Long answer : RockPlayer can support audio and video container format: avi, mkv, rmvb, mp4, mov, wmv, asf, wma, wav, mpg, ts, mpa, dvd, au, mp3, mid, ivf, aiff, ogm, ogg, cda, flic, d2v, aac, roq, flac, drc, dsm, swf, pls, & pmp. Audio and video encoding format AAC, AC3, DTS, FLV4, LPCM, ALAW, ULAW, MPEG Audio, MPEG-1, MPEG-2, RealVideo, RealAideo, Vorbis, AVC, VC1, XVID, DIVX, SVQ, Theora Bink (Theora Bink basically includes all popular multimedia formats).
Short answer : no
(......unless they just forgot to list it?)