:44 UTC | Major incident: Elevated error rates for video ingest and playback for assets and live streams (this change) | outage |

All Mux changes: [timeline](https://rewindex.com/company/mux/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._


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Canonical: https://rewindex.com/change/i1085c7c8f98ceb · Markdown: https://rewindex.com/change/i1085c7c8f98ceb.md · JSON: https://rewindex.com/api/v1/changes/i1085c7c8f98ceb · Generated 2026-10-18T03:55:48.200Z