ffmpeg roll of source to mar 9 version...

patched-ffmpeg-mt/libavformat/avc.c

Index: patched-ffmpeg-mt/libavformat/avc.c
===================================================================
--- patched-ffmpeg-mt/libavformat/avc.c	(revision 41250)
+++ patched-ffmpeg-mt/libavformat/avc.c	(working copy)
@@ -22,8 +22,9 @@
 #include "libavutil/intreadwrite.h"
 #include "avformat.h"
 #include "avio.h"
+#include "avc.h"
 
-const uint8_t *ff_avc_find_startcode(const uint8_t *p, const uint8_t *end)
+static const uint8_t *ff_avc_find_startcode_internal(const uint8_t *p, const uint8_t *end)
 {
     const uint8_t *a = p + 4 - ((intptr_t)p & 3);
 
@@ -39,15 +40,15 @@
         if ((x - 0x01010101) & (~x) & 0x80808080) { // generic
             if (p[1] == 0) {
                 if (p[0] == 0 && p[2] == 1)
-                    return p-1;
+                    return p;
                 if (p[2] == 0 && p[3] == 1)
-                    return p;
+                    return p+1;
             }
             if (p[3] == 0) {
                 if (p[2] == 0 && p[4] == 1)
-                    return p+1;
+                    return p+2;
                 if (p[4] == 0 && p[5] == 1)
-                    return p+2;
+                    return p+3;
             }
         }
     }
@@ -60,6 +61,12 @@
     return end + 3;
 }
 
+const uint8_t *ff_avc_find_startcode(const uint8_t *p, const uint8_t *end){
+    const uint8_t *out= ff_avc_find_startcode_internal(p, end);
+    if(p<out && out<end && !out[-1]) out--;
+    return out;
+}
+
 int ff_avc_parse_nal_units(ByteIOContext *pb, const uint8_t *buf_in, int size)
 {
     const uint8_t *p = buf_in;