Lost Signal VHS v1.8.1 — Critical Packaging Hotfix

Lost Signal VHS v1.8.1 — Critical Packaging Hotfix

This release fixes the invalid ZIP structure in v1.7 and v1.8. Those archives stored shader paths with Windows backslashes, so Iris could not discover the required shaders/ directory and rejected the pack as invalid.

Fixed

• rebuilt every archive entry with standard portable / paths
• added explicit directory entries so Java ZipFS and Iris see shaders/
• added deterministic release validation for shader entry points, geometry fallback programs, localization files, unsafe paths, and invalid separators
• retained every v1.8 Analog Fog feature and preset without shader-code changes

Verified

• Minecraft 26.2
• Fabric Loader 0.19.3
• Iris 1.11.2 + Sodium 0.9.1
• NVIDIA RTX 5070, OpenGL 3.3, driver 596.49
• Iris selected the pack, created the Overworld pipeline, and reloaded the Analog Fog profile with no shader compile/link errors

Established primary targets: 1.20.1, 1.21.1, 1.21.4, 1.21.11, 26.1.2, 26.2.

Extended compatibility targets: 1.18.2, 1.19.4, 1.20.4, 1.20.6, 1.21.5, 1.21.8, 1.21.10. These use the same conservative GLSL interfaces but have not all been live-tested across every loader/GPU/driver combination.

Minecraft 26.x requires Iris with OpenGL; do not use the experimental Vulkan backend.

SHA-256: B2F9FF25C701CFAED3A822DBDC2D2A3B4B7F51AC938B19AD715C75F18C35A4E3

v1.7 and v1.8 are superseded because their downloadable ZIPs are invalid in Iris. Please use v1.8.1.

[Superseded] Lost Signal VHS v1.8 — Analog Fog

Warning

This release ZIP was packaged with Windows-style internal paths and may be rejected as invalid by Iris. Download the fixed v1.8.1 release instead.

Lost Signal VHS v1.8 — Analog Fog

The atmosphere now belongs to the recorded world instead of being a clean overlay. Scene-depth fog enters the signal before YIQ conversion, composite decoding, temporal history, and tape wear, so distant air naturally develops chroma bleed, ghosting, interlacing, and analog noise.

New

• Depth-based atmospheric fog with neutral, Backrooms, Poolrooms, and Liminal Night palettes
• Adjustable density, clear start distance, falloff distance, and world-anchored variation
• New Analog Fog preset
• Fog tuning added to Backrooms, Poolrooms, and Liminal Night
• Conservative clear fallback for the first-person hand and depth-disagreeing translucent geometry
• Extended compatibility target for Minecraft Java 1.18.2, 1.19.4, 1.20.4, 1.20.6, 1.21.5, 1.21.8, and 1.21.10, alongside the existing 1.20.1, 1.21.1, 1.21.4, 1.21.11, 26.1.2, and 26.2 targets

Installation

Put Lost_Signal_VHS_v1.8_Analog_Fog.zip directly into .minecraft/shaderpacks, start Minecraft with Iris, and select the pack. Use the OpenGL backend on Minecraft 26.x.

Integrity

SHA-256: B370BAB2C532185267175F8787968B1346734F987DD629E3E1ACB42F1410CC81

Extended targets share the same conservative GLSL 1.20 and Iris depth/composite interfaces. Live verification is still recommended for every loader and graphics-driver combination.

[Superseded] Lost Signal VHS v1.7 — Composite Decode

Warning

This release ZIP was packaged with Windows-style internal paths and may be rejected as invalid by Iris. Download the fixed v1.8.1 release instead.

Lost Signal VHS v1.7 — Composite Decode

A major realism update focused on the way real VHS and composite video signals behave.

Highlights

• Motion-aware temporal history using depth and camera-matrix reprojection
• Consumer notch and two-line comb decoder modes
• Dot crawl, cross-color, and cross-luma artifacts
• Persistent tape defects tied to virtual tape motion
• New Composite Decode preset
• Updated English and Russian settings and documentation
• Important compatibility improvements for modern Minecraft rendering

Supported Minecraft versions

Designed for Minecraft Java 26.2, 26.1.2, 1.21.11, 1.21.4, 1.21.1, and 1.20.1 with Iris. The shader pack also keeps the standard OptiFine-compatible folder layout. For Minecraft 26.2, use the OpenGL renderer.

Installation

Download the ZIP below and place it directly in the Minecraft shaderpacks folder. Do not unpack it.

Verification

SHA-256: 76D13ACE5145068DD2291439BEE9E796B0FFF0C3A4A0BA0D31DC045C72B7819B

Static GLSL validation, settings/localization checks, and byte-for-byte archive verification passed. Live testing on each supported game/loader combination is still recommended.

Lost Signal VHS v1.6.1 — Minecraft 26.2 Framebuffer Fix

Critical Minecraft 26.2 compatibility fix

Lost Signal VHS v1.6.1 fixes the corrupted blue/white world image that appeared
when the shader was enabled on Minecraft 26.2 with Iris 1.11.2.

What changed

• Added explicit lightweight geometry passes so Iris always supplies the real
  vanilla-lit scene to the VHS post-processing pipeline.
• Made the temporal framebuffer read/write flips explicit.
• Preserved all v1.6 effects, profiles, and controls.
• Includes the completed roadmap: Liminal Signal, tape generations, period
  camcorders, and broken-signal simulation.

Compatibility

• Minecraft Java Edition 26.2 / 26.1.2 with Iris 1.11.2 and Sodium
• Minecraft Java Edition 1.21.11, 1.21.4, 1.21.1, and 1.20.1 with compatible Iris
• OpenGL graphics backend required; Iris does not support Minecraft 26.2 Vulkan

Users on Minecraft 26.2 should update from v1.6 to v1.6.1 immediately.

Verification

Tested in a live Minecraft 26.2 world with Iris 1.11.2 and Sodium 0.9.1. Shader
toggle off/on, alpha-tested foliage, the temporal history buffer, and the full
VHS pipeline all render correctly without shader compilation or OpenGL errors.

SHA-256:
BDB21DAAC6EB9CFEB70DDB029F1E48C5ADDDB5F72200F6BE5EA590ABE364397F

Lost Signal VHS v1.2 Universal

Lost Signal VHS v1.2 Universal

One installable shader pack for the current and most popular supported Minecraft Java releases.

Backrooms and analog horror

Built for Backrooms maps, liminal spaces, horror modpacks, ARGs, machinima, and found-footage videos. The dedicated Backrooms preset emphasizes sickly fluorescent color, unstable exposure, deep tape noise, tracking loss, and damaged-camcorder motion.

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

Supported versions

• Minecraft Java 26.2 — Iris 1.11.2 + Sodium, OpenGL
• Minecraft Java 26.1.2 — Iris 1.11.2 + Sodium, OpenGL
• Minecraft Java 1.21.11 — Iris 1.10.7 + Sodium
• Minecraft Java 1.21.4 — Iris 1.8.8 + Sodium
• Minecraft Java 1.21.1 — Iris 1.8.12 + Sodium
• Minecraft Java 1.20.1 — Iris 1.7.6 + Sodium

Minecraft 26.2 must use the OpenGL graphics backend; Iris does not support the experimental Vulkan backend.

What's new

• true NTSC/PAL interlaced field weaving through the history buffer
• smooth correlated time-base error instead of block-like digital glitches
• feathered mechanical tracking tears and adjacent helical-track distortion
• tape noise, frame jitter, and RF events synchronized to the analog field rate
• selectable NTSC and PAL standards
• Performance, Balanced, and Cinematic quality levels
• separate temporal-history stabilization and spatial echo controls
• expanded English and Russian settings localization
• refreshed compatibility documentation and installation instructions

Verification

The universal ZIP contains 13 source files. Its extracted contents were matched against the repository source.

SHA-256: CEF49D901E7879C8CDD32BF10A8C8A3B76636E917A28F97A8BE3B940FA6781F8