ffmpeg roll of source to mar 9 version...

patched-ffmpeg-mt/libavcodec/mpeg12.c

 /*
  * MPEG-1/2 decoder
  * Copyright (c) 2000,2001 Fabrice Bellard
  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
@@ skipping 2217 matching lines @@
                 pc->frame_start_found= 0;
             if(pc->frame_start_found<4 && state == EXT_START_CODE)
                 pc->frame_start_found++;
             if(pc->frame_start_found == 4 && (state&0xFFFFFF00) == 0x100){
                 if(state < SLICE_MIN_START_CODE || state > SLICE_MAX_START_CODE){
                     pc->frame_start_found=0;
                     pc->state=-1;
                     return i-3;
                 }
             }
-            if(s && state == PICTURE_START_CODE){
+            if(pc->frame_start_found == 0 && s && state == PICTURE_START_CODE){
                 ff_fetch_timestamp(s, i-3, 1);
             }
         }
     }
     pc->state= state;
     return END_NOT_FOUND;
 }
 
 static int decode_chunks(AVCodecContext *avctx,
                              AVFrame *picture, int *data_size,
@@ skipping 382 matching lines @@
     mpeg_decode_init,
     NULL,
     mpeg_decode_end,
     mpeg_decode_frame,
     CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_HWACCEL_VDPAU | CODEC_CAP_DELAY,
     .flush= flush,
     .long_name = NULL_IF_CONFIG_SMALL("MPEG-1 video (VDPAU acceleration)"),
 };
 #endif