A versatile local audio and video multimedia player that supports all major video and audio formats, featuring a simple interface and quick startup. Core Features: Built-in HTML5 playback engine with native support for common video and audio formats (dynamic detection, only playable formats are displayed in the interface). Automatic fallback playback: For legacy/proprietary containers and codecs like MPEG-1/2, WMV, and AVI, incompatibility is detected, automatically using native MPV playback to ensure playback. Built-in playback (HTML5, platform-specific, dynamically displayed in the interface). Video: MP4/H.264, WebM (VP8/VP9), Ogg/Theora Audio: MP3, AAC, Opus, Vorbis, WAV Drag-and-drop import and playlist; play/pause, fast forward/rewind, skip, speed, mute, and volume. Subtitle loading and styling adjustments (SRT/ASS/VTT/SSA), audio and video synchronization fine-tuning. Themes and appearance: Light/dark themes, color emphasis, video filters, and display modes. Streaming support: HLS/DASH, etc. (enabled based on environment capabilities).