Convert MTS video to OGV (OGG) format via Terminal Is there a way to convert MTS video format to OGV? And how could you set desired size of output file or file resolution?
It could be done with ffmpeg. First, install it with vorbis support:

brew install ffmpeg --with-libvpx --with-theora --with-libogg --with-libvorbis


After that, run command:

ffmpeg -i input_file.mts -acodec libvorbis -crf 21 -r 30000/1001 -deinterlace -vpre lossless_medium -y -threads 0 output_file.avi