Implementation of AgX for OBS as a script.

This is mainly intended to be applied on live camera feeds as this would have not much benefit to apply this on desktop captures.

bottom image has the AgX filter applied in OBS, top is default rendering -- standard C922 webcam

• This has been developed on OBS 28.1.2 for Windows but should work for lower version and other operating systems.

• Nothing more than the content of this directory.

Put the whole content of the obs-script directory anywhere you want.

1. Open OBS
2. In the top menu > Tools > Scripts
3. Click on the + button, and browse to the location of the obs-script/AgX.lua file.

The script is now active. A new filter has been created :

1. Go to your Scene/Source where you want to add the AgX filter and select it (the source)
2. Click on the Filters button that should be a bit above the source.
3. In the Effect Filters section, click the + button and choose AgX

All done ! You can now configure it.

Note Reminder that AgX being a display transform it should be put at the very end of the image processing chain. (so at the bottom in OBS)

The camera/video-source and your lighting setup will affect how much you need to tweak the paramaters. There is no setup that work for all cases (but once you configured for your camera/ usual lighting you will not need to touch it anymore)

I recommend to always start by :

• boosting the Grading Exposure by +1.0 stop.
• boosting Highligh Gain by 2.0

Pick in which colorspace your source is encoded.

Passthrough means the no decoding is applied.

Target colorspace encoding. Must correspond to your monitor calibration.

Adjust imagery look in a Linear space, before AgX is applied.

Exposure in stops. 0.0 = neutral.

Power function. 1.0 = neutral.

Saturation based on BT.709 coeff. 1.0 = neutral.

Only boost the brightest part of the image. The range of those brightests part can be adjusted via Highlight Gain Threshold.

0.0 = neutral.

See above.

Grading modifications applied after AgX on display encoded data. This will introduce skews, clipping and other artefact.

Recommended to change small values if used.

Switch to use the HLSL transform being an exact match to the OCIO log2Transform.

Does not create any change visually.

Not originally included in the first AgX version but should be in the future. Restore chroma and avoid having to use Punchy saturation.