What does HRESULT 0x000D104F (NS_S_WMG_FORCE_DROP_FRAME) mean?

 
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NS_S_WMP_LOADED_JPG_IMAGE NS_S_WMR_ALREADYRENDERED

NS_S_WMG_FORCE_DROP_FRAME

Windows Media pipeline requires the current frame to be dropped

NS_S_WMG_FORCE_DROP_FRAME is HRESULT 856143 (0x000D104F) from Windows Media. The documented description is “Drop this frame.” The severity bit indicates a nonfailure result, but the value carries a specific condition that must not be collapsed into plain S_OK.

In the legacy Windows Media pipeline or Player state, this result means that drop this frame. It is actionable success information: the result must be interpreted before the caller advances its workflow.

Where the status is encountered

  • Windows Media source, reader, writer, or renderer callbacks; log the exact method and object state instead of interpreting the constant outside that contract.
  • Windows Media Player SDK automation; log the exact method and object state instead of interpreting the constant outside that contract.
  • Media graph, playlist, image, rights, or buffering state; log the exact method and object state instead of interpreting the constant outside that contract.

Evidence to preserve

  • Preserve stream and frame identifier.
  • Preserve presentation timestamp and deadline.
  • Preserve current render position.
  • Preserve frame type.
  • Preserve cumulative forced-drop rate.

What must be true before accepting it

Verify that dropping this frame preserves timeline progress better than rendering it late and the loss is visible in quality telemetry. A valid return path and an application-level completed request are not automatically the same thing.

Determine whether ownership, buffers, callbacks, or resources changed before choosing recovery.

Correct handling and recovery

Discard the designated frame, advance timestamps correctly, and measure drop rate. Trigger adaptation when forced drops exceed the acceptable threshold.

Difference from nearby results

Practical scenario

A live preview falls behind its render deadline. The graph drops one predicted frame, keeps audio synchronized, and records the event.

References


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