MPV_FORMAT_OSD_STRING constant
int
const MPV_FORMAT_OSD_STRING
The basic type is char*. It returns the OSD property string, like using ${property} in input.conf (see input.rst). In many cases, this is the same as the raw string, but in other cases it's formatted for display on OSD. It's intended to be human readable. Do not attempt to parse these strings.
Only valid when doing read access. The rest works like MPV_FORMAT_STRING.
Implementation
static const int MPV_FORMAT_OSD_STRING = 2;