tunechr/MPD-downloader

A sample .NET 8 command-line application that downloads audio content from DASH (Dynamic Adaptive Streaming over HTTP) MPD (Media Presentation Description) manifests.

DASH MPD Downloader

A .NET 8 command-line application that downloads audio content from DASH (Dynamic Adaptive Streaming over HTTP) MPD (Media Presentation Description) manifests.

Features

• Parse MPD manifest XML files
• Extract audio segments from DASH streams
• Reconstruct complete audio files from individual segments
• Support for MPEG-DASH standard compliant streams
• Simple console-based progress reporting
• Command line arguments for MPD URL and output filename

Prerequisites

• .NET 8 SDK

Installation

Clone the repository: '''bash git clone https://github.com/yourusername/MPD-downloader.git cd MPD-downloader '''

Build the project:

dotnet build

Usage

Run the application with:

dotnet run --project MPD-downloader/MPD-downloader.csproj

To download from a specific MPD URL, modify the mpdUrl variable in Program.cs.

How It Works

1. Downloads and parses the MPD manifest XML
2. Identifies the audio representation and segment structure
3. Downloads the initialization segment
4. Sequentially downloads all media segments
5. Combines segments into a single output file

Limitations

• Currently only downloads audio streams
• No adaptive bitrate selection logic

Future Improvements

• Add command-line arguments for MPD URL and output filename
• Support for video download and multiplexing
• Add quality/bitrate selection options
• Implement resume functionality
• Add progress bar visualization (partially implemented)
• Parallel segment downloading for faster processing
• Support for other DASH features (multiple periods, dynamic manifests)
• Error recovery and retry logic

License

MIT

Acknowledgments

• MPEG-DASH for the streaming technology standard