diff --git a/libavformat/oggdec.c b/libavformat/oggdec.c
index ceec6442b41a8559869c6dff04bf16137f871faf..5bca3d156bf4f48e1765dc5fcbee6d847555468e 100644
--- a/libavformat/oggdec.c
+++ b/libavformat/oggdec.c
@@ -38,15 +38,15 @@
 #define DECODER_BUFFER_SIZE MAX_PAGE_SIZE
 
 static const ogg_codec_t * const ogg_codecs[] = {
-    &speex_codec,
-    &vorbis_codec,
-    &theora_codec,
-    &flac_codec,
-    &old_flac_codec,
-    &ogm_video_codec,
-    &ogm_audio_codec,
-    &ogm_text_codec,
-    &ogm_old_codec,
+    &ff_speex_codec,
+    &ff_vorbis_codec,
+    &ff_theora_codec,
+    &ff_flac_codec,
+    &ff_old_flac_codec,
+    &ff_ogm_video_codec,
+    &ff_ogm_audio_codec,
+    &ff_ogm_text_codec,
+    &ff_ogm_old_codec,
     NULL
 };
 
diff --git a/libavformat/oggdec.h b/libavformat/oggdec.h
index 1be3fc194372a49ba46c866dbc668523cb891f83..997acdd4be55777f54f8a7bf5c19b7333bf75588 100644
--- a/libavformat/oggdec.h
+++ b/libavformat/oggdec.h
@@ -75,15 +75,15 @@ typedef struct ogg {
 #define OGG_FLAG_BOS  2
 #define OGG_FLAG_EOS  4
 
-extern const ogg_codec_t flac_codec;
-extern const ogg_codec_t ogm_audio_codec;
-extern const ogg_codec_t ogm_old_codec;
-extern const ogg_codec_t ogm_text_codec;
-extern const ogg_codec_t ogm_video_codec;
-extern const ogg_codec_t old_flac_codec;
-extern const ogg_codec_t speex_codec;
-extern const ogg_codec_t theora_codec;
-extern const ogg_codec_t vorbis_codec;
+extern const ogg_codec_t ff_flac_codec;
+extern const ogg_codec_t ff_ogm_audio_codec;
+extern const ogg_codec_t ff_ogm_old_codec;
+extern const ogg_codec_t ff_ogm_text_codec;
+extern const ogg_codec_t ff_ogm_video_codec;
+extern const ogg_codec_t ff_old_flac_codec;
+extern const ogg_codec_t ff_speex_codec;
+extern const ogg_codec_t ff_theora_codec;
+extern const ogg_codec_t ff_vorbis_codec;
 
 extern int vorbis_comment(AVFormatContext *ms, uint8_t *buf, int size);
 
diff --git a/libavformat/oggparseflac.c b/libavformat/oggparseflac.c
index 7a0084e7fbeb17ea43da2c62bcfe9f5d342cbda2..28c6ce365f6cea9d9b36b124b549f819764b8692 100644
--- a/libavformat/oggparseflac.c
+++ b/libavformat/oggparseflac.c
@@ -85,13 +85,13 @@ old_flac_header (AVFormatContext * s, int idx)
     return 0;
 }
 
-const ogg_codec_t flac_codec = {
+const ogg_codec_t ff_flac_codec = {
     .magic = "\177FLAC",
     .magicsize = 5,
     .header = flac_header
 };
 
-const ogg_codec_t old_flac_codec = {
+const ogg_codec_t ff_old_flac_codec = {
     .magic = "fLaC",
     .magicsize = 4,
     .header = old_flac_header
diff --git a/libavformat/oggparseogm.c b/libavformat/oggparseogm.c
index 72a3aed98f9d2dbc745daf5023a9acb2f992cc88..6a80dc307a06a78d3e9887d3ff785bfe4250d0ca 100644
--- a/libavformat/oggparseogm.c
+++ b/libavformat/oggparseogm.c
@@ -149,28 +149,28 @@ ogm_packet(AVFormatContext *s, int idx)
     return 0;
 }
 
-const ogg_codec_t ogm_video_codec = {
+const ogg_codec_t ff_ogm_video_codec = {
     .magic = "\001video",
     .magicsize = 6,
     .header = ogm_header,
     .packet = ogm_packet
 };
 
-const ogg_codec_t ogm_audio_codec = {
+const ogg_codec_t ff_ogm_audio_codec = {
     .magic = "\001audio",
     .magicsize = 6,
     .header = ogm_header,
     .packet = ogm_packet
 };
 
-const ogg_codec_t ogm_text_codec = {
+const ogg_codec_t ff_ogm_text_codec = {
     .magic = "\001text",
     .magicsize = 5,
     .header = ogm_header,
     .packet = ogm_packet
 };
 
-const ogg_codec_t ogm_old_codec = {
+const ogg_codec_t ff_ogm_old_codec = {
     .magic = "\001Direct Show Samples embedded in Ogg",
     .magicsize = 35,
     .header = ogm_dshow_header,
diff --git a/libavformat/oggparsespeex.c b/libavformat/oggparsespeex.c
index 1612f2e632c7ac08ff33656ab6d12317239fb8df..c78379911f95539aff0dd9109a2de7adc897be64 100644
--- a/libavformat/oggparsespeex.c
+++ b/libavformat/oggparsespeex.c
@@ -54,7 +54,7 @@ static int speex_header(AVFormatContext *s, int idx) {
     return 0;
 }
 
-const ogg_codec_t speex_codec = {
+const ogg_codec_t ff_speex_codec = {
     .magic = "Speex   ",
     .magicsize = 8,
     .header = speex_header
diff --git a/libavformat/oggparsetheora.c b/libavformat/oggparsetheora.c
index d1a4fdf9984e622ab51ef1c6ff8dce9522ab930c..5920e1cdcfccd7b558e8b01913f641f4bc781536 100644
--- a/libavformat/oggparsetheora.c
+++ b/libavformat/oggparsetheora.c
@@ -130,7 +130,7 @@ theora_gptopts(AVFormatContext *ctx, int idx, uint64_t gp)
     return iframe + pframe;
 }
 
-const ogg_codec_t theora_codec = {
+const ogg_codec_t ff_theora_codec = {
     .magic = "\200theora",
     .magicsize = 7,
     .header = theora_header,
diff --git a/libavformat/oggparsevorbis.c b/libavformat/oggparsevorbis.c
index a773847f826efc171dd2aa9c106c49d765599435..5c42475412f3be93baabdb54df216380c8f0e226 100644
--- a/libavformat/oggparsevorbis.c
+++ b/libavformat/oggparsevorbis.c
@@ -219,7 +219,7 @@ vorbis_header (AVFormatContext * s, int idx)
     return os->seq < 3;
 }
 
-const ogg_codec_t vorbis_codec = {
+const ogg_codec_t ff_vorbis_codec = {
     .magic = "\001vorbis",
     .magicsize = 7,
     .header = vorbis_header