Fix reading VDR files (broken since r19000).

Originally committed as revision 20017 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/avformat.h

@@ -448,7 +448,7 @@ typedef struct AVStream {
      * Number of packets to buffer for codec probing
      * NOT PART OF PUBLIC API
      */
-#define MAX_PROBE_PACKETS 100
+#define MAX_PROBE_PACKETS 2500
     int probe_packets;
 
     /**
@@ -649,7 +649,7 @@ typedef struct AVFormatContext {
      * Remaining size available for raw_packet_buffer, in bytes.
      * NOT PART OF PUBLIC API
      */
-#define RAW_PACKET_BUFFER_SIZE 32000
+#define RAW_PACKET_BUFFER_SIZE 2500000
     int raw_packet_buffer_remaining_size;
 } AVFormatContext;