Issues

Issues

• Initialization Segment Received step 8 should be nested in step 7

  w3c/media-source#380 · opened on Sep 30, 2026

• Detaching from a media element doesn’t abort the buffer append algorithm — so an append queued beforehand still runs, against a reset media element

  w3c/media-source#378 · opened on Aug 3, 2026

• Empty edit (elst media_time = -1) handling under MSE diverges across engines and from non-MSE playback

  w3c/media-source#377 · opened on Jul 23, 2026
  8

• Coded Frame Processing is unspecified when incoming coded frame's presentation timestamp coincides with an existing frame's

  w3c/media-source#375 · opened on May 13, 2026
  1

• Coded Frame Processing does not remove "SAP Type 2" decode-shadowed orphans (closes #187)

  w3c/media-source#374 · opened on May 13, 2026
  1

• Interop issues when an append overlaps currentTime

  w3c/media-source#373 · opened on May 12, 2026

• Support MediaSource in SharedWorker

  w3c/media-source#371 · opened on Jan 18, 2026
  2

• BufferedChangeEvent members should be nullable

  w3c/media-source#370 · opened on Jan 10, 2026 · V2
  4

• Model seekable range for a MediaSource with finite duration

  w3c/media-source#369 · opened on Oct 24, 2025

• Clarification on returning to selection algorithm from end-of-stream

  w3c/media-source#365 · opened on Apr 16, 2025
  1

• Clarification on removeSourceBuffer

  w3c/media-source#364 · opened on Mar 25, 2025 · V2
  2

• Accidental trimming of overlapping text cues

  w3c/media-source#363 · opened on Mar 10, 2025
  1

• Multiple attachable/detachable SourceBuffers

  w3c/media-source#360 · opened on Jan 8, 2025
  3

• Dynamic addition/removal of SourceBuffers

  w3c/media-source#359 · opened on Jan 8, 2025
  5

• Support timed text in MSE

  w3c/media-source#358 · opened on Sep 27, 2024

• Proposal: Have a detachable MediaSource object

  w3c/media-source#357 · opened on Sep 19, 2024
  5

• Horizontal reviews

  w3c/media-source#356 · opened on Aug 27, 2024

• Deprecate isTypeSupported in favor of Media Capabilities

  w3c/media-source#355 · opened on Jul 4, 2024
  2

• No handling for when the MediaSource constructed in a DedicatedWorkerGlobalScope goes out of scope

  w3c/media-source#348 · opened on Feb 18, 2024

• Specify constructor for MediaSource, ManagedMediaSource, BufferedChangeEvent

  w3c/media-source#345 · opened on Dec 20, 2023 · V2

• Describe eviction policy

  w3c/media-source#341 · opened on Dec 5, 2023
  1

• HTMLMediaElement Extensions missing WebIDL?

  w3c/media-source#338 · opened on Nov 14, 2023
  1

• Editorial: bullet numbering skips over numbers and renders poorly, needs rework to comply with [Infra] #algorithm-conditional-statements

  w3c/media-source#334 · opened on Nov 8, 2023
  1

• Redundancies, duplications, and general spec health

  w3c/media-source#325 · opened on Oct 17, 2023
  7

• Move extensions to HTML to HTML spec

  w3c/media-source#324 · opened on Oct 17, 2023