Trying to convert subtitles with characters (accented) possibly changed by the opensubtitles.
Converting only the lowercase letters is ok
$cat legenda1.srt | tr 'AЯЖЗсржьзнЩКу' 'AÀÊÔãáéíóôúÇç' > teste.srt
With the capital letters of invalid code page
$cat legenda1.srt | tr '├┴┬╔' 'ÃÁÂÉ' > teste2.srt