Shaka Error 6001 -

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 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. shaka error 6001

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 . This creates a circular reference in the segment