mts to wmv conversion time
Conversion from mts (AVHCD?) to WMV will entail some quality loss, especially if you cut the bitrate. Unless my recollections are obsolete, WMV conversion utilities often reduce the bitrate to something like 5mbps, which may serve for streaming, but makes the video a bit mushy.
Were the 45 minute files shot with an AVCHD camcorder? What resolution, bitrate?
Any particular reason to convert?
Some applications would allow you play the MTS files as they are, or burn them to Blu-ray with little or no recoding or quality loss.