Is SheerVideo faster than PNG?
Yes, SheerVideo encodes 60 times faster (110 MiB/s on a single-processor 1 GHz Mac G4) than Apple’s excellent PNG codec implementation (1.8 MiB/s), and decodes nearly 6 times as fast (100 MiB/s) as PNG (17.6 MiB/s). What’s more, SheerVideo is 20% more powerful (2.20) than PNG (1.80) for real-world footage. And, unlike PNG, SheerVideo supports native video formats as well as RGB[A]. But for poster-quality pictures, PNG is in general a lot more powerful. In fact, PNG provides excellent support for low-quality formats such as indexed-color images, which SheerVideo does not.
