def ffmpeg_version():
cmd = [<EOL>'<STR_LIT>',<EOL>'<STR_LIT>'<EOL>]<EOL>output = sp.check_output(cmd)<EOL>aac_codecs = [<EOL>x for x in<EOL>output.splitlines() if "<STR_LIT>" in str(x)<EOL>][<NUM_LIT:0>]<EOL>hay = aac_codecs.decode('<STR_LIT:ascii>')<EOL>match = re.findall(r'<STR_LIT>', hay)<EOL>if match:<EOL><INDENT>return "<STR_LIT>".join(match[<NUM_LIT:0>])<EOL><DEDENT>else:<EOL><INDENT>return None<EOL><DEDENT>
Returns the available ffmpeg version

    Returns
    ----------
    version : str
        version number as string