diff --git a/inc/rk_venc_cmd.h b/inc/rk_venc_cmd.h
index 6747bcb0..6ce19893 100644
--- a/inc/rk_venc_cmd.h
+++ b/inc/rk_venc_cmd.h
@@ -559,6 +559,8 @@ typedef enum MppEncH264CfgChange_e {
     MPP_ENC_H264_CFG_CHANGE_MAX_POC_LSB     = (1 << 11),
     /* change on log2 max frame number minus 4 */
     MPP_ENC_H264_CFG_CHANGE_MAX_FRM_NUM     = (1 << 12),
+    /* change on gaps_in_frame_num_value_allowed_flag */
+    MPP_ENC_H264_CFG_CHANGE_GAPS_IN_FRM_NUM = (1 << 13),
 
     /* change on max_qp / min_qp */
     MPP_ENC_H264_CFG_CHANGE_QP_LIMIT        = (1 << 16),
@@ -607,6 +609,7 @@ typedef struct MppEncH264Cfg_t {
     RK_U8               poc_type;
     RK_U8               log2_max_poc_lsb;
     RK_U8               log2_max_frame_num;
+    RK_U32              gaps_not_allowed;
 
     /*
      * H.264 profile_idc parameter
diff --git a/mpp/base/mpp_enc_cfg.cpp b/mpp/base/mpp_enc_cfg.cpp
index 46c840dc..9aea0609 100644
--- a/mpp/base/mpp_enc_cfg.cpp
+++ b/mpp/base/mpp_enc_cfg.cpp
@@ -169,6 +169,7 @@ RK_U32 mpp_enc_cfg_debug = 0;
     ENTRY(h264, poc_type,       U32, RK_U32,            MPP_ENC_H264_CFG_CHANGE_POC_TYPE,       codec.h264, poc_type) \
     ENTRY(h264, log2_max_poc_lsb,   U32, RK_U32,        MPP_ENC_H264_CFG_CHANGE_MAX_POC_LSB,    codec.h264, log2_max_poc_lsb) \
     ENTRY(h264, log2_max_frm_num,   U32, RK_U32,        MPP_ENC_H264_CFG_CHANGE_MAX_FRM_NUM,    codec.h264, log2_max_frame_num) \
+    ENTRY(h264, gaps_not_allowed,  U32, RK_U32,         MPP_ENC_H264_CFG_CHANGE_GAPS_IN_FRM_NUM, codec.h264, gaps_not_allowed) \
     ENTRY(h264, cabac_en,       S32, RK_S32,            MPP_ENC_H264_CFG_CHANGE_ENTROPY,        codec.h264, entropy_coding_mode) \
     ENTRY(h264, cabac_idc,      S32, RK_S32,            MPP_ENC_H264_CFG_CHANGE_ENTROPY,        codec.h264, cabac_init_idc) \
     ENTRY(h264, trans8x8,       S32, RK_S32,            MPP_ENC_H264_CFG_CHANGE_TRANS_8x8,      codec.h264, transform8x8_mode) \
diff --git a/mpp/codec/enc/h264/h264e_api_v2.c b/mpp/codec/enc/h264/h264e_api_v2.c
index bdeca78c..850975e0 100644
--- a/mpp/codec/enc/h264/h264e_api_v2.c
+++ b/mpp/codec/enc/h264/h264e_api_v2.c
@@ -349,6 +349,11 @@ static MPP_RET h264e_proc_h264_cfg(MppEncH264Cfg *dst, MppEncH264Cfg *src)
         dst->log2_max_frame_num = src->log2_max_frame_num;
         dst->change |= MPP_ENC_H264_CFG_CHANGE_MAX_FRM_NUM;
     }
+    if ((change & MPP_ENC_H264_CFG_CHANGE_GAPS_IN_FRM_NUM) &&
+        (dst->gaps_not_allowed != src->gaps_not_allowed)) {
+        dst->gaps_not_allowed = src->gaps_not_allowed;
+        dst->change |= MPP_ENC_H264_CFG_CHANGE_GAPS_IN_FRM_NUM;
+    }
     if ((change & MPP_ENC_H264_CFG_CHANGE_ENTROPY) &&
         ((dst->entropy_coding_mode != src->entropy_coding_mode) ||
          (dst->cabac_init_idc != src->cabac_init_idc))) {
diff --git a/mpp/codec/enc/h264/h264e_sps.c b/mpp/codec/enc/h264/h264e_sps.c
index 3c0a1117..b66c9124 100644
--- a/mpp/codec/enc/h264/h264e_sps.c
+++ b/mpp/codec/enc/h264/h264e_sps.c
@@ -141,7 +141,7 @@ MPP_RET h264e_sps_update(H264eSps *sps, MppEncCfgSet *cfg)
     // max one reference frame
     sps->num_ref_frames = info->dpb_size;
 
-    sps->gaps_in_frame_num_value_allowed = 0;
+    sps->gaps_in_frame_num_value_allowed = !h264->gaps_not_allowed;
 
     // default 720p without cropping
     sps->pic_width_in_mbs = aligned_w >> 4;