Quicktime is a both a great platform for video and a great playback engine since it supports a very wide range of video codecs. However, there is room for improvement. VLC can play even more video with winder codec support. Enter, Perian, the Quicktime Component you've been waiting for. Perian will play all types of DivX and MS-MPEG-4 codecs plus it also plays Flash Video. This is great because it makes it incredibly easy to transcode these formats into other standards-based codecs like H.264.