Please Note: ASFCut is not longer supported by the author. The work continues in AsfBin.
From the Author :
ASFCut is a command line utility for cutting out fragments, joining,
modifying and reparing ASF files. ASFCut can be applied for any ASF files that is
not only those with ASF extension but also those with WMV and WMA
The whole operation is performed without any recompression. Thus the
video quality is not degraded. ASFCut can simultaneously perform all
mentioned actions including audio stream(s) shift with only one single
The result of an operation is always one media file. Maybe the most
important feature to many of users is the fact that ASFCut can handle
damaged files. It simply skips bad area and starts after finding next
good frame. Of course if an ASF file has damaged header then repairing
will not be possible by this software.