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HAP is a family of video codecs which perform decompression using a computer's graphics hardware, substantially reducing the CPU usage necessary to play video — this is useful in situations where CPU power is a limiting factor, such as when working with multiple high resolution videos in real-time.

Please visit theHAP site for links to encoders and more information about HAP as well as resources for developers.

This repository hosts theHAP specification andreference source code for encoding and decoding HAP frames. It will be of interest to those implementing their own decoder or encoder.

Developers of decoders may find the following packs of material useful for testing:

• Odd Dimensions: Samples with irregular dimensions (2 MB zip)
• 16K: Samples at high resolution (35 MB zip)
• FFmpeg: Samples encoded using FFmpeg (24 MB zip)
• TouchDesigner: Samples encoded using Derivative TouchDesigner (1.5 GB zip)
• AVF Batch Converter: Samples encoded using Vidvox AVF Batch Converter (35 MB zip)
• QuickTime Codec: Samples encoded using the Vidvox QuickTime codec (20 MB zip)
• DirectShow Codec: Samples encoded using the RenderHeads DirectShow codec (5 MB zip)

Vidvox also havea selection of sample media.

The HAP codec project is open-source, licensed under aFree BSD License, meaning you can use it in your commercial or noncommercial applications free of charge.

We like to know about software that supports HAP, so if you are using it for a project, please get in touch.

This project was originally written byTom Butterworth and commissioned byVIDVOX, 2012.