While the WMV video format is in no way so popular as was some 5-10 years ago (even Microsoft allows for converting / recording into H.264 in their current, free video encoding / capture apps, unlike in earlier days), about 5.5% of current video playback attempts on iOS are originating from WMV files, of which the (current) WMV3 format accounts to 4.53%, the previous (outdated) WMV2 format 0.68% and the oldest (and highly outdated) WMV1 0.22%. (Thanks for the excellent statistics for the “It's Playing” developers, and keep up the good work!).