diff --git a/demuxer.h b/demuxer.h
index 37530f2050..b2dc640d1b 100644
--- a/demuxer.h
+++ b/demuxer.h
@@ -1,6 +1,6 @@
 
-#define MAX_PACKS 2048
-#define MAX_PACK_BYTES 0x400000
+#define MAX_PACKS 4096
+#define MAX_PACK_BYTES 0x800000
 
 #define DEMUXER_TYPE_UNKNOWN 0
 #define DEMUXER_TYPE_MPEG_ES 1