Hi, maybe you can try this powerful total video converter. It is a professional total video converter which can convert between any video formats including MPG, MPEG, MPEG2, MP4, H.264, SWF, FLV, VOB, MOD, M4V, AVI, WMV, 3GP, 3GPP, MOV, DivX, XviD, QuickTime Video, DV, MJPG, MJPEG, MPV, etc, along with HD videos, like HD TS, HD MPG, HD MPEG, HD MP4, HD AVI, etc and extract audio from these video.
You can free download it here.
Here is the detailed instructions guide you.
Step 1: Install and Run the Converter
Step 2: Click “Add File” to add your video files.
Step 3: you can find one format that meets your requirement from the “Profile” drop-down list
After doing the steps above, you can click “START” button to start conversion.
If you just want converter a clip of your video, then you can use the "Trim" icon to set the Start time and End time of the clip or you can directly drag the slide bar to the accurate position.
Hope this helps.
Just go to have a try, hope this sharing can help you.