by Francesco Schiavon
November 20, 2001

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Work that Body (fash.avi source file)

All three clips held their frame rates; however, they looked darker than the (already dark) source, with Sorenson being the darkest. For temporal quality, Sorenson had a slight pixilation on the fast-moving dresses, and bad macroblocks showed in the countdown. Regarding spatial quality, Windows Media 8 and Real blurred the content more than Sorenson, and Windows Media 8 would show some pixilation in the countdown. On the Mac, all three clips looked lighter, though Windows Media turned it grey again. Also on the Mac, Windows media showed slightly more pixilation than the others.

As in the 30Kbps version of the fash.avi, all output files were too dark, so this deducted points from all three for color shift, with Sorenson (again) the darkest. The Real Media and Sorenson versions had a slight pixilation on the green and red dresses, affecting the temporal quality mark. By the same token, Real and Windows Media showed a slight blur to the image in general. On the Mac side, Sorenson was the only video not as dark as on the PC, though all three were brighter than on the PC. Real could not keep up with the frame rate of 29.97fps, and (as with every clip) Windows Media 8 displayed the system interrupt problem.

These results of the 604Kbps versions of the fash.avi are very similar to those of the 252Kbps version. In the color department, all looked darker, with Sorenson again the darkest. Frame rate and temporal quality was generally good, though Real and Windows Media had slightly blurry images while Sorenson was sharper. On the Mac, as all the clips looked lighter than on the PC, they displayed better color, but Windows Media and Real dropped frames, with Real's frame dropping more pronounced.