What codecs should I use with DirectShow for Video-SL? We recommend using both of the following codecs for DirectShow for use with Video-SL: TIP: Click the codec name to download. * FFDShow* Haali Media Splitter (MatroskaSplitter) Use the defaults when installing. Note: If no codec is found, then QuickTime will be used to decode the video. Related articles How do I play MPEG-1 or MPEG-2 files in Video-SL?