The size of Windows Media Video (WMV) files is controlled entirely by the bit rate and the compression codec (compressor) you select. You can create smaller files by doing one or both of these things: Select a profile with a lower bit rate for audio and/or video than the original Select a profile with a superior compressor for audio and/or video. If you select one of the profiles in Digital Media Converter that are designed for online streaming, and pick a lower-bit rate profile, the final file will be smaller. For the greatest control and best compression and video quality, we suggest upgrading to Digital Media Converter Pro.