Comment 1 for bug 1265233

Here is an example of some invalid JSON output from ffmpeg2theora: https://gist.github.com/messick/8202020

the key "handler_name" has a value with a '\f' character, which is illegal according to defintition of "char" on json.org. The following lists should be escaped:

\"
\\
\/
\b
\f
\n
\r
\t
\u four-hex-digits