{"border_mask","increase the quantizer for macroblocks close to borders",FF_MPV_OFFSET(border_masking),AV_OPT_TYPE_FLOAT,{.dbl=0},-FLT_MAX,FLT_MAX,FF_MPV_OPT_FLAGS}, \
{"rc_init_occupancy","number of bits which should be loaded into the rc buffer before decoding starts",OFFSET(rc_initial_buffer_occupancy),AV_OPT_TYPE_INT,{.i64=DEFAULT},INT_MIN,INT_MAX,V|E},