Currently Being ModeratedNov 7, 2011 8:49 PM (in response to JJkabanko)
It seems FCP suppors m4v formats, but I am not sure. If not, you can use Total Video Converter on App store to convert m4v to mov or mp4, then import the converted mp4 or mov file to FCP.
I know "Total Video Converter" as its famous windows version.
Currently Being ModeratedNov 8, 2011 7:28 AM (in response to JJkabanko)
I have them on a USB stick in MTS format only.
It will help a lot if you tell us the exact make/model camcorder your friend used.
Assuming it was originally AVCHD video, you will need to use ClipWrap to convert the MTS files to QuickTime/Apple Intermediate Codec. As far as I know, MPEG Streamclip will not work with bare MTS files. (Bare = meaning just the MTS files, missing the AVCHD folder structure that needs to be present for most apps to recognize the video.)
Also, Handbrake is totally the wrong app to use in this situation. Ditto for converting the files to M4V or MP4. Ditto for doing multiple conversions. You want to convert directly from the MTS files to QuickTime/Apple Intermediate Codec.
Currently Being ModeratedNov 5, 2012 9:16 PM (in response to JJkabanko)
MTS is a file extension for the high definition digital video camera recorder format, AVCHD (Advanced Video Codec High Definition). MTS format, based on the MPEG-2 transport stream, supports 720p and 1080i HD video and is now widely used. But will can not play MTS movies on ipad, so Google search one video software convert MTS to m4v . for example :http://www.google.com/search?hl=en&newwindow=1&tbo=d&output=search&sclient=psy-a b&q=http%3A%2F%2Fwww.brosvideo.com%2Fmts-converter.html&btnK=