Lost Signal VHS

Lost Signal VHS is a lightweight post-processing shader pack for Minecraft Java Edition. It keeps vanilla lighting intact while turning the final image into unstable analog found footage recorded and played back through a damaged VHS deck.

Backrooms & analog horror

Lost Signal VHS is designed for Backrooms maps, liminal spaces, horror modpacks, ARGs, machinima, and found-footage videos. The included Backrooms preset emphasizes sickly color, unstable exposure, deep tape noise, tracking loss, and damaged-camcorder motion while keeping the scene playable.

▶ Backrooms VHS trailer: https://youtu.be/MWtnxr5Iu6Q

What's new in v1.2 Universal

• True NTSC/PAL interlaced field weaving through a persistent history buffer
• Smooth correlated time-base error instead of rectangular digital glitches
• Feathered tracking tears, helical-track distortion, head-switch noise, and RF dropouts
• Tape noise, frame jitter, and instability synchronized to the analog field rate rather than game FPS
• Selectable NTSC and PAL signal standards
• Performance, Balanced, and Cinematic quality levels
• Separate temporal-history stabilization and spatial echo controls
• Expanded English and Russian settings localization

Core features

• Horizontal scanlines, tape grain, flicker, static bursts, and chroma noise
• Color bleeding, YIQ processing, phase wobble, RGB separation, and color loss during bad tracking
• Temporal ghosting, motion combing, exposure pumping, sync failures, and vertical roll
• Camcorder lens distortion, frame jitter, rounded overscan, 4:3 playback framing, and optional VCR OSD
• Six configurable presets plus detailed individual controls
• Overworld, Nether, and End support without dimension-specific shaders

Supported Minecraft versions

Minecraft Java	Recommended Iris/Sodium setup	Status
26.2	Iris 1.11.2 + Sodium, OpenGL	Supported
26.1.2	Iris 1.11.2 + Sodium, OpenGL	Supported
1.21.11	Iris 1.10.7 + Sodium	Supported
1.21.4	Iris 1.8.8 + Sodium	Supported
1.21.1	Iris 1.8.12 + Sodium	Supported
1.20.1	Iris 1.7.6 + Sodium	Supported

Minecraft 26.2 must use the OpenGL graphics backend. Iris is not compatible with the experimental Vulkan backend.

The pack also follows the standard OptiFine shader-pack layout, but Iris is the primary tested platform. No resource pack, external texture, or compute-shader support is required.

Installation

1. Download the Lost Signal VHS v1.2 Universal ZIP.
2. Place it in Minecraft's shaderpacks directory.
3. Start a supported Minecraft/Iris profile using OpenGL.
4. Open Options → Video Settings → Shader Packs.
5. Select Lost Signal VHS v1.2 Universal and apply it.
6. Open Shader Pack Settings to select a preset, quality level, and NTSC/PAL mode.

Licensed under the MIT License.