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vhs

type: "vhs"

Worn VHS playback: wobble, a crawling noise tracking band, colour bleed and washed contrast.

Fields

Every screen effect also accepts screen_layer and the shared definition fields (duration, easing, loop, persistent, fade_ticks, sound).

Field Type Default Meaning
tracking float 0.35 Tracking band horizontal jumps (0..1)
band_height float 0.08 Noise band height, screen-height fractions
band_speed float 0.15 Band travel speed, screen-heights per second
bleed float 0.02 Chroma smear to the right, screen-width fractions (0..0.1)
wobble float 0.004 Fine constant horizontal jitter (0..0.05)
intensity float 1 (fades to 0) Master strength (0..1)

Example

{
    "type": "vhs",
    "duration": 60,
    "params": { "tracking": 0.35, "band_height": 0.08, "band_speed": 0.15, "bleed": 0.02, "wobble": 0.004, "intensity": 1 }
}

/vfx play vfxweaver:vhs {[band_speed:0.3]}

Code

/vfx play vfx_demos:show_vhs

Its datapack definition:

{
    "type": "vhs",
    "duration": 200,
    "easing": "ease_in_out_cubic",
    "persistent": true,
    "loop": true,
    "fade_ticks": 12,
    "params": {
        "tracking": 0.2,
        "band_height": 0.05,
        "band_speed": 0.08,
        "bleed": 0.012,
        "wobble": 0.002,
        "intensity": {
            "keyframes": [
                {
                    "time": 0,
                    "value": 0.4
                },
                {
                    "time": 100,
                    "value": 0.9
                },
                {
                    "time": 200,
                    "value": 0.4
                }
            ]
        }
    }
}