HRESULT 0xC00D3EA3 (MF_E_VIDEO_RECORDING_DEVICE

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The active video capture device has been preempted rather than physically removed.

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MF_E_VIDEO_RECORDING_DEVICE_INVALIDATED	MF_E_NETWORK_RESOURCE_FAILURE

MF_E_VIDEO_RECORDING_DEVICE_PREEMPTED

MF_E_VIDEO_RECORDING_DEVICE_PREEMPTED must be distinguished from device removal. Media Foundation exposes separate capture events: MEVideoCaptureDevicePreempted for preemption and MEVideoCaptureDeviceRemoved for removal.

Keep preemption as a separate capture state

Record the Media Foundation event type and event status before tearing down the capture pipeline. A generic “camera lost” log discards the distinction that the platform provides.
Keep the selected video's symbolic link so the application can identify the same capture device when it reevaluates available devices.
Do not diagnose preemption as a broken USB cable solely because frames stopped. Check whether the platform reported MEVideoCaptureDevicePreempted and whether the device still appears in MFEnumDeviceSources.

A removed device is handled through device-loss notification and symbolic-link comparison. Preemption is a separate Media Foundation event state, so recovery policy can be different even when both conditions interrupt recording. The most useful traces include the active device symbolic link, the last sample timestamp, the event type/status, and a fresh enumeration result. Recreating encoders or changing the capture format does not explain why the platform explicitly reported preemption.

Microsoft: Media Foundation capture events · Microsoft: video device loss · Microsoft: MFEnumDeviceSources

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