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Aria (from Latin aria meaning “playground”) is a simple video preview tool that has a bit of a control of the stream quality, both on-camera (via UVC) and on-GPU (via EVR's “filters”) with a few additional functions that were used during development of on-chip ISP functions.

One day I may write a manual for it (once I find out what does the phrase “spare time” mean). For now the only feature I'm going to mention is this: you can zoom and pan the video with mouse's wheel and button'ed drag actions.