diff --git a/ffmpeg.c b/ffmpeg.c
index cdc265328c..31a8acbb5b 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -86,7 +86,7 @@ static AVImageFormat *image_format;
 static int frame_width  = 0;
 static int frame_height = 0;
 static float frame_aspect_ratio = 0;
-static enum PixelFormat frame_pix_fmt = PIX_FMT_YUV420P;
+static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
 static int frame_padtop  = 0;
 static int frame_padbottom = 0;
 static int frame_padleft  = 0;
diff --git a/libavcodec/asv1.c b/libavcodec/asv1.c
index 4ab2518ab7..13976db619 100644
--- a/libavcodec/asv1.c
+++ b/libavcodec/asv1.c
@@ -557,6 +557,7 @@ static int decode_init(AVCodecContext *avctx){
     common_init(avctx);
     init_vlcs(a);
     ff_init_scantable(a->dsp.idct_permutation, &a->scantable, scantab);
+    avctx->pix_fmt= PIX_FMT_YUV420P;
 
     a->inv_qscale= ((uint8_t*)avctx->extradata)[0];
     if(a->inv_qscale == 0){
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 8e6b2c0738..9efb95ee0a 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -17,7 +17,7 @@ extern "C" {
 
 #define FFMPEG_VERSION_INT     0x000409
 #define FFMPEG_VERSION         "0.4.9-pre1"
-#define LIBAVCODEC_BUILD       4752
+#define LIBAVCODEC_BUILD       4753
 
 #define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
 #define LIBAVCODEC_VERSION     FFMPEG_VERSION
@@ -206,6 +206,7 @@ enum CodecType {
  * to run on the IBM VGA graphics adapter use 6-bit palette components.
  */
 enum PixelFormat {
+    PIX_FMT_NONE= -1,
     PIX_FMT_YUV420P,   ///< Planar YUV 4:2:0 (1 Cr & Cb sample per 2x2 Y samples)
     PIX_FMT_YUV422,    ///< Packed pixel, Y0 Cb Y1 Cr 
     PIX_FMT_RGB24,     ///< Packed pixel, 3 bytes per pixel, RGBRGB...
diff --git a/libavcodec/rv10.c b/libavcodec/rv10.c
index c5068c5685..8183391e93 100644
--- a/libavcodec/rv10.c
+++ b/libavcodec/rv10.c
@@ -560,7 +560,9 @@ static int rv10_decode_init(AVCodecContext *avctx)
     if(avctx->debug & FF_DEBUG_PICT_INFO){
         av_log(avctx, AV_LOG_DEBUG, "ver:%X ver0:%X\n", avctx->sub_id, avctx->extradata_size >= 4 ? ((uint32_t*)avctx->extradata)[0] : -1);
     }
-    
+
+    avctx->pix_fmt = PIX_FMT_YUV420P;
+
     if (MPV_common_init(s) < 0)
         return -1;
 
@@ -576,8 +578,6 @@ static int rv10_decode_init(AVCodecContext *avctx)
                  rv_chrom_code, 2, 2, 1);
         done = 1;
     }
-    
-    avctx->pix_fmt = PIX_FMT_YUV420P;
 
     return 0;
 }
diff --git a/libavcodec/snow.c b/libavcodec/snow.c
index a79cb1ad6e..e34cbac0f3 100644
--- a/libavcodec/snow.c
+++ b/libavcodec/snow.c
@@ -3652,6 +3652,8 @@ static int decode_init(AVCodecContext *avctx)
 {
     SnowContext *s = avctx->priv_data;
     int block_size;
+    
+    avctx->pix_fmt= PIX_FMT_YUV420P;
 
     common_init(avctx);
     
diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index afff2f98a8..f675ce8831 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -459,6 +459,7 @@ void avcodec_get_context_defaults(AVCodecContext *s){
     s->profile= FF_PROFILE_UNKNOWN;
     s->level= FF_LEVEL_UNKNOWN;
     s->me_penalty_compensation= 256;
+    s->pix_fmt= PIX_FMT_NONE;
     
     s->intra_quant_bias= FF_DEFAULT_QUANT_BIAS;
     s->inter_quant_bias= FF_DEFAULT_QUANT_BIAS;
diff --git a/libavformat/img2.c b/libavformat/img2.c
index 0a53a5b824..0d58604beb 100644
--- a/libavformat/img2.c
+++ b/libavformat/img2.c
@@ -222,7 +222,7 @@ static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
         st->codec.codec_type = CODEC_TYPE_VIDEO;
         st->codec.codec_id = av_str2id(img_tags, s->path);
     }
-    if(st->codec.codec_type == CODEC_TYPE_VIDEO && ap->pix_fmt)
+    if(st->codec.codec_type == CODEC_TYPE_VIDEO && ap->pix_fmt != PIX_FMT_NONE)
         st->codec.pix_fmt = ap->pix_fmt;
 
     return 0;
diff --git a/libavformat/utils.c b/libavformat/utils.c
index 97b060daa6..cb43df4ece 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -1682,7 +1682,7 @@ static int has_codec_parameters(AVCodecContext *enc)
         val = enc->sample_rate;
         break;
     case CODEC_TYPE_VIDEO:
-        val = enc->width;
+        val = enc->width && enc->pix_fmt != PIX_FMT_NONE;
         break;
     default:
         val = 1;
@@ -1704,6 +1704,8 @@ static int try_decode_frame(AVStream *st, const uint8_t *data, int size)
     ret = avcodec_open(&st->codec, codec);
     if (ret < 0)
         return ret;
+
+  if(!has_codec_parameters(&st->codec)){
     switch(st->codec.codec_type) {
     case CODEC_TYPE_VIDEO:
         ret = avcodec_decode_video(&st->codec, &picture, 
@@ -1720,6 +1722,7 @@ static int try_decode_frame(AVStream *st, const uint8_t *data, int size)
     default:
         break;
     }
+  }
  fail:
     avcodec_close(&st->codec);
     return ret;
@@ -1739,6 +1742,7 @@ static int try_decode_frame(AVStream *st, const uint8_t *data, int size)
  *
  * @param ic media file handle
  * @return >=0 if OK. AVERROR_xxx if error.  
+ * @todo let user decide somehow what information is needed so we dont waste time geting stuff the user doesnt need
  */
 int av_find_stream_info(AVFormatContext *ic)
 {
@@ -1841,7 +1845,7 @@ int av_find_stream_info(AVFormatContext *ic)
            decompress the frame. We try to avoid that in most cases as
            it takes longer and uses more memory. For MPEG4, we need to
            decompress for Quicktime. */
-        if (!has_codec_parameters(&st->codec) &&
+        if (!has_codec_parameters(&st->codec) /*&&
             (st->codec.codec_id == CODEC_ID_FLV1 ||
              st->codec.codec_id == CODEC_ID_H264 ||
              st->codec.codec_id == CODEC_ID_H263 ||
@@ -1855,7 +1859,7 @@ int av_find_stream_info(AVFormatContext *ic)
              st->codec.codec_id == CODEC_ID_PBM ||
              st->codec.codec_id == CODEC_ID_PPM ||
              st->codec.codec_id == CODEC_ID_SHORTEN ||
-             (st->codec.codec_id == CODEC_ID_MPEG4 && !st->need_parsing)))
+             (st->codec.codec_id == CODEC_ID_MPEG4 && !st->need_parsing))*/)
             try_decode_frame(st, pkt->data, pkt->size);
         
         if (st->codec_info_duration >= MAX_STREAM_DURATION) {
diff --git a/tests/regression.sh b/tests/regression.sh
index 853b335a7e..e624b68d26 100755
--- a/tests/regression.sh
+++ b/tests/regression.sh
@@ -290,7 +290,7 @@ file=${outfile}huffyuv.avi
 do_ffmpeg $file -y -f pgmyuv -i $raw_src -an -vcodec huffyuv -pix_fmt yuv422p $file
 
 # huffyuv decoding
-do_ffmpeg $raw_dst -y -i $file -f rawvideo -strict -1 $raw_dst
+do_ffmpeg $raw_dst -y -i $file -f rawvideo -strict -1 -pix_fmt yuv420p $raw_dst
 fi
 
 ###################################
@@ -370,7 +370,7 @@ file=${outfile}mjpeg.avi
 do_ffmpeg $file -y -qscale 10 -f pgmyuv -i $raw_src -an -vcodec mjpeg -pix_fmt yuvj420p $file
 
 # mjpeg decoding
-do_ffmpeg $raw_dst -y -i $file -f rawvideo $raw_dst 
+do_ffmpeg $raw_dst -y -i $file -f rawvideo -pix_fmt yuv420p $raw_dst 
 fi
 
 ###################################
@@ -467,7 +467,7 @@ file=${outfile}svq1.mov
 do_ffmpeg $file -y -f pgmyuv -i $raw_src -an -vcodec svq1 -qscale 3 -pix_fmt yuv410p $file
 
 # svq1 decoding
-do_ffmpeg $raw_dst -y -i $file -f rawvideo $raw_dst 
+do_ffmpeg $raw_dst -y -i $file -f rawvideo -pix_fmt yuv420p $raw_dst 
 fi
 
 ###################################