size reduction factor

size reduction factor

Reduction size factor applied to the original size of the video.

• 1: no size reduction
• 3/4: reduction by 3/4
• etc.

This is useful to

• reduce the size of video and therefore reduce the CPU consumption of video filters,
• fit to the output display resolution.

This can reduce efficiently the number of pixels to process in the video flow and then reduce the CPU load of video effects.

A 1920 × 1080 (2073600 pixels per frame) video with a size factor of 2/3 gives a 1280 x 720 resolution (921600 pixel per frame) so the CPU load will be reduced by 50%.

fit aspect ratio to setup out format

Determines if the aspect ration must follow the settings of setup-panel-tab-video out format or not. When ON the image aspect ratio is adapted to the setup setting aspect ratio. When OFF the setup setting is ignored and the aspect ration is not changed.

width

Video resolution width (once reduction factor applied).

height

Video resolution height (once reduction factor applied).