diff --git a/libavcodec/ppc/vc1dsp_altivec.c b/libavcodec/ppc/vc1dsp_altivec.c
index a2f55f2d..d276fa7 100644
--- a/libavcodec/ppc/vc1dsp_altivec.c
+++ b/libavcodec/ppc/vc1dsp_altivec.c
@@ -129,7 +129,8 @@ do { \

 /** Do inverse transform on 8x8 block
 */
-static void vc1_inv_trans_8x8_altivec(DCTELEM block[64])
+static void vc1_inv_trans_8x8_altivec_generic(DCTELEM block[64],
+                                              int sign, int rangered)
 {
     vector signed short src0, src1, src2, src3, src4, src5, src6, src7;
     vector signed int s0, s1, s2, s3, s4, s5, s6, s7;
@@ -143,7 +144,9 @@ static void vc1_inv_trans_8x8_altivec(DCTELEM block[64])
     const vector unsigned int vec_2 = vec_splat_u32(2);
     const vector  signed int vec_1s = vec_splat_s32(1);
     const vector unsigned int vec_1 = vec_splat_u32(1);
-
+    const vector unsigned short rangered_shift = vec_splat_u16(1);
+    const vector unsigned short unsigned_bias = vec_sl(vec_splat_u16(4),
+                                                       vec_splat_u16(4));

     src0 = vec_ld(  0, block);
     src1 = vec_ld( 16, block);
@@ -214,6 +217,27 @@ static void vc1_inv_trans_8x8_altivec(DCTELEM block[64])
     src6 = vec_pack(sE, s6);
     src7 = vec_pack(sF, s7);

+    if (rangered) {
+        if (!sign) {
+            vec_sub(src0, unsigned_bias);
+            vec_sub(src1, unsigned_bias);
+            vec_sub(src2, unsigned_bias);
+            vec_sub(src3, unsigned_bias);
+            vec_sub(src4, unsigned_bias);
+            vec_sub(src5, unsigned_bias);
+            vec_sub(src6, unsigned_bias);
+            vec_sub(src7, unsigned_bias);
+        }
+        vec_sl(src0, rangered_shift);
+        vec_sl(src1, rangered_shift);
+        vec_sl(src2, rangered_shift);
+        vec_sl(src3, rangered_shift);
+        vec_sl(src4, rangered_shift);
+        vec_sl(src5, rangered_shift);
+        vec_sl(src6, rangered_shift);
+        vec_sl(src7, rangered_shift);
+    }
+
     vec_st(src0,  0, block);
     vec_st(src1, 16, block);
     vec_st(src2, 32, block);