Only the frame* muxers support the format_version option.
Use macros to ease the proliferation of identical options to
coming muxers as well.
Signed-off-by: Moritz Barsnick <barsnick@gmx.net>
Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>