diff --git a/libavcodec/h264.c b/libavcodec/h264.c
index 20aed27fd1ceddca0fb7a4f2dae0a5e2677c1d72..c3ef3f0110e1c879d32d6cde632df40d623fbe05 100644
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@@ -3925,7 +3925,14 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
             break;
         case NAL_SPS:
             init_get_bits(&s->gb, ptr, bit_length);
-            ff_h264_decode_seq_parameter_set(h);
+            if (ff_h264_decode_seq_parameter_set(h) < 0 &&
+                h->is_avc && (nalsize != consumed) && nalsize) {
+                av_log(h->s.avctx, AV_LOG_DEBUG, "SPS decoding failure, "
+                       "try parsing the coomplete NAL\n");
+                init_get_bits(&s->gb, buf + buf_index + 1 - consumed,
+                              8 * (nalsize - 1));
+                ff_h264_decode_seq_parameter_set(h);
+            }
 
             if (s->flags& CODEC_FLAG_LOW_DELAY ||
                 (h->sps.bitstream_restriction_flag && !h->sps.num_reorder_frames))
diff --git a/libavcodec/h264_ps.c b/libavcodec/h264_ps.c
index 287702c7c4fe392f4f28aa131d8845da02d25176..276eb77d1dafffdc545c145298897b57c60a00f2 100644
--- a/libavcodec/h264_ps.c
+++ b/libavcodec/h264_ps.c
@@ -228,7 +228,6 @@ static inline int decode_vui_parameters(H264Context *h, SPS *sps){
         get_ue_golomb(&s->gb); /*max_dec_frame_buffering*/
 
         if (get_bits_left(&s->gb) < 0) {
-            av_log(h->s.avctx, AV_LOG_ERROR, "Overread VUI by %d bits\n", -get_bits_left(&s->gb));
             sps->num_reorder_frames=0;
             sps->bitstream_restriction_flag= 0;
         }
@@ -238,6 +237,10 @@ static inline int decode_vui_parameters(H264Context *h, SPS *sps){
             return -1;
         }
     }
+    if (get_bits_left(&s->gb) < 0) {
+        av_log(h->s.avctx, AV_LOG_ERROR, "Overread VUI by %d bits\n", -get_bits_left(&s->gb));
+        return AVERROR_INVALIDDATA;
+    }
 
     return 0;
 }