Vav2Player is a modern video player specifically designed for AV1 video codec support with hardware acceleration. Built using WinUI 3 and DirectX 12, it provides real-time decoding and GPU-accelerated rendering for optimal performance.

Features

Video Playback

AV1 Codec Support: Native AV1 video decoding using dav1d library
Hardware Acceleration: Intel QSV, NVIDIA NVDEC, AMD VCN support via Media Foundation
Real-time Performance: 30fps+ playback for 4K content
Multiple Formats: WebM, MKV container support

GPU Rendering Pipeline

Zero-CPU Conversion: Direct GPU YUV→RGB conversion using HLSL shaders
D3D12 Acceleration: Modern graphics pipeline with command list pooling
Dependency Scheduling: Advanced GPU task scheduler for optimal resource utilization
Memory Optimization: Frame pooling and zero-copy texture uploads

User Interface

WinUI 3: Modern Windows application framework
Multi-Window Support: Multiple video windows with independent playback
Aspect Ratio: Automatic AspectFit scaling with proper letterboxing
Responsive Design: Real-time window resizing and layout updates

Technical Specifications

System Requirements

OS: Windows 10 version 1903 or later
Architecture: x64 only
GPU: DirectX 12 compatible graphics card
RAM: 8GB minimum, 16GB recommended for 4K content

Supported Formats

Video Codecs: AV1
Containers: WebM (.webm), Matroska (.mkv)
Color Spaces: YUV420P, YUV422P, YUV444P with BT.709 conversion
Resolutions: Up to 8K (7680×4320)

Performance Targets

4K Playback: 0.6-1.3ms GPU render time (15-30x improvement over CPU)
Memory Usage: Optimized frame pooling with configurable buffer sizes
Latency: Real-time decoding with minimal buffering

Architecture

Core Components

AV1Decoder: dav1d and Media Foundation decoder backends
YUVRenderer: GPU-based YUV→RGB conversion pipeline
DependencyScheduler: Multi-threaded GPU task scheduling
CommandListPool: D3D12 command list pooling for reduced overhead
VideoPlayerControl: WinUI 3 video display component

Performance Optimizations

GPU Pipeline: Hardware-accelerated YUV→RGB shader conversion
Memory Pooling: Reusable frame and packet buffers
Zero-Copy Operations: Direct texture uploads without CPU intervention
Async Processing: Multi-threaded decode and render pipeline

Build Requirements

Development Environment

Visual Studio 2022: Community, Professional, or Enterprise
Windows SDK: 10.0.26100.0 or later
C++ Standard: C++17 or later
WinUI 3: Windows App SDK 1.8

Dependencies

dav1d: AV1 decoder library
libwebm: WebM container parsing
DirectX 12: Graphics and compute pipeline
Media Foundation: Hardware decoder integration

Quick Start

Building the Project

cd vav2/Vav2Player/Vav2Player
MSBuild.exe Vav2Player.vcxproj /p:Configuration=Debug /p:Platform=x64

Running Tests

# Headless test runner
cd x64/Debug/Headless
.\Vav2PlayerHeadless.exe "path/to/video.webm"

# Unit tests
vstest.console.exe "x64\Debug\UnitTest\Vav2UnitTest.dll"

Project Status

Current State

✅ AV1 decoding (software and hardware)
✅ GPU YUV→RGB shader pipeline
✅ Multi-window video playback
✅ Real-time performance optimization
✅ Memory management and pooling

Performance Achievements

GPU Rendering: 15-30x performance improvement over CPU conversion
Memory Efficiency: Reduced allocations through frame pooling
Hardware Acceleration: Automatic fallback from GPU to CPU decoding
4K Support: Smooth playback of high-resolution AV1 content

Development

Code Structure

src/
├── Common/          # Shared utilities and data types
├── Decoder/         # AV1 decoder implementations
├── FileIO/          # WebM/MKV file parsing
├── Pipeline/        # Multi-threaded processing pipeline
├── Rendering/       # GPU rendering and D3D12 integration
└── Output/          # File output and testing utilities

Testing

Unit Tests: Component-level testing with Microsoft Test Framework
Headless Mode: Console application for automated testing
Performance Benchmarks: GPU vs CPU rendering comparisons

Requirements

DirectX 12 Dependencies

DirectX 12 Agility SDK via NuGet package for d3dx12.h support
Reference: https://github.com/microsoft/DirectXTK12/wiki/Getting-Started

License

This project is developed for educational and research purposes.

README.md Unescape Escape

Vav2Player

Overview