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NF:vfw.capPreviewRate |
capPreviewRate macro (vfw.h) |
The capPreviewRate macro sets the frame display rate in preview mode. You can use this macro or explicitly call the WM_CAP_SET_PREVIEWRATE message. |
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multimedia\cappreviewrate.htm |
Multimedia |
72d885cb-5a48-4403-a668-c3c437405317 |
12/05/2018 |
_win32_capPreviewRate, capPreviewRate, capPreviewRate macro [Windows Multimedia], multimedia.cappreviewrate, vfw/capPreviewRate |
vfw.h |
Windows |
Windows 2000 Professional [desktop apps only] |
Windows 2000 Server [desktop apps only] |
Windows |
19H1 |
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The capPreviewRate macro sets the frame display rate in preview mode. You can use this macro or explicitly call the WM_CAP_SET_PREVIEWRATE message.
Handle to a capture window.
Rate, in milliseconds, at which new frames are captured and displayed.
The preview mode uses substantial CPU resources. Applications can disable preview or lower the preview rate when another application has the focus. During streaming video capture, the previewing task is lower priority than writing frames to disk, and preview frames are displayed only if no other buffers are available for writing.