- Posts: 1
- Joined: Tue Dec 01, 2020 1:32 pm
- Real Name: Jeff Bowman
Hi Jeff,
The SDK provided screen preview helpers such as IDeckLinkGLScreenPreviewHelper and IDeckLinkDX9ScreenPreviewHelper are intended for small window preview operations with the lowest possible performance impact. These preview helpers render the preview at 1/2 height, 1/4 height for 4K and 1/8 height for 8K by skipping lines. You can see code sample of these screen preview helpers in CapturePreview SDK Sample.
Applications that require full-screen rendering should implement their own rendering functionality. Generate a class that implements IDeckLinkScreenPreviewCallback and receive preview frames in the IDeckLinkScreenPreviewCallback::DrawFrame callback.
Regards
Cameron