"Why didn't JPEG2000 take off?", but answered with rhetoric technical questions:
Why did they use the world's slowest entropy coding system and made it slower?
Why use wavelets when they're far worse than a DCT for frequency decomposition and because of this create bad artifacts and blur when highly quantized?
Why did they use wavelets when they knew this prevents easy pixel domain prediction, something video codecs and PNG proved works great.
Why is the bitstream batshit crazy?

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A Mastodon instance for people interested in multimedia, codecs, assembly, SIMD, and the occasional weeb stuff.