Main features include a wide variety of audio and video filters, internal post processing, volume customizing, autodownloading of the required codecs, dynamic XML skins, friendly zooming, pan-and-scan, dragging, subtitles support (SRT, SMI, SUB, JS, DKS, MPL, RT, SMIL, and SSA), external audio files, OSD with anti-aliasing and blending effects, screenshots in JPEG and BMP, a wide variety of delicate options for the player's kernel (overlays, hardware decompression, buffering, audio restrictions, preloading, caching of the data), customs and corrections for special files and playlists, and user-friendly OSD brightness, contrast, saturation, hue and sharpness. Crystal Player Professional includes full help contents with explanations of how to use all Crystal features.