diff --git a/libavcodec/eval.c b/libavcodec/eval.c
index 9414bc956c5f3455ca6502e52df10d463124ee3e..bd29d7e48c308a18b6badbe207e409e0f5c8cae7 100644
--- a/libavcodec/eval.c
+++ b/libavcodec/eval.c
@@ -86,7 +86,6 @@ static int8_t si_prefixes['z' - 'E' + 1]={
  */
 static double av_strtod(const char *name, char **tail) {
     double d;
-    int p = 0;
     char *next;
     d = strtod(name, &next);
     /* if parsing succeeded, check for and interpret postfixes */
diff --git a/libavcodec/snow.c b/libavcodec/snow.c
index c154f4ebc75352587430a5a38ae1ef65e11f757d..e3497ef07d3ae0c813c68cbc58eaedde40879915 100644
--- a/libavcodec/snow.c
+++ b/libavcodec/snow.c
@@ -2938,7 +2938,6 @@ static int get_block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index, con
     Plane *p= &s->plane[plane_index];
     const int block_size = MB_SIZE >> s->block_max_depth;
     const int block_w    = plane_index ? block_size/2 : block_size;
-    const uint8_t *obmc  = plane_index ? obmc_tab[s->block_max_depth+1] : obmc_tab[s->block_max_depth];
     const int obmc_stride= plane_index ? block_size : 2*block_size;
     const int ref_stride= s->current_picture.linesize[plane_index];
     uint8_t *dst= s->current_picture.data[plane_index];
@@ -3041,7 +3040,6 @@ static int get_4block_rd(SnowContext *s, int mb_x, int mb_y, int plane_index){
     uint8_t *src= s-> input_picture.data[plane_index];
     static const DWTELEM zero_dst[4096]; //FIXME
     const int b_stride = s->b_width << s->block_max_depth;
-    const int b_height = s->b_height<< s->block_max_depth;
     const int w= p->width;
     const int h= p->height;
     int distortion= 0;
diff --git a/libavcodec/vc1.c b/libavcodec/vc1.c
index 21a98902f1f72fbcac87e31eafe0bec3f29afb1d..f46d148fd0249519f299d117fe12e64f8222c61c 100644
--- a/libavcodec/vc1.c
+++ b/libavcodec/vc1.c
@@ -2108,8 +2108,6 @@ static always_inline int scale_mv(int value, int bfrac, int inv, int qs)
  */
 static inline void vc1_b_mc(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mode)
 {
-    int t;
-
     if(v->use_ic) {
         v->mv_mode2 = v->mv_mode;
         v->mv_mode = MV_PMODE_INTENSITY_COMP;
diff --git a/libavcodec/vmnc.c b/libavcodec/vmnc.c
index 739962a38213e41e399838a09b5d5f6428afd929..07e2b3cf15d361ff42d57fe962d200d2d81025eb 100644
--- a/libavcodec/vmnc.c
+++ b/libavcodec/vmnc.c
@@ -115,7 +115,7 @@ static void load_cursor(VmncContext *c, uint8_t *src)
 
 static void put_cursor(uint8_t *dst, int stride, VmncContext *c, int dx, int dy)
 {
-    int i, j, t;
+    int i, j;
     int w, h, x, y;
     w = c->cur_w;
     if(c->width < c->cur_x + c->cur_w) w = c->width - c->cur_x;
diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c
index d8f6270157d519a192d4345c69f766e7df63c1af..594b842b8b671e696281b52aa7902589a1c8aae7 100644
--- a/libavcodec/vp3.c
+++ b/libavcodec/vp3.c
@@ -607,7 +607,7 @@ static void init_dequantizer(Vp3DecodeContext *s)
 {
     int ac_scale_factor = s->coded_ac_scale_factor[s->quality_index];
     int dc_scale_factor = s->coded_dc_scale_factor[s->quality_index];
-    int i, j, plane, inter, qri, bmi, bmj, qistart;
+    int i, plane, inter, qri, bmi, bmj, qistart;
 
     debug_vp3("  vp3: initializing dequantization tables\n");
 
diff --git a/libavformat/rm.c b/libavformat/rm.c
index ceae5c3c3060797c371d9e0e7fc83b864ff629e9..ba1cd6699a194e807d35dd8b01fd2cd89ae07d61 100644
--- a/libavformat/rm.c
+++ b/libavformat/rm.c
@@ -645,7 +645,7 @@ static int rm_read_header(AVFormatContext *s, AVFormatParameters *ap)
     unsigned int tag, v;
     int tag_size, size, codec_data_size, i;
     int64_t codec_pos;
-    unsigned int h263_hack_version, start_time, duration;
+    unsigned int start_time, duration;
     char buf[128];
     int flags = 0;