nice -n19 ffmpeg -i eastdsrt-wvsplit.mp4 -ss 0.64 -i ~/.dosbox/capture/adtrack2_006.avi -i ../wv-channelovrl-opl3.png -ss 0.64 -i ../eastdsrt-audio.flac -filter_complex '

color=s=2560x1440:r=60 [bbg];

[1:v] format=rgb24, scale=w=2160:h=1440:flags=neighbor, scale=w=1920:h=1440:flags=bicubic [adtvid];

[bbg][adtvid] overlay=shortest=true:format=rgb [bbg1];

[bbg1][0:v] overlay=x=1920:shortest=true:format=rgb [bbg2];

[bbg2][2] overlay=x=1919:format=rgb [bbgvo];

[3] showfreqs=s=1920x1440:ascale=sqrt:fscale=log:win_size=w1024:colors=#BB005C|#00BB5C, format=pix_fmts=rgb24, pad=w=2560 [sp];

[bbgvo][sp] blend=all_mode=addition [vo]

' -map [vo] -map 3 -codec:v huffyuv -codec:a copy -f matroska - | nice -n19 ffmpeg -i - -codec:v libx264 -preset slow -crf 0 -codec:a flac -y ../eastdsrt-render.mkv