The list of SVP parameters

Please read Advanced SVP settings section from the User Manual first.

The list

Work in progress!

Option	Default	Description	Is accessible from UI
frc
frc.color
frc.color.limit_10bit	72	Allow 10-bit output in supported video players (mpv, libmpv-based, VLC) from 10-bit sources, or force conversion to YUV 4:2:0 8-bit format. 0 - Never 72 - Up to 4K @72 fps 100 - Up to 4K @100 fps 1000 - Always	App. settings -> Add. options -> Allow output in 10 bit color depth
frc.frame
frc.frame.align	8	Align (crop) video frame width to the multiple of this value	No
frc.frame.autocrop	true	Attempt to cut off black bars from the video	Video frame -> Detect and cut off black bars
frc.frame.autocrop_tracking	true	Continiously monitor the black bars width (cause it changes in some releases, e.g. IMAX).	"Frame size" tab, long-click on the "Black bars detection" button
frc.frame.crop	0.0	Frame cropping. 0 - turned off from 10.0 to 100.0 - crop to the screen AR by XX%, e.g.: 100.0 - to the screen AR, 50.0 - to the screen AR by 50% from 0.0 to 10.0 - crop to this AR value, e.g. 2.4 - crop to 2.40:1	"Video frame" menu, "Frame size" tab
frc.frame.resize	0	Change frame size (after cropping). 0 - turned off -1 - decrease to screen size (if larger) -WWWWHHHH - decrease to fit into WWWWxHHHH rectangle (if larger), e.g. -12800720 means "fit into 1280x720 rect" 1 - resize to screen size (even if frame is smaller) WWWWHHHH - resize to either WWWW width or HHHH height (even if frame is smaller)	"Video frame" menu, "Frame size" tab
frc.frame.valign	2	Same as frc.frame.align but for the frame height.	No
frc.gpu	1	Internal ID of the GPU device to use for the FRC computations. Zero means "CPU only".	App.settings -> GPU acceleration
frc.lights
frc.lights.disabled_in_3d	true	Don't turn it on in 3D modes	Outer lighting -> Disabled in 3D
frc.lights.fullscreen	true	Turn on only when the video player is in full screen mode	Outer lighting -> Enabled in full screen only
frc.lights.fullscreen_delay	1500	Delay, in ms, to re-init lighting after full screen state changed to on or off	No
frc.lights.glow_amount	10	Width of the glow border in per cents of the frame width	No
frc.lights.light_type	1	* 0 - outer lighting off 1 - fill only black bars, either horizontal or vertical 2 - "glow light" from all four sides of the frame	"Outer lighting" menu
frc.lights.max_ratio	2.0	Maximum resulting frame AR value	No
frc.lights.min_ar_diff	0.015	Don't turn on lighting if difference between frame AR and screen AR is less than this value	No
frc.prefetch
frc.prefetch.ff_add frc.prefetch.ff_mul	4 1.0	How many pre-decoded frames request in ffdshow buffers = <number of threads>*ff_mul + ff_add. Low values may lead to video stuttering.	No
frc.prefetch.mpv_add	0	How many pre-decoded frames request in mpv buffers = <number of threads>*4 + mpv_add.	No
frc.target
frc.target.max	47.0	Maximal source frame rate that (probably) will be interpolated to higher rates	No
frc.target.tolerance	0.020	Acceptable relative difference between screen refresh rate and target rate for the FRC engine. High values may hurt performance!	No
frc.threads	0	Number of computation threads. Higher numbers will give better CPU utilization in exchange for increased memory consumption. Zero means "auto".	App. settings -> Add. options -> Processing threads
main
main.api
main.api.on	0	Turn on HTTP server for the remote control	"Control options" tab, "External control via HTTP"
main.api.port	9901	TCP port to listen on	No
main.blacklist	a few entries	A list of video players for which SVP will be completely off or with limited functionality	"Control options" tab
main.extensions
main.extensions.svplight main.extensions.svptube	1	Turn on or off various extensions	App.settings -> Add.options -> Extensions
main.language	<system-language>	User interface language. If there's no known translation for some text string it'll remain in English.	"Language" menu
main.osd
main.osd.delay	3000		No
main.osd.fontScale	1.0		No
main.osd.on	true		App.settings -> Show OSD messages
main.performance		Measured system performance.	No
main.performance.base		Measured multithreaded CPU performance, this value is used for the automatic profile options selection algorithm.	No

and more...

User defined option example

This allows you to add a script variable controlled from either main SVP menu or video profile (may require some JavaScript knowledge).

Pro version only!

Example task: add missing Drop every other frame option.

• Add new user defined options called "Drop every other frame", exposed to the script as "drop_odd_frames", within "FRC profile" scope, that cat be either ON of OFF:

• Note the new option added to the list:

• ... and to the video profile:

• Open SVP 4\script\generate.js with a plain text editor. Luckily for us there's already a placeholder for "drop every other frame function": find the code block containing "SelectEvery()" Avisynth function call and modify it as follows:

if(profile.drop_odd_frames) //note the variable name here!
{
    smooth.rate.num*=2;
    AVS.push("SelectEvery(2,0)");
    AVS.push("");
}

• Save modified .js file (this may require administrative privileges), in SVP's Events log note that SVP caught the change:

20:51:00.201 [I]: Script: script file changed C:\Program Files (x86)\SVP 4\script\generate.js

• And that's it! Now you can turn it on or off via the video profile.