Dump streams, vlecs (personal use, of course), videos - mplayer -dumpfile [file] -dumpstream [url]
ctrl-a ctrl-D
From https://stackoverflow.com/questions/12999651/how-to-remove-non-utf-8-characters-from-text-file specifically from http://stackoverflow.com/a/17048486/189995
iconv -f utf-8 -t utf-8 -c file.txt