HyCast Studio — YouTube & Webcam Streams Inside Hytale

Operators broadcast YouTube videos and webcam feeds directly into players' in-game HUDs.
No browser. No alt-tab. Just pure Hytale, with video.

⚠ Requires external software — this plugin will not work out of the box. yt-dlp and ffmpeg must be installed on the server machine before use. See Requirements below.

What Is This?

HyCast Studio is a server plugin that renders real video — frame by frame — inside a native Hytale HUD overlay. Operators control all video playback and broadcast YouTube videos, YouTube Shorts, or webcam feeds to every player on the server.

Players can tune in to the active broadcast or close their own HUD — that's it.

This is a technical case study, not a polished production mod. Video renders without audio — the missing audio alone makes this impractical for real use. It demonstrates what's possible with Hytale's UI system, not what's ready for a live server.

Features

• Operator-controlled broadcasts — operators start and manage all video playback; players watch
• Webcam stream — show a webcam feed in-game
• Server broadcasts — operators stream to every player at once
• Broadcast Planner — operators build multi-scene playlists with YouTube clips, webcam, and static noise; reorder, save, and load them in-game via a GUI; preview personally before going live
• Video caching — videos pre-download to disk so playback starts fast and skips re-downloading the same clip
• YouTube Shorts — portrait-mode canvas automatically resizes for 9:16 content
• Scrolling text — broadcast a ticker message that scrolls across every player's HUD
• Sequences — play multiple scenes back-to-back, HUD closes cleanly when the last one ends
• Linux + Windows — works on both; Flatpak users get automatic host delegation

Requirements (server host only)

Install yt-dlp and ffmpeg on the machine running the Hytale server.

Linux

# Ubuntu / Debian
sudo apt install ffmpeg yt-dlp

Both binaries must be at /usr/bin/yt-dlp and /usr/bin/ffmpeg.

Running Hytale through Flatpak? Grant host and webcam access once:

flatpak override --user com.hypixel.HytaleLauncher --talk-name=org.freedesktop.Flatpak
flatpak override --user com.hypixel.HytaleLauncher --device=all

Windows

Add yt-dlp.exe and ffmpeg.exe to your system PATH.

Commands

All commands use /hycast or the alias /hcs.

Player Commands

Operator — Getting Started

Start here: /hycast planner opens the broadcast planner GUI. Build a scene sequence, save it by name, and launch it as a personal preview or live broadcast — all without leaving the game. The raw commands below exist for quick one-off playback; for anything planned, use the planner.

Operator — Personal Preview (HUD visible to you only)

Use these to test a source before going live. Only your own HUD is affected.

Operator — Direct Broadcast (opens HUD for all players)

Note: Every broadcast command and any plan executed via the planner as a broadcast immediately opens the video HUD for all players on the server (or those who /hycast join). Use personal preview first to verify your content.

URL Format

Only official YouTube URLs are accepted:

• https://www.youtube.com/watch?v=...
• https://www.youtube.com/shorts/...
• https://youtu.be/...

Notes

• No audio — video plays silently. For voice and ambient sound, use Hytale's built-in proximity voice chat alongside the stream
• Video renders at 10 FPS at low resolution — optimised for in-game use, not cinema quality
• Cached videos are stored in /tmp/hycast_*.mp4 on the server and reused across sessions
• Webcam capture requires the webcam to be accessible from the server machine
• Webcam scenes never end on their own — use /hycast broadcast next (or the planner's manual-advance) to move to the next scene in a sequence; same applies to static/text scenes with seconds = 0