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Identifies statistics that the Media Engine tracks during playback. To get a playback statistic from the Media Engine, call IMFMediaEngineEx::GetStatistics.
In the descriptions that follow, the data type and value-type tag for the PROPVARIANT are listed in parentheses.
Syntax
typedef enum MF_MEDIA_ENGINE_STATISTIC {
MF_MEDIA_ENGINE_STATISTIC_FRAMES_RENDERED = 0,
MF_MEDIA_ENGINE_STATISTIC_FRAMES_DROPPED = 1,
MF_MEDIA_ENGINE_STATISTIC_BYTES_DOWNLOADED = 2,
MF_MEDIA_ENGINE_STATISTIC_BUFFER_PROGRESS = 3,
MF_MEDIA_ENGINE_STATISTIC_FRAMES_PER_SECOND = 4,
MF_MEDIA_ENGINE_STATISTIC_PLAYBACK_JITTER = 5,
MF_MEDIA_ENGINE_STATISTIC_FRAMES_CORRUPTED = 6,
MF_MEDIA_ENGINE_STATISTIC_TOTAL_FRAME_DELAY = 7
} ;
Constants
MF_MEDIA_ENGINE_STATISTIC_FRAMES_RENDERED Value: 0 The number of rendered video frames. (ULONG, VT_UI4) |
MF_MEDIA_ENGINE_STATISTIC_FRAMES_DROPPED Value: 1 The number of dropped video frames. (ULONG, VT_UI4) |
MF_MEDIA_ENGINE_STATISTIC_BYTES_DOWNLOADED Value: 2 The number of bytes that have been downloaded since the last HTTP range request. (ULARGE_INTEGER, VT_UI8). |
MF_MEDIA_ENGINE_STATISTIC_BUFFER_PROGRESS Value: 3 The percentage of the playout buffer filled during buffering. The value is an integer in the range 0–100. (LONG, VT_I4) |
MF_MEDIA_ENGINE_STATISTIC_FRAMES_PER_SECOND Value: 4 The frames per second. (FLOAT, VT_R4) |
MF_MEDIA_ENGINE_STATISTIC_PLAYBACK_JITTER Value: 5 The amount of playback jitter. (DOUBLE, VT_R8) Supported in Windows 8.1 and later. |
MF_MEDIA_ENGINE_STATISTIC_FRAMES_CORRUPTED Value: 6 The number of corrupted frames. (ULONG, VT_UI4) Supported in Windows 8.1 and later. |
MF_MEDIA_ENGINE_STATISTIC_TOTAL_FRAME_DELAY Value: 7 The total amount of frame delay. (DOUBLE, VT_R8) Supported in Windows 8.1 and later. |
Requirements
Requirement | Value |
---|---|
Minimum supported client | Windows 8 [desktop apps | UWP apps] |
Minimum supported server | Windows Server 2012 [desktop apps | UWP apps] |
Header | mfmediaengine.h |