It's a free tool which helps you convert videos from one format to other.

Supported Formats:

Input Format	Output Format
AVI	AVI WMV MPEG MOV (Quick Time) VCD VCD DVD
WMV	AVI WMV MPEG MOV (Quick Time) VCD VCD DVD
MPEG	AVI WMV MPEG MOV (Quick Time) VCD VCD DVD
MOV	AVI WMV MPEG MOV (Quick Time) VCD VCD DVD
MP4	AVI WMV MPEG MOV (Quick Time) VCD VCD DVD
3GP	AVI WMV MPEG MOV (Quick Time) VCD VCD DVD
ASF	AVI WMV MPEG MOV (Quick Time) VCD VCD DVD