diff --git a/libeplayer3/container/buff_ffmpeg.c b/libeplayer3/container/buff_ffmpeg.c
index 43bc82a..8229380 100644
--- a/libeplayer3/container/buff_ffmpeg.c
+++ b/libeplayer3/container/buff_ffmpeg.c
@@ -188,7 +188,7 @@ void getfillerMutex(const char *filename __attribute__((unused)), const char *fu
 	ffmpeg_printf(100, "::%d received mutex\n", line);
 }
 
-void releasefillerMutex(const char *filename __attribute__((unused)), const const char *function __attribute__((unused)), int line __attribute__((unused)))
+void releasefillerMutex(const char *filename __attribute__((unused)), const char *function __attribute__((unused)), int line __attribute__((unused)))
 {
 	pthread_mutex_unlock(&fillermutex);
 
diff --git a/libeplayer3/container/container_ffmpeg.c b/libeplayer3/container/container_ffmpeg.c
index 9467513..564a57b 100644
--- a/libeplayer3/container/container_ffmpeg.c
+++ b/libeplayer3/container/container_ffmpeg.c
@@ -158,7 +158,7 @@ static void getMutex(const char *filename __attribute__((unused)), const char *f
 	ffmpeg_printf(100, "::%d received mutex\n", line);
 }
 
-static void releaseMutex(const char *filename __attribute__((unused)), const const char *function __attribute__((unused)), int32_t line __attribute__((unused)))
+static void releaseMutex(const char *filename __attribute__((unused)), const char *function __attribute__((unused)), int32_t line __attribute__((unused)))
 {
 	pthread_mutex_unlock(&mutex);
 
diff --git a/libeplayer3/container/flv2mpeg4_ffmpeg.c b/libeplayer3/container/flv2mpeg4_ffmpeg.c
index cc00144..bee39f2 100644
--- a/libeplayer3/container/flv2mpeg4_ffmpeg.c
+++ b/libeplayer3/container/flv2mpeg4_ffmpeg.c
@@ -17,7 +17,7 @@ typedef struct
 } Flv2Mpeg4Context;
 
 
-static int flv2mpeg4_context_write_packet_cb(void *usr_data, int keyframe, int pts, const uint8_t *buf, int size)
+static int flv2mpeg4_context_write_packet_cb(void *usr_data, int keyframe __attribute__((unused)), int pts __attribute__((unused)), const uint8_t *buf, int size)
 {
 	Flv2Mpeg4Context *ctx = usr_data;
 	if (!ctx)
@@ -46,7 +46,7 @@ static int flv2mpeg4_context_write_packet_cb(void *usr_data, int keyframe, int p
 	return 0;
 }
 
-static int flv2mpeg4_context_write_extradata_cb(void *usr_data, int width, int height, int bitrate, const uint8_t *extradata, int extradatasize)
+static int flv2mpeg4_context_write_extradata_cb(void *usr_data, int width __attribute__((unused)), int height __attribute__((unused)), int bitrate __attribute__((unused)), const uint8_t *extradata, int extradatasize)
 {
 	Flv2Mpeg4Context *ctx = usr_data;
 	if (!ctx)