Add a Scale option (1.0 native, 0.5 half, etc.) that downsamples the
captured BGRA frame with bilinear interpolation before JPEG encoding.
Config carries the scale factor; the GUI exposes a Scale dropdown
(100%/75%/50%/25%) that applies live via SetConfig.
Verified: OBS displays the image at the reduced resolution matching the
selected scale, without restarting the stream.
petere
aab2006e78