OFFSET(cqp), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 51, VE },
{ "weighted_pred","Set 1 to enable weighted prediction",
OFFSET(weighted_pred),AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
+#ifdef NVENC_HAVE_HEVC_BFRAME_REF_MODE
+ { "b_ref_mode", "Use B frames as references", OFFSET(b_ref_mode), AV_OPT_TYPE_INT, { .i64 = NV_ENC_BFRAME_REF_MODE_DISABLED }, NV_ENC_BFRAME_REF_MODE_DISABLED, NV_ENC_BFRAME_REF_MODE_MIDDLE, VE, "b_ref_mode" },
+ { "disabled", "B frames will not be used for reference", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_BFRAME_REF_MODE_DISABLED }, 0, 0, VE, "b_ref_mode" },
+ { "each", "Each B frame will be used for reference", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_BFRAME_REF_MODE_EACH }, 0, 0, VE, "b_ref_mode" },
+ { "middle", "Only (number of B frames)/2 will be used for reference", 0,AV_OPT_TYPE_CONST, { .i64 = NV_ENC_BFRAME_REF_MODE_MIDDLE }, 0, 0, VE, "b_ref_mode" },
+#else
+ { "b_ref_mode", "(not supported)", OFFSET(b_ref_mode), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE, "b_ref_mode" },
+ { "disabled", "", 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, 0, 0, VE, "b_ref_mode" },
+ { "each", "", 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, 0, 0, VE, "b_ref_mode" },
+ { "middle", "", 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, 0, 0, VE, "b_ref_mode" },
+#endif
+ { "dpb_size", "Specifies the DPB size used for encoding (0 means automatic)",
+ OFFSET(dpb_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
{ NULL }
};