I shot several videos during our family trip to Universal Studio Singapore and Legoland on my D7000. Nikon D7000 saves video on MOV format file, but I would like to keep them as MP4 files to match our smartphones videos from Note 2 and LG G2.
Here is how I converted Nikon D7000 MOV to MP4 on my Ubuntu 15.04:
apt-get install ffmpeg ffmpeg -i DSC_2041.MOV -vcodec libx264 -strict -2 -pix_fmt yuv420p result.mp4