Huffyuv
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Huffyuv (or HuffYUV) is a lossless video codec created by Ben Rudiak-Gould which is meant to replace uncompressed YCbCr as a video capture format. Despite the "YUV" in the name, it does not compress the YUV color space, but YCbCr. "Lossless" means that the output from the decompressor is bit-for-bit identical with the original input to the compressor, given that no color space conversion takes place. Huffyuv's algorithm is similar to that of lossless JPEG-LS, in that it predicts each sample and then Huffman-encodes the error.
[edit] Implementations
The original implementation was written for Windows by Ben Rudiak-Gould and published under the terms of the GPL. The implementation is considered very fast, giving a compression throughput of up to 38 megabytes per second on a 416 MHz Celeron. The official Huffyuv has not had a new release since 2002. A more up-to-date fork of the code is available as Lagarith.
The FFMPEG project also contains an implementation of HuffYUV which allows HuffYUV files to be created & played on Linux and Mac OS X. Additionally, this means that many of the applications which use FFMPEG as a base can also play/create HuffYUV files, including VLC media player, MPlayer and ffdshow.
[edit] See also
- Huffman coding
- Adaptive Huffman coding
- PPM compression algorithm
- YCbCr color space
- Lagarith Lossless Video Codec
- MSU Lossless Video Codec
[edit] External links
- Huffyuv homepage (mirror)
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