encoder_example segfaults on invalid options
Run "encoder_example --framerate-numerator" or "encoder_example --framerate-denominator"; these will segfault (at least they do on my system), while "encoder_example -f" and "encoder_example -F" do not. This is due to incorrect handling of long options. The same goes for the long options "--aspect-numerator" and "--aspect-denominator".
This is the same pattern that caused #1444 (closed)--options[] doesn't match optstring.