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Is SheerVideo faster than Motion JPEG?

April 26, 2017faster JPEG motion SheerVideo

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Is SheerVideo faster than Motion JPEG?

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Yes, for RGB and Y’CbCr 8bv 4:4:4, SheerVideo compresses 3 times as fast (110 MiB/s on a single-CPU 1 GHz Mac G4) as Apple’s blisteringly fast Motion JPEG A and Motion JPEG B codec implementations (36 MiB/s) at their Best quality setting, and decompresses twice as fast (100 MiB/s) as Motion JPEG (47 MiB/s). For Y’CbCr 8bv/w 4:2:2, SheerVideo (113 MiB/s) compresses 4 times as fast as M-JPEG (26 MiB/s) and decompresses (88 MiB/s) nearly 3 times as fast as M-JPEG (35 MiB/s). What’s more, SheerVideo achieves this speed advantage without sacrificing a single bit of image quality, in contrast to Motion JPEG, which compresses the image by approximating it and hence degrading it. Even so, SheerVideo is comparable in power to Best-quality Motion JPEG. And unlike Motion JPEG, SheerVideo supports alpha. On the other hand, Motion JPEG also provides for much higher compression power than a perfect-fidelity codec can possibly achieve.