Custom Scaling – HDfury Vertex glossary
Set output resolution, colour space and bit depth yourself, per output, instead of letting the Vertex decide.
Custom scaling means you decide the picture format the Vertex sends out, instead of letting it choose.
You set the resolution, the colour format and the number of colour shades yourself, for each output.
It is like setting a camera to manual instead of automatic.
Can I set a fixed output format with HDfury Vertex custom scaling?
YESYes. With Custom Scaling you set resolution, colour space and deep colour yourself for the upscale and downscale outputs. Do not use it for standard Dolby Vision: changing its RGB 8-bit container breaks DV.
How to use it with the Vertex:
- Set the SCALE slide switch to the middle, Custom Scaling/GUI (p.12).
- USB GUI > SCALER > Custom Scaling: choose resolution, colour space and deep colour per output (p.30).
- RS232: #set scale custom (p.49); IR: vertex_scalecustom (p.86).
- For Dolby Vision, use No Scaling instead (p.113).
What it is
Custom scaling means you choose the output format rules yourself rather than using automatic detection. It is useful when a display reports its capabilities badly, or when you want a fixed format.
On the Vertex
The Scale slide switch has three positions: No Scaling/Passthru (untouched), Custom Scaling/GUI and Auto Scaling (p.12). Custom Scaling uses rules you define and can be changed via Bluetooth, IR, RS232 or USB (p.12).
In the SCALER page you choose resolution, colour space and deep colour for the upscale and downscale output ports (p.30). Colour space: Follow Input (default), RGB FULL, RGB BT2020, 4:4:4 BT.709, 4:4:4 BT2020, 4:2:2 BT.709, 4:2:2 BT2020, 4:2:0 BT.709, 4:2:0 BT2020. Deep colour: Follow Input (default), 8-bit/24-bit, 10-bit/30-bit, 12-bit/36-bit, 16-bit/48-bit (p.30).
The GUI names the options Downscale, Thru and Up (p.26). The Pro Tips add that any 4:2:2 signal is always processed at 12b (p.113). RS232: #set scale custom (p.49); IR: vertex_scalecustom (p.86).
Common questions
When should I use custom scaling instead of auto or passthrough?
Use No Scaling for the untouched signal, Auto Scaling when the Vertex should match each display, and Custom Scaling when a display needs one fixed format (p.12).
Should I use custom scaling for Dolby Vision?
No. Standard Dolby Vision travels in an RGB 8-bit container, so changing colour space or bit depth breaks it (p.113). Use No Scaling for DV.