diff --git a/doc/decoders.texi b/doc/decoders.texi
index 35771140e1..babe129767 100644
--- a/doc/decoders.texi
+++ b/doc/decoders.texi
@@ -279,7 +279,7 @@ present between the subtitle lines because of double-sized teletext charactes.
 Default value is 1.
 @item txt_duration
 Sets the display duration of the decoded teletext pages or subtitles in
-miliseconds. Default value is 30000 which is 30 seconds.
+milliseconds. Default value is 30000 which is 30 seconds.
 @item txt_transparent
 Force transparent background of the generated teletext bitmaps. Default value
 is 0 which means an opaque background.
diff --git a/doc/encoders.texi b/doc/encoders.texi
index d0caa77ee3..321eb2f880 100644
--- a/doc/encoders.texi
+++ b/doc/encoders.texi
@@ -1401,7 +1401,7 @@ is 0. This is only used when @option{slice_mode} is set to
 @samp{fixed}.
 
 @item slice_mode
-Set slice mode. Can assume one of the follwing possible values:
+Set slice mode. Can assume one of the following possible values:
 
 @table @samp
 @item fixed
diff --git a/doc/filters.texi b/doc/filters.texi
index 42341ea9f3..24abdda095 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -3243,7 +3243,7 @@ silenceremove=1:5:0.02
 @end example
 
 @item
-Trim all silence encountered from begining to end where there is more than 1
+Trim all silence encountered from beginning to end where there is more than 1
 second of silence in audio:
 @example
 silenceremove=0:0:0:-1:1:-90dB
@@ -4713,7 +4713,7 @@ ffmpeg -f lavfi -i color=c=black:s=1280x720 -i video.mp4 -shortest -filter_compl
 
 Display CIE color diagram with pixels overlaid onto it.
 
-The filter acccepts the following options:
+The filter accepts the following options:
 
 @table @option
 @item system
@@ -4743,7 +4743,7 @@ Set CIE system.
 @item gamuts
 Set what gamuts to draw.
 
-See @code{system} option for avaiable values.
+See @code{system} option for available values.
 
 @item size, s
 Set ciescope size, by default set to 512.
diff --git a/doc/protocols.texi b/doc/protocols.texi
index 72b39145ec..9bbd1315fc 100644
--- a/doc/protocols.texi
+++ b/doc/protocols.texi
@@ -695,7 +695,7 @@ This protocol accepts the following options.
 
 @table @option
 @item timeout
-Set timeout in miliseconds of socket I/O operations used by the underlying
+Set timeout in milliseconds of socket I/O operations used by the underlying
 low level operation. By default it is set to -1, which means that the timeout
 is not specified.
 
diff --git a/ffmpeg.c b/ffmpeg.c
index 9ffd833a91..b29be1ebd5 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -3499,12 +3499,12 @@ static int check_keyboard_interaction(int64_t cur_time)
                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
                         fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
                     } else if (key == 'c') {
-                        fprintf(stderr, "Queing commands only on filters supporting the specific command is unsupported\n");
+                        fprintf(stderr, "Queuing commands only on filters supporting the specific command is unsupported\n");
                         ret = AVERROR_PATCHWELCOME;
                     } else {
                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
                         if (ret < 0)
-                            fprintf(stderr, "Queing command failed with error %s\n", av_err2str(ret));
+                            fprintf(stderr, "Queuing command failed with error %s\n", av_err2str(ret));
                     }
                 }
             }
diff --git a/libavcodec/cfhd.c b/libavcodec/cfhd.c
index 74facd462d..e8f859c8aa 100644
--- a/libavcodec/cfhd.c
+++ b/libavcodec/cfhd.c
@@ -513,7 +513,7 @@ static int cfhd_decode(AVCodecContext *avctx, void *data, int *got_frame,
             }
 
             if (highpass_height > highpass_a_height || highpass_width > highpass_a_width || a_expected < expected) {
-                av_log(avctx, AV_LOG_ERROR, "Too many highpass coefficents\n");
+                av_log(avctx, AV_LOG_ERROR, "Too many highpass coefficients\n");
                 ret = AVERROR(EINVAL);
                 goto end;
             }
diff --git a/libavcodec/vaapi_encode.c b/libavcodec/vaapi_encode.c
index c55a78361c..8c9a3bda3b 100644
--- a/libavcodec/vaapi_encode.c
+++ b/libavcodec/vaapi_encode.c
@@ -334,7 +334,7 @@ static int vaapi_encode_issue(AVCodecContext *avctx,
         if (ctx->codec->init_slice_params) {
             err = ctx->codec->init_slice_params(avctx, pic, slice);
             if (err < 0) {
-                av_log(avctx, AV_LOG_ERROR, "Failed to initalise slice "
+                av_log(avctx, AV_LOG_ERROR, "Failed to initialise slice "
                        "parameters: %d.\n", err);
                 goto fail;
             }
diff --git a/libavdevice/dv1394.c b/libavdevice/dv1394.c
index 9f02780e72..c3483010fa 100644
--- a/libavdevice/dv1394.c
+++ b/libavdevice/dv1394.c
@@ -137,7 +137,7 @@ static int dv1394_read_packet(AVFormatContext *context, AVPacket *pkt)
                  * We have to reset :(.
                  */
 
-                av_log(context, AV_LOG_ERROR, "DV1394: Ring buffer overflow. Reseting ..\n");
+                av_log(context, AV_LOG_ERROR, "DV1394: Ring buffer overflow. Resetting ..\n");
 
                 dv1394_reset(dv);
                 dv1394_start(dv);
@@ -173,7 +173,7 @@ restart_poll:
         dv->done  = 0;
 
         if (s.dropped_frames) {
-            av_log(context, AV_LOG_ERROR, "DV1394: Frame drop detected (%d). Reseting ..\n",
+            av_log(context, AV_LOG_ERROR, "DV1394: Frame drop detected (%d). Resetting ..\n",
                     s.dropped_frames);
 
             dv1394_reset(dv);
diff --git a/libavformat/aviobuf.c b/libavformat/aviobuf.c
index 95793c92cd..31e72021f1 100644
--- a/libavformat/aviobuf.c
+++ b/libavformat/aviobuf.c
@@ -385,7 +385,7 @@ static inline int put_str16(AVIOContext *s, const char *str, const int be)
                   ret += 2;)
         continue;
 invalid:
-        av_log(s, AV_LOG_ERROR, "Invaid UTF8 sequence in avio_put_str16%s\n", be ? "be" : "le");
+        av_log(s, AV_LOG_ERROR, "Invalid UTF8 sequence in avio_put_str16%s\n", be ? "be" : "le");
         err = AVERROR(EINVAL);
         if (!*(q-1))
             break;
diff --git a/libavformat/cinedec.c b/libavformat/cinedec.c
index 0efedda1a3..32cccf566b 100644
--- a/libavformat/cinedec.c
+++ b/libavformat/cinedec.c
@@ -111,7 +111,7 @@ static int cine_read_header(AVFormatContext *avctx)
     compression = avio_rl16(pb);
     version     = avio_rl16(pb);
     if (version != 1) {
-        avpriv_request_sample(avctx, "uknown version %i", version);
+        avpriv_request_sample(avctx, "unknown version %i", version);
         return AVERROR_INVALIDDATA;
     }
 
diff --git a/libavformat/mxfenc.c b/libavformat/mxfenc.c
index 0c04a396cc..80318b8903 100644
--- a/libavformat/mxfenc.c
+++ b/libavformat/mxfenc.c
@@ -671,7 +671,7 @@ static uint64_t mxf_utf16len(const char *utf8_str)
             size += 2;
         continue;
 invalid:
-        av_log(NULL, AV_LOG_ERROR, "Invaid UTF8 sequence in mxf_utf16len\n\n");
+        av_log(NULL, AV_LOG_ERROR, "Invalid UTF8 sequence in mxf_utf16len\n\n");
     }
     size += 1;
     return size;
diff --git a/libavformat/psxstr.c b/libavformat/psxstr.c
index 63598fe72b..f7b9495bb9 100644
--- a/libavformat/psxstr.c
+++ b/libavformat/psxstr.c
@@ -211,7 +211,7 @@ static int str_read_packet(AVFormatContext *s,
 
                 if(pkt->size != sector_count*VIDEO_DATA_CHUNK_SIZE){
                     if(pkt->data)
-                        av_log(s, AV_LOG_ERROR, "missmatching sector_count\n");
+                        av_log(s, AV_LOG_ERROR, "mismatching sector_count\n");
                     av_packet_unref(pkt);
                     if (av_new_packet(pkt, sector_count*VIDEO_DATA_CHUNK_SIZE))
                         return AVERROR(EIO);
diff --git a/libavformat/sdp.c b/libavformat/sdp.c
index 01b564b7be..4e37f65b09 100644
--- a/libavformat/sdp.c
+++ b/libavformat/sdp.c
@@ -641,7 +641,7 @@ static char *sdp_write_media_attributes(char *buff, int size, AVStream *st, int
             if (p->extradata_size)
                 config = xiph_extradata2config(fmt, p);
             else
-                av_log(fmt, AV_LOG_ERROR, "Theora configuation info missing\n");
+                av_log(fmt, AV_LOG_ERROR, "Theora configuration info missing\n");
             if (!config)
                 return NULL;