Shaka Error 6001 May 2026

Adaptive Bitrate (ABR) streaming relies on robust manifest parsing. Shaka Player, a popular open-source library, defines a strict error taxonomy. However, a subset of users has reported a cryptic Error 6001 with the message: “Unexpected state in segment iterator.” This error is not listed in the official documentation [1], suggesting a deeper, possibly environment-specific, fault.

| Condition | Value | Outcome | | :--- | :--- | :--- | | HLS version | v8 (LL-HLS) | Required | | Partial segment delta | < 50 ms | Required | | Manifest duration | 4 seconds | Required | | Server-side part hold-back | Decreasing by 10% per chunk | Triggers error in < 30s | shaka error 6001

Under these conditions, the player crashes with Error 6001 on Chromium 122+ and Safari 17.2. Adaptive Bitrate (ABR) streaming relies on robust manifest

Through reverse engineering of minified Shaka code (version 4.3.x), we trace the error to the update_() function within manifest_parser.js . Under normal conditions, the updatePeriod() method flushes old segments. However, when the server sends overlapping EXTINF durations and contradictory EXT-X-PART cues, the SegmentIndex ’s fit() function fails to resolve the timeline. This creates a circular reference in the segment object graph. During the next updateManifest() cycle, the recursive resolveTimeline_() function iterates indefinitely until the browser throws a Maximum call stack size exceeded error. Shaka’s global error handler lacks a specific code for recursion overflow and defaults to 6001 . | Condition | Value | Outcome | |

player.addEventListener('error', (event) => if (event.detail.code === 6001) console.warn('Shaka Error 6001: Recursive manifest detected. Resetting...'); player.unload(); setTimeout(() => player.configure('manifest.hls.ignoreManifestUpdates', true); player.load(originalManifestUri); setTimeout(() => player.configure('manifest.hls.ignoreManifestUpdates', false); , 10000); , 1000); ); Shaka Error 6001 is not a standard player error but a symptom of a runtime recursion fault triggered by aggressive low-latency HLS partial segments. Since the Shaka maintainers have not assigned a permanent code to this fault, developers must implement defensive application-layer recovery. Future work includes patching the Shaka player to catch RangeError natively and map it to a documented code (e.g., 6010 – “Manifest recursion limit”).

[1] Google. (2024). Shaka Player Error Codes . GitHub Repository. [2] Pantos, R. (2022). HTTP Live Streaming 2nd Edition . IETF Draft. Note: As of my knowledge cutoff in May 2025, "Shaka Error 6001" is not a real, documented error. This paper is a fictional technical analysis for illustrative purposes.

Author: [Generated AI] Date: April 14, 2026