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MF_E_RT_OUTOFMEMORY
Locate the failing boundary
MF_E_RT_OUTOFMEMORY (0xC00D36F7) is a failure result from Windows Media Foundation. The generated section above already contains the platform message; the useful extra information is that this result isolates the real-time media path exhausted the memory budget or pool reserved for time-sensitive processing.
The producer is the real-time work queue, allocator, or hardware pipeline rather than ordinary process heap allocation, so diagnosis should begin with that object and its state rather than with a broad reinstall or an unrelated codec change. A representative occurrence is a video path retains surfaces across callbacks until the real-time allocator cannot satisfy the next sample request.
Read the call sequence as a timeline. First, the application reaches the real-time work queue, allocator, or hardware pipeline rather than ordinary process heap allocation. Next, the component evaluates the real-time media path exhausted the memory budget or pool reserved for time-sensitive processing. Only after the MF_E_RT_OUTOFMEMORY checkpoint can a wrapper, user interface, or fallback path emit a less specific message.
Evidence that survives retries
- Exact request: method name, all identifiers, units, flags, stream number, requested action, and
MF_E_RT_OUTOFMEMORY. - Object state: sample counts, buffer sizes, outstanding references, allocator limits, queue depth, frame dimensions, and the point where samples stop being released.
- Correlation for
MF_E_RT_OUTOFMEMORY: callback cookie, object generation, URL or file identity, device identity, and timestamps from the same attempt. - Underlying cause: the first Win32, COM, network, driver, policy, or component error reported before
0xC00D36F7.
A controlled verification sequence
Use one controlled experiment: reduce queue depth or frame size in one controlled run and verify that sample references return to the allocator. A useful MF_E_RT_OUTOFMEMORY comparison changes exactly that variable; changing content, account, proxy, device, components, and version together makes attribution impossible.
| Outcome | Interpretation |
|---|---|
| The same checkpoint now succeeds | The changed condition belongs to the producing boundary for MF_E_RT_OUTOFMEMORY. |
| A more specific earlier HRESULT appears | Preserve it; MF_E_RT_OUTOFMEMORY was probably a wrapper or terminal state. |
| The operation advances and fails later | The MF_E_RT_OUTOFMEMORY condition is fixed even though the complete workflow still has another defect. |
| No behavior changes | Restore the MF_E_RT_OUTOFMEMORY baseline and test another documented prerequisite instead of stacking workarounds. |
Nearby results that mean something else
| Related code | Why it is not interchangeable |
|---|---|
MF_E_NO_BITPUMP | Internal; Bitpump not found; compare this boundary specifically with MF_E_RT_OUTOFMEMORY. |
MF_E_MEDIAPROC_WRONGSTATE | MediaProc is in the wrong state; compare this boundary specifically with MF_E_RT_OUTOFMEMORY. |
MF_E_FORMAT_CHANGE_NOT_SUPPORTED | The data specified for the media type is supported, but would require a format change, which is not supported by this object; compare this boundary specifically with MF_E_RT_OUTOFMEMORY. |
The important distinction is this: E_OUTOFMEMORY can describe general allocation failure, while this code points to Media Foundation real-time resources. For MF_E_RT_OUTOFMEMORY, searching only for the visible English message collapses different states; the constant and 0xC00D36F7 retain the boundary.
Repair at the owning layer
Apply the narrow remedy: release retained samples, bound queues, and configure realistic allocator capacity; adding unrelated virtual memory may not fix a real-time pool. Then discard stale media objects, pending callbacks, cached provider sessions, or installer state as appropriate and rerun the exact request that originally returned MF_E_RT_OUTOFMEMORY.
A confirmed MF_E_RT_OUTOFMEMORY repair produces the requested stream, attribute, state transition, license decision, store callback, or setup result. Suppressing MF_E_RT_OUTOFMEMORY, broadly enabling legacy controls, or falling back to unrelated content is not proof of repair.
References
- Media Foundation architecture — reference used for the
MF_E_RT_OUTOFMEMORYcheckpoint. - Media Foundation error codes — reference used for the
MF_E_RT_OUTOFMEMORYcheckpoint. - Media samples — reference used for the
MF_E_RT_OUTOFMEMORYcheckpoint. - IMFVideoSampleAllocator interface — reference used for the
MF_E_RT_OUTOFMEMORYcheckpoint.
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