Viewerframe Mode Refresh Work

In "Refresh" mode—often the default for inspection tools, CAD software, and medical imaging—the system idles. The refresh work is zero until a specific trigger occurs. The efficiency of this mode relies on the principle: the system calculates precisely which pixels have changed (the "dirty" area) and refreshes only that subset of the frame buffer.

: Older browsers or specific mobile environments often struggle to render modern video codecs like H.264 or MJPEG natively. Refresh mode uses standard JPEG images, which every browser can display. viewerframe mode refresh work

In "Motion" mode, the viewer operates on a tight loop, often synchronized with the vertical blanking interval (VSync) of the monitor. The refresh work here is constant; the frame buffer is cleared and redrawn at the refresh rate of the display (e.g., 60Hz or 120Hz). This is computationally expensive but necessary for smooth animation. In "Refresh" mode—often the default for inspection tools,