# Mux: Major incident: Increased re-buffering and errors for some assets and live streams

**Summary:** Mux reported a major degradation affecting Mux Video - Live and Mux Video - VOD: some streams and on-demand assets had increased startup times, re-buffering, and playback errors from 429 errors. It started at 2026-04-22 18:10 UTC and was resolved at 2026-04-22 19:46 UTC, lasting 1 h 36 min; Mux reported implementing a fix. _(machine-written, sol)_
- Kind: Major incident · Label: degradation (model (Jev))
- Changed: 2026-04-22 18:10 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/mz9pzx1hv4gj](https://stspg.io/mz9pzx1hv4gj)
- [Company: Mux](https://rewindex.com/company/mux.md)
- Versions: before (none: first archived) → after incident\_version:197/n5hmy21b43pg@389a93966efb
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Increased re-buffering and errors for some assets and live streams
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-04-22 18:10 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-04-22 19:46 UTC
```

**6. Added: Affected components**

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

**7. Added: Update** (investigating) · 2026-04-22 18:10 UTC

```diff
+ We are investigating increased startup times, re-buffering, and playback errors from 429 errors on some live streams and on-demand assets.
```

**8. Added: Update** (monitoring) · 2026-04-22 18:52 UTC

```diff
+ A fix has been implemented and we are monitoring the results.
```

**9. Added: Update** (resolved) · 2026-04-22 19:46 UTC

```diff
+ This incident has been resolved.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-04-22 18:10 UTC | Major incident: Increased re-buffering and errors for some assets and live streams (this change) | degradation |

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/if2123ea3c24e9c · Markdown: https://rewindex.com/change/if2123ea3c24e9c.md · JSON: https://rewindex.com/api/v1/changes/if2123ea3c24e9c · Generated 2026-10-18T03:22:18.467Z