Discrete Cosine Transform of 8×8 blocksĥ. Chroma sub sampling, usually to 4:2:0 (supported also 4:2:2 or 4:4:4)ģ. Color Space convertion from RGB to YCbCrĢ. JPEG is usually capable to compress image size 1:10. It has been one of the most important technology for the web because without an efficient way to compress still pictures the web would not be what it is today. JPG is an international standard approved in 1992-94. So let’s take a look at how to produce such file and the advantage of using it inside Flash Player. The intra-frame compression techniques implemented in H.264 are very efficient, much more advanced than the old JPG and superior to WebP too. Not everybody know it but also H.264 is very good at encoding still picture and differently from WebM or WebP the 97% of PC are already capable to decode it (someone has said ‘Flash Player’ ?). The initiative proposes a substitute of JPEG for image compression using the intra frame compression technique of the WebM project (Codec VP8). Recently Google has presented the WebP initiative.
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