Quick and Dirty HyperDeck Studio to H.264

ffmpeg -f concat -i files.txt -map_channel 0.1.0:0.1 -map_channel 0.1.1:0.1  -filter:a "aformat=channel_layouts=0xFFFF" -vcodec libx264 -preset ultrafast -r 25 -pix_fmt yuv420p -y output.mp4 

This will discard 14 of the 16 audio tracks, join the Capture000?-chunks, reencode ProRes to H.264, work around a bug in recent ffmpeg versions and is really fast (4x real time on a recent laptop).