References ▼
Assigns the media playback rate.
#include "ltmf.h"
| Language | Syntax |
|---|---|
| C | HRESULT IltmfPlay_put_Rate(pPlay, newVal) |
| C++ | HRESULT put_Rate(newVal) |
Pointer to an IltmfPlay interface.
Playback rate. Must not be zero.
| Value | Meaning |
|---|---|
| S_OK | The function was successful. |
| <> S_OK | An error occurred. Refer to the Error Codes or the HRESULT error codes in the MediaFoundation documentation. |
The playback rate is expressed as a ratio of the normal speed. Thus, 1.0 is normal playback speed, 0.5 is half speed, and 2.0 are twice speed. For audio streams, changing the rate also changes the pitch.
Win32, x64.
For a C++ example, refer to the Simple Media Player for C++.
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