SwitchCast v1.2.0 — Release Notes

Release Date: October 10, 2026

Target Platform: Windows 10 (version 1809+) & Windows 11 (x64)

Binary Package: SwitchCast-v1.2.0-win-x64.zip

Creator: John Christopher King Zamora

Repository: https://github.com/jczamora-git/SwitchCast

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🚀 Overview

SwitchCast v1.2.0 is a major feature and stability release introducing full local media presentation (Images & Videos), high-fidelity video audio playback with volume controls, dedicated dock-controlled fullscreen presentation output, native non-client caption dragging for the Floating Presenter Dock, and a permanent resolution to the playback timeline cross-thread COMException.

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✨ What's New in v1.2.0

🖼️ Full Media Presentation Integration (Images & Videos)

• Direct File Import: Presenters can now import local images (.png, .jpg, .jpeg, .bmp, .gif) and video files (.mp4, .mkv, .mov, .wmv, .avi) directly into the SwitchCast presentation queue.
• Unified Presentation Queue: Media sources seamlessly interleave with desktop application windows and physical monitors.
• Native Video Playback: Direct hardware-accelerated playback utilizing Windows.Media.Playback.MediaPlayer and MediaPlayerElement.

🔊 Local Media Audio Playback & Volume Control

• Audible Local Playback: Videos now produce audible local sound connected directly to Windows audio endpoints.
• Mute & Volume Controls: Dedicated volume slider (0–100%) and instant mute toggle (\uE74F/\uE767) on both the Control Dashboard and the Floating Presenter Dock.
• Atomic Seek Synchronization: Audio and video seek, pause, resume, and restart in perfect lockstep.

🖥️ Fullscreen Presentation Output

• Dock-Controlled Fullscreen Toggle: Switch between standard windowed mode and true borderless fullscreen (AppWindowPresenterKind.FullScreen) directly from the Floating Presenter Dock.
• Same HWND Continuity: Transitions preserve the identical Win32 HWND, active capture session, and media stream without interrupting meeting shares.
• 100% Viewport Coverage: Title bar collapses automatically in fullscreen mode with 16:9 aspect ratio preserved. Press Escape to quickly exit fullscreen.

🎛️ Floating Presenter Dock Finalization

• Native Caption Dragging: Replaced custom pointer routing with genuine Windows App SDK InputNonClientPointerSource caption regions, eliminating sticky dragging or click-to-move anomalies.
• Adaptive Video Transport Controls: When a video source is on-air, the dock dynamically reveals timeline scrubber controls (Restart, Backward 10s, Play/Pause, Forward 10s, live timecode mm:ss / mm:ss).
• Unified Toolbar Layout: Streamlined 680 DIPs single-row baseline layout with instant source switching, mode selector, and fullscreen toggle.

🛡️ Critical Stability & Threading Hotfix

• Permanent Elimination of COMException 0x8001010E (RPCEWRONG_THREAD):
• Replaced background thread-pool timers with a single, UI-owned Microsoft.UI.Dispatching.DispatcherQueueTimer.
• Enforced strict WinUI 3 UI thread affinity for all PropertyChanged notifications bound to XAML slider controls.
• Eliminated unsafe fallback execution branches on worker threads.

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📥 Download & Installation

Windows x64 Standalone Package

• Package Archive: SwitchCast-v1.2.0-win-x64.zip
• SHA-256 Checksum: SwitchCast-v1.2.0-win-x64.sha256

How to Run:

1. Download SwitchCast-v1.2.0-win-x64.zip.

2. Extract the archive to any folder on your PC.

3. Launch SwitchCast.exe.

4. Zero external .NET runtimes or Visual Studio installations required (Self-Contained package).

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⌨️ Default Keyboard Shortcuts

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📋 System Requirements

• OS: Windows 10 (version 1809 / build 17763 or later) or Windows 11
• Architecture: 64-bit (x64)
• Graphics: Direct3D 11 compatible GPU or WARP software fallback

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👨‍💻 Creator & Attribution

Developed with precision by John Christopher King Zamora

GitHub: @jczamora-git

Repository: https://github.com/jczamora-git/SwitchCast