FFMpeg and Deinterlacing
Tips on using FFMpeg for deinterlacing video
Below is an example of using command line ffmpeg on Ubuntu for compressing interlaced video:

ffmpeg -ss 0 -i inputvideo.wtv -vf yadif -sn -vcodec libx264 -crf 25 -acodec libmp3lame -aq 6 outputvideo.mkv

Note that the -ss means start at that second, so -ss 10 would mean start at 10 seconds into the video

-vf yadif is what does the deinterlacing

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