diff --git a/libavcodec/riscv/h264dsp_init.c b/libavcodec/riscv/h264dsp_init.c
index bf9743eb6b..e1b725dcbb 100644
--- a/libavcodec/riscv/h264dsp_init.c
+++ b/libavcodec/riscv/h264dsp_init.c
@@ -21,12 +21,15 @@
 #include "config.h"
 
 #include <stdint.h>
+#include <string.h>
 
 #include "libavutil/attributes.h"
 #include "libavutil/cpu.h"
 #include "libavutil/riscv/cpu.h"
 #include "libavcodec/h264dsp.h"
 
+extern const h264_weight_func ff_h264_weight_funcs_8_rvv[];
+
 void ff_h264_v_loop_filter_luma_8_rvv(uint8_t *pix, ptrdiff_t stride,
                                       int alpha, int beta, int8_t *tc0);
 void ff_h264_h_loop_filter_luma_8_rvv(uint8_t *pix, ptrdiff_t stride,
@@ -60,6 +63,10 @@ av_cold void ff_h264dsp_init_riscv(H264DSPContext *dsp, const int bit_depth,
 # if HAVE_RVV
     if (flags & AV_CPU_FLAG_RVV_I32) {
         if (bit_depth == 8 && ff_rv_vlen_least(128)) {
+            memcpy(dsp->weight_h264_pixels_tab,
+                   ff_h264_weight_funcs_8_rvv,
+                   sizeof (dsp->weight_h264_pixels_tab));
+
             dsp->h264_v_loop_filter_luma = ff_h264_v_loop_filter_luma_8_rvv;
             dsp->h264_h_loop_filter_luma = ff_h264_h_loop_filter_luma_8_rvv;
             dsp->h264_h_loop_filter_luma_mbaff =
diff --git a/libavcodec/riscv/h264dsp_rvv.S b/libavcodec/riscv/h264dsp_rvv.S
index 96a8a0a8a3..bbcbf2e4de 100644
--- a/libavcodec/riscv/h264dsp_rvv.S
+++ b/libavcodec/riscv/h264dsp_rvv.S
@@ -26,6 +26,89 @@
 
 #include "libavutil/riscv/asm.S"
 
+func ff_h264_weight_pixels_simple_8_rvv, zve32x
+        csrwi   vxrm, 0
+        sll     a5, a5, a3
+1:
+        vsetvli zero, a6, e32, m4, ta, ma
+        vle8.v  v8, (a0)
+        addi    a2, a2, -1
+        vmv.v.x v16, a5
+        vsetvli zero, zero, e16, m2, ta, ma
+        vzext.vf2   v24, v8
+        vwmaccsu.vx v16, a4, v24
+        vnclip.wx   v16, v16, a3
+        vmax.vx v16, v16, zero
+        vsetvli zero, zero, e8, m1, ta, ma
+        vnclipu.wi  v8, v16, 0
+        vse8.v  v8, (a0)
+        add     a0, a0, a1
+        bnez    a2, 1b
+
+        ret
+endfunc
+
+func ff_h264_weight_pixels_8_rvv, zve32x
+        csrwi   vxrm, 0
+        sll     a5, a5, a3
+1:
+        mv      t0, a0
+        mv      t6, a6
+2:
+        vsetvli t2, a2, e32, m8, ta, ma
+        vlsseg2e8.v v0, (t0), a1
+        addi    t6, t6, -2
+        vmv.v.x v16, a5
+        vmv.v.x v24, a5
+        vsetvli zero, zero, e16, m4, ta, ma
+        vzext.vf2   v8, v0
+        vzext.vf2   v12, v2
+        vwmaccsu.vx v16, a4, v8
+        vwmaccsu.vx v24, a4, v12
+        vnclip.wx   v8, v16, a3
+        vnclip.wx   v12, v24, a3
+        vmax.vx v8, v8, zero
+        vmax.vx v12, v12, zero
+        vsetvli zero, zero, e8, m2, ta, ma
+        vnclipu.wi  v0, v8, 0
+        vnclipu.wi  v2, v12, 0
+        vssseg2e8.v v0, (t0), a1
+        addi    t0, t0, 2
+        bnez    t6, 2b
+
+        mul     t3, a1, t2
+        sub     a2, a2, t2
+        add     a0, a0, t3
+        bnez    a2, 1b
+
+        ret
+endfunc
+
+.irp    w, 16, 8, 4, 2
+func ff_h264_weight_pixels\w\()_8_rvv, zve32x
+        li      a6, \w
+        .if     \w == 16
+        j       ff_h264_weight_pixels_simple_8_rvv
+        .else
+        j       ff_h264_weight_pixels_8_rvv
+        .endif
+endfunc
+.endr
+
+        .global ff_h264_weight_funcs_8_rvv
+        .hidden ff_h264_weight_funcs_8_rvv
+const ff_h264_weight_funcs_8_rvv
+        .irp    w, 16, 8, 4, 2
+#if __riscv_xlen == 32
+        .word   ff_h264_weight_pixels\w\()_8_rvv
+#elif __riscv_xlen == 64
+        .dword  ff_h264_weight_pixels\w\()_8_rvv
+#else
+        .qword  ff_h264_weight_pixels\w\()_8_rvv
+#endif
+        .endr
+endconst
+
         .variant_cc ff_h264_loop_filter_luma_8_rvv
 func ff_h264_loop_filter_luma_8_rvv, zve32x
         # p2: v8, p1: v9, p0: v10, q0: v11, q1: v12, q2: v13