Is SheerVideo faster than DV or DV-25?
Yes, SheerVideo compresses more than 5 times as fast (110 versus 19 MiB/s on a single-processor 1 GHz Mac G4) and decompresses nearly twice as fast as (100 versus 54 MiB/s) Apple’s blazingly fast DV-25 codec implementation for RGB. For Y’CbCr 8bv 4:2:2, SheerVideo compresses 8 times as fast as DV (113 versus 14 MiB/s) and decompresses just as fast as DV (88 MiB/s compared to 87). And SheerVideo does this while maintaining perfect fidelity, whereas DV-25 degrades the image by an average of 3.75 b/S (bits per sample) for Y’CbCr 8bv 4:2:2, and 2.48 b/S for RGB 8b. Moreover, unlike DV, which only supports two standard resolutions, NTSC (720 x 480) and PAL/SECAM (720 x 576), SheerVideo supports images of any resolution. And SheerVideo also supports alpha, which DV-25 doesn’t. On the other hand, for low-end standard-definition video work, DV-25 is generally a much more cost-effective solution.
