diff --git a/MAINTAINERS b/MAINTAINERS
index beff7bb76e..5b009abd34 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -80,7 +80,7 @@ Generic Parts:
     eval.c                              Michael Niedermayer
   audio and video frame extraction:
     parser.c
-  bitsream reading:
+  bitstream reading:
     bitstream.c, bitstream.h            Michael Niedermayer
   CABAC:
     cabac.h, cabac.c                    Michael Niedermayer
diff --git a/libavcodec/i386/dsputil_mmx.c b/libavcodec/i386/dsputil_mmx.c
index 23a717acdd..c920e3f180 100644
--- a/libavcodec/i386/dsputil_mmx.c
+++ b/libavcodec/i386/dsputil_mmx.c
@@ -175,7 +175,7 @@ static const uint64_t ff_pb_FC attribute_used __attribute__ ((aligned(8))) = 0xF
 /* 3Dnow specific */
 
 #define DEF(x) x ## _3dnow
-/* for Athlons PAVGUSB is prefered */
+/* for Athlons PAVGUSB is preferred */
 #define PAVGB "pavgusb"
 
 #include "dsputil_mmx_avg.h"
diff --git a/libavcodec/mpegaudiodec.c b/libavcodec/mpegaudiodec.c
index d64c9f6115..78f4ac0e29 100644
--- a/libavcodec/mpegaudiodec.c
+++ b/libavcodec/mpegaudiodec.c
@@ -2289,7 +2289,7 @@ static int mp_decode_layer3(MPADecodeContext *s)
         for(ch=0;ch<s->nb_channels;ch++) {
             g = &granules[ch][gr];
             if(get_bits_count(&s->gb)<0){
-                av_log(NULL, AV_LOG_ERROR, "mdb:%d, lastbuf:%d skiping granule %d\n",
+                av_log(NULL, AV_LOG_ERROR, "mdb:%d, lastbuf:%d skipping granule %d\n",
                                             main_data_begin, s->last_buf_size, gr);
                 skip_bits_long(&s->gb, g->part2_3_length);
                 memset(g->sb_hybrid, 0, sizeof(g->sb_hybrid));
diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index c6e2fa2746..d1b1f6a716 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -511,7 +511,7 @@ static const AVOption options[]={
 {"strict", "strictly conform to all the things in the spec no matter what consequences", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_STRICT, INT_MIN, INT_MAX, V|E, "strict"},
 {"normal", NULL, 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_NORMAL, INT_MIN, INT_MAX, V|E, "strict"},
 {"inofficial", "allow inofficial extensions", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_INOFFICIAL, INT_MIN, INT_MAX, V|E, "strict"},
-{"experimental", "allow non standarized experimental things", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_EXPERIMENTAL, INT_MIN, INT_MAX, V|E, "strict"},
+{"experimental", "allow non standardized experimental things", 0, FF_OPT_TYPE_CONST, FF_COMPLIANCE_EXPERIMENTAL, INT_MIN, INT_MAX, V|E, "strict"},
 {"b_qoffset", "qp offset between p and b frames", OFFSET(b_quant_offset), FF_OPT_TYPE_FLOAT, 1.25, FLT_MIN, FLT_MAX, V|E},
 {"er", "set error resilience strategy", OFFSET(error_resilience), FF_OPT_TYPE_INT, FF_ER_CAREFUL, INT_MIN, INT_MAX, A|V|D, "er"},
 {"careful", NULL, 0, FF_OPT_TYPE_CONST, FF_ER_CAREFUL, INT_MIN, INT_MAX, V|D, "er"},
@@ -698,7 +698,7 @@ static const AVOption options[]={
 {"fastpskip", "fast pskip (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_FASTPSKIP, INT_MIN, INT_MAX, V|E, "flags2"},
 {"aud", "access unit delimiters (H.264)", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_AUD, INT_MIN, INT_MAX, V|E, "flags2"},
 {"brdo", "b-frame rate-distortion optimization", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_BRDO, INT_MIN, INT_MAX, V|E, "flags2"},
-{"skiprd", "RD optimal MB level residual skiping", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_SKIP_RD, INT_MIN, INT_MAX, V|E, "flags2"},
+{"skiprd", "RD optimal MB level residual skipping", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_SKIP_RD, INT_MIN, INT_MAX, V|E, "flags2"},
 {"complexityblur", "reduce fluctuations in qp (before curve compression)", OFFSET(complexityblur), FF_OPT_TYPE_FLOAT, 20.0, FLT_MIN, FLT_MAX, V|E},
 {"deblockalpha", "in-loop deblocking filter alphac0 parameter", OFFSET(deblockalpha), FF_OPT_TYPE_INT, DEFAULT, -6, 6, V|E},
 {"deblockbeta", "in-loop deblocking filter beta parameter", OFFSET(deblockbeta), FF_OPT_TYPE_INT, DEFAULT, -6, 6, V|E},
diff --git a/libavcodec/xan.c b/libavcodec/xan.c
index f697514a04..6e295e5b55 100644
--- a/libavcodec/xan.c
+++ b/libavcodec/xan.c
@@ -85,7 +85,7 @@ static int xan_decode_init(AVCodecContext *avctx)
     return 0;
 }
 
-/* This function is used in lieu of memcpy(). This decoder can not use
+/* This function is used in lieu of memcpy(). This decoder cannot use
  * memcpy because the memory locations often overlap and
  * memcpy doesn't like that; it's not uncommon, for example, for
  * dest = src+1, to turn byte A into  pattern AAAAAAAA.