How to deinterlace GRAY video and convert it to .avi? I have binary data stream from analogue camera and convert it to .avi with this

λ ffmpeg -f rawvideo -pix_fmt gray -s:v 700x220 -i orbita_d.bin -c:v rawvideo -pix_fmt yuv420p out.avi

what do I need to deinterlace it? I read about yadiff, but it looks like it doesn't work with raw pixel data.
ffmpeg -f rawvideo -pix_fmt gray -s:v 700x220 -i test1.bin -c:v rawvideo -pix_fmt gray -vf tinterlace,setpts=0.5*PTS out.avi

Do the trick for me.