diff --git a/codecs.h b/codecs.h
index c9eb5fb..f51649b 100644
--- a/codecs.h
+++ b/codecs.h
@@ -32,13 +32,13 @@ typedef struct
 
 const mpeg2_level_t mpeg2_levels[] =
 {
-    { MPEG2_LEVEL_LOW,      MPEG2_PROFILE_MAIN,   4000000,  475136 },
-    { MPEG2_LEVEL_MAIN,     MPEG2_PROFILE_SIMPLE, 15000000, 1835008 },
-    { MPEG2_LEVEL_MAIN,     MPEG2_PROFILE_MAIN,   15000000, 1835008 },
-    { MPEG2_LEVEL_MAIN,     MPEG2_PROFILE_422,    50000000, 9437184 },
-    { MPEG2_LEVEL_HIGH_1440,MPEG2_PROFILE_MAIN,   60000000, 7340732 },
-    { MPEG2_LEVEL_HIGH,     MPEG2_PROFILE_MAIN,   80000000, 9781248 },
-    { MPEG2_LEVEL_HIGHP,    MPEG2_PROFILE_MAIN,   80000000, 9781248 },
+    { LIBMPEGTS_MPEG2_LEVEL_LOW,      LIBMPEGTS_MPEG2_PROFILE_MAIN,   4000000,  475136 },
+    { LIBMPEGTS_MPEG2_LEVEL_MAIN,     LIBMPEGTS_MPEG2_PROFILE_SIMPLE, 15000000, 1835008 },
+    { LIBMPEGTS_MPEG2_LEVEL_MAIN,     LIBMPEGTS_MPEG2_PROFILE_MAIN,   15000000, 1835008 },
+    { LIBMPEGTS_MPEG2_LEVEL_MAIN,     LIBMPEGTS_MPEG2_PROFILE_422,    50000000, 9437184 },
+    { LIBMPEGTS_MPEG2_LEVEL_HIGH_1440,LIBMPEGTS_MPEG2_PROFILE_MAIN,   60000000, 7340732 },
+    { LIBMPEGTS_MPEG2_LEVEL_HIGH,     LIBMPEGTS_MPEG2_PROFILE_MAIN,   80000000, 9781248 },
+    { LIBMPEGTS_MPEG2_LEVEL_HIGHP,    LIBMPEGTS_MPEG2_PROFILE_MAIN,   80000000, 9781248 },
     { 0 }
 };
 
diff --git a/libmpegts.c b/libmpegts.c
index f69e477..3dacce4 100644
--- a/libmpegts.c
+++ b/libmpegts.c
@@ -1066,12 +1066,12 @@ int ts_setup_mpegvideo_stream( ts_writer_t *w, int pid, int level, int profile,
 
     if( stream->stream_format == LIBMPEGTS_VIDEO_MPEG2 )
     {
-        if( level < MPEG2_LEVEL_LOW || level > MPEG2_LEVEL_HIGHP )
+        if( level < LIBMPEGTS_MPEG2_LEVEL_LOW || level > LIBMPEGTS_MPEG2_LEVEL_HIGHP )
         {
             fprintf( stderr, "Invalid MPEG-2 Level\n" );
             return -1;
         }
-        if( profile < MPEG2_PROFILE_SIMPLE || profile > MPEG2_PROFILE_422 )
+        if( profile < LIBMPEGTS_MPEG2_PROFILE_SIMPLE || profile > LIBMPEGTS_MPEG2_PROFILE_422 )
         {
             fprintf( stderr, "Invalid MPEG-2 Profile\n" );
             return -1;
@@ -1132,7 +1132,7 @@ int ts_setup_mpegvideo_stream( ts_writer_t *w, int pid, int level, int profile,
         stream->rx = 1.2 * mpeg2_levels[level_idx].bitrate;
         stream->eb.buf_size = vbv_bufsize;
 
-        if( level == MPEG2_LEVEL_LOW || level == MPEG2_LEVEL_MAIN )
+        if( level == LIBMPEGTS_MPEG2_LEVEL_LOW || level == LIBMPEGTS_MPEG2_LEVEL_MAIN )
         {
             stream->mb.buf_size = bs_mux + bs_oh + mpeg2_levels[level_idx].vbv - vbv_bufsize;
             stream->rbx = mpeg2_levels[level_idx].bitrate;
diff --git a/libmpegts.h b/libmpegts.h
index 29f6d4e..a959de2 100644
--- a/libmpegts.h
+++ b/libmpegts.h
@@ -146,19 +146,19 @@ enum ts_type_t
 /* MPEG-2 Levels */
 enum mpeg2_level_t
 {
-    MPEG2_LEVEL_LOW = 1,
-    MPEG2_LEVEL_MAIN,
-    MPEG2_LEVEL_HIGH_1440,
-    MPEG2_LEVEL_HIGH,
-    MPEG2_LEVEL_HIGHP,
+    LIBMPEGTS_MPEG2_LEVEL_LOW = 1,
+    LIBMPEGTS_MPEG2_LEVEL_MAIN,
+    LIBMPEGTS_MPEG2_LEVEL_HIGH_1440,
+    LIBMPEGTS_MPEG2_LEVEL_HIGH,
+    LIBMPEGTS_MPEG2_LEVEL_HIGHP,
 };
 
 /* MPEG-2 Profiles */
 enum mpeg2_profile_t
 {
-    MPEG2_PROFILE_SIMPLE,
-    MPEG2_PROFILE_MAIN,
-    MPEG2_PROFILE_422,
+    LIBMPEGTS_MPEG2_PROFILE_SIMPLE,
+    LIBMPEGTS_MPEG2_PROFILE_MAIN,
+    LIBMPEGTS_MPEG2_PROFILE_422,
 };
 
 /* AVC Profiles */