Shaka Error 6001 May 2026

[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.

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 . shaka error 6001

Shaka Error 6001 is an undocumented runtime exception observed in streaming applications utilizing the Shaka Player library. While the Shaka Player typically reports error codes within the 1000-5999 range (e.g., 1001 for network, 2001 for manifest parsing), empirical evidence from production logs indicates the emergence of a non-standard 6001 error under specific low-latency HLS (LL-HLS) and fragmented MP4 (fMP4) conditions. This paper hypothesizes that Error 6001 originates not from the player’s core logic but from a JavaScript engine’s internal out-of-memory (OOM) or recursion limit violation, triggered by an infinite or self-referential manifest update loop. We propose a detection mechanism and a client-side mitigation strategy.

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 | |

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”).

Under these conditions, the player crashes with Error 6001 on Chromium 122+ and Safari 17.2. GitHub Repository

When playing a live stream with a EXT-X-SERVER-CONTROL tag containing HOLD-BACK and PART-HOLD-BACK values that dynamically update faster than the player’s garbage collection cycle, Shaka Player enters a state where the manifest’s partial segment list grows without bound. Eventually, the JavaScript engine’s call stack or heap limit is exceeded, throwing a native RangeError or InternalError . Shaka’s error translation layer maps this uncaught native exception to a default code: 6001 .