diff --git a/lib_com/ivas_prot.h b/lib_com/ivas_prot.h
index 672b5a7441735223fbdc3befbf75c92c674bcefe..88ddd63edc3393693fd97e07dea2e8a6aa4e14cd 100644
--- a/lib_com/ivas_prot.h
+++ b/lib_com/ivas_prot.h
@@ -1322,6 +1322,10 @@ void stereo_dft_dec(
     const int16_t cross_fade_start_offset,                      /* i  : SPAR mixer delay compensation       */
     const int32_t output_Fs,                                    /* i  : Fs for delay calculation            */
     const int16_t nchan_transport                               /* i  : number of transpor channels         */
+#ifdef FIX_STEREO_474
+    ,
+    const int16_t num_md_sub_frames                             /* i:  number of MD subframes              */
+#endif
 );
 
 void stereo_dft_res_ecu(
@@ -3561,6 +3565,10 @@ void ivas_sba_dirac_stereo_smooth_parameters(
     ivas_spar_md_dec_state_t *hMdDec,                           /* i/o: SPAR MD handle for upmixing             */
     const int16_t cross_fade_start_offset,                      /* i  : SPAR mixer delay compensation           */
     const int32_t output_Fs                                     /* i  : Fs for delay calculation                */
+#ifdef FIX_STEREO_474
+    ,
+    const int16_t num_md_sub_frames                             /* i : number of subframes in mixing matrix  */
+#endif
 );
 
 void ivas_sba2mc_cldfb(
diff --git a/lib_com/options.h b/lib_com/options.h
index de0967fc1a4eaf72aa4a75d8187157ffe645525e..2e144edc5ff8cf60031b59861bd483f6c82d3fb4 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -211,6 +211,8 @@
 
 #define FIX_DTX_428                                     /* FhG: fix for issue 428, crash with DTX and bitrate switching */
 
+#define FIX_STEREO_474                                  /* FhG fix for issue 574, crash with SBA to stereo output at 512 kbps */
+
 /* ################## End DEVELOPMENT switches ######################### */
 /* clang-format on */
 
diff --git a/lib_dec/ivas_cpe_dec.c b/lib_dec/ivas_cpe_dec.c
index 186d1c4c7daade77a393d4542142f78836852a11..3717501c831a671f3a92a58a7938a7ca54974846 100755
--- a/lib_dec/ivas_cpe_dec.c
+++ b/lib_dec/ivas_cpe_dec.c
@@ -405,7 +405,12 @@ ivas_error ivas_cpe_dec(
         }
         else
         {
-            stereo_dft_dec( hCPE->hStereoDft, sts[0], DFT, hCPE->input_mem[1], hCPE->hStereoCng, 0, 0, 0, 0, 0, 0 );
+            stereo_dft_dec( hCPE->hStereoDft, sts[0], DFT, hCPE->input_mem[1], hCPE->hStereoCng, 0, 0, 0, 0, 0, 0
+#ifdef FIX_STEREO_474
+                            ,
+                            MAX_PARAM_SPATIAL_SUBFRAMES
+#endif
+            );
         }
 
         /* synthesis iFFT */
diff --git a/lib_dec/ivas_sba_dirac_stereo_dec.c b/lib_dec/ivas_sba_dirac_stereo_dec.c
index 089492048021527ec3d025ab1d6d3b96e25383df..3ae546193244df0d048fa8579a0048aabf2ef25b 100644
--- a/lib_dec/ivas_sba_dirac_stereo_dec.c
+++ b/lib_dec/ivas_sba_dirac_stereo_dec.c
@@ -693,6 +693,10 @@ void ivas_sba_dirac_stereo_smooth_parameters(
     ivas_spar_md_dec_state_t *hMdDec,      /* i/o: SPAR MD handle for upmixing      */
     const int16_t cross_fade_start_offset, /* i  : SPAR mixer delay compensation    */
     const int32_t output_Fs                /* i  : Fs for delay calculation         */
+#ifdef FIX_STEREO_474
+    ,
+    const int16_t num_md_sub_frames /* i : number of subframes in mixing matrix  */
+#endif
 )
 {
     int16_t i, j, k, i_sf;
@@ -732,6 +736,9 @@ void ivas_sba_dirac_stereo_smooth_parameters(
         float xfade_start_ns;
         int16_t xfade_delay_subframes;
         int16_t i_hist;
+#ifdef FIX_STEREO_474
+        int16_t md_sf;
+#endif
 
         xfade_start_ns = cross_fade_start_offset / (float) output_Fs * 1000000000.f - IVAS_FB_ENC_DELAY_NS;
         xfade_delay_subframes = (int16_t) ( xfade_start_ns / ( FRAME_SIZE_NS / MAX_PARAM_SPATIAL_SUBFRAMES ) );
@@ -742,6 +749,11 @@ void ivas_sba_dirac_stereo_smooth_parameters(
         {
             for ( i_sf = k * 2; i_sf < ( k + 1 ) * 2; i_sf++ )
             {
+
+#ifdef FIX_STEREO_474
+                md_sf = ( num_md_sub_frames == MAX_PARAM_SPATIAL_SUBFRAMES ) ? i_sf : 0;
+#endif
+
                 if ( hStereoDft->first_frame )
                 {
                     for ( i = 0; i < 2; i++ )
@@ -786,7 +798,11 @@ void ivas_sba_dirac_stereo_smooth_parameters(
                     {
                         for ( b = 0; b < hStereoDft->nbands; b++ )
                         {
+#ifdef FIX_STEREO_474
+                            hMdDec->mixer_mat_prev[4][i][j][b] = hMdDec->mixer_mat[i][j][b + md_sf * IVAS_MAX_NUM_BANDS];
+#else
                             hMdDec->mixer_mat_prev[4][i][j][b] = hMdDec->mixer_mat[i][j][b + i_sf * IVAS_MAX_NUM_BANDS];
+#endif
                         }
                     }
                 }
@@ -881,7 +897,12 @@ void ivas_sba_dirac_stereo_dec(
     stereo_dft_dec( hStereoDft, hCPE->hCoreCoder[0], DFT, NULL, NULL, 1 /*st_ivas->sba_dirac_stereo_flag*/, sba_mono_flag,
                     ( st_ivas->hSpar != NULL && !mcmasa ) ? st_ivas->hSpar->hMdDec : NULL,
                     ( st_ivas->hSpar != NULL && !mcmasa ) ? st_ivas->hSpar->hFbMixer->cross_fade_start_offset : 0,
-                    st_ivas->hDecoderConfig->output_Fs, st_ivas->nchan_transport );
+                    st_ivas->hDecoderConfig->output_Fs, st_ivas->nchan_transport
+#ifdef FIX_STEREO_474
+                    ,
+                    ivas_get_spar_dec_md_num_subframes( st_ivas->sba_order, st_ivas->hDecoderConfig->ivas_total_brate )
+#endif
+    );
 
     /* DFT synthesis */
     stereo_dft_dec_synthesize( hCPE, DFT, 0, output[0], output_frame );
diff --git a/lib_dec/ivas_stereo_dft_dec.c b/lib_dec/ivas_stereo_dft_dec.c
index 08ca989f3d4a4f4a82ae02805682b96132513da3..cf5542f1e0dd6e8aaccc22fddcfc2606cc709383 100644
--- a/lib_dec/ivas_stereo_dft_dec.c
+++ b/lib_dec/ivas_stereo_dft_dec.c
@@ -1131,6 +1131,10 @@ void stereo_dft_dec(
     const int16_t cross_fade_start_offset,       /* i  : SPAR mixer delay compensation      */
     const int32_t output_Fs,                     /* i  : Fs for delay calculation           */
     const int16_t nchan_transport                /* i  : number of transpor channels        */
+#ifdef FIX_STEREO_474
+    ,
+    const int16_t num_md_sub_frames /* i:  number of MD subframes              */
+#endif
 )
 {
     int16_t i, k, b, N_div, stop;
@@ -1208,7 +1212,12 @@ void stereo_dft_dec(
             ivas_sba_dirac_stereo_smooth_parameters( hStereoDft,
                                                      hMdDec,
                                                      cross_fade_start_offset,
-                                                     output_Fs );
+                                                     output_Fs
+#ifdef FIX_STEREO_474
+                                                     ,
+                                                     num_md_sub_frames
+#endif
+            );
         }
         else
         {