--- a/help/ht0-buildagraph.dox
+++ b/help/ht0-buildagraph.dox
@@ -114,7 +114,7 @@ cards' filters:
 Then you need to 'attach' the filters to a ticker. A ticker is a graph
 manager responsible for running filters.
 
-In the above case, there is 2 independant graph within the ticker: you
+In the above case, there are two (2) independent graphs within the ticker: you
 need to attach the first element of each graph (the one that does not
 contains any INPUT pins)
 
--- a/include/mediastreamer2/msfileplayer.h
+++ b/include/mediastreamer2/msfileplayer.h
@@ -30,7 +30,7 @@
 /* set loop mode: 
 	-1: no looping, 
 	0: loop at end of file, 
-	x>0, loop after x miliseconds after eof
+	x>0, loop after x milliseconds after EOF
 */
 #define MS_FILE_PLAYER_LOOP	MS_FILTER_METHOD(MS_FILE_PLAYER_ID,4,int)
 #define MS_FILE_PLAYER_DONE	MS_FILTER_METHOD(MS_FILE_PLAYER_ID,5,int)
--- a/include/mediastreamer2/msticker.h
+++ b/include/mediastreamer2/msticker.h
@@ -39,7 +39,7 @@
 
 
 /**
- * Function pointer for method getting time in miliseconds from an external source.
+ * Function pointer for method of getting time in milliseconds from an external source.
  * @var MSTickerTimeFunc
  */
 typedef uint64_t (*MSTickerTimeFunc)(void *);
@@ -77,7 +77,7 @@ struct _MSTicker
 	MSList *execution_list;     /* the list of source filters to be executed.*/
 	MSList *task_list; /* list of tasks (see ms_filter_postpone_task())*/
 	ms_thread_t thread;   /* the thread ressource*/
-	int interval; /* in miliseconds*/
+	int interval; /* in milliseconds*/
 	int exec_id;
 	uint32_t ticks;
 	uint64_t time;	/* a time since the start of the ticker expressed in milisec*/
--- a/src/audiofilters/genericplc.h
+++ b/src/audiofilters/genericplc.h
@@ -26,7 +26,7 @@
 /* 2/<min frequency we want to be able to reproduce> gives then length in seconds */
 #define PLC_BUFFER_LEN	2/40
 
-/* define in ms the maximum duration of PLC(after wich the output will be 0), and after how long we start decreasing the output volume to reach 0 at MAX_PLC_LEN */
+/* define in ms the maximum duration of PLC(after which the output will be 0), and how long before we start decreasing the output volume to reach 0 at MAX_PLC_LEN */
 #define PLC_DECREASE_START 100
 #define MAX_PLC_LEN 150
 
--- a/src/base/msticker.c
+++ b/src/base/msticker.c
@@ -454,7 +454,7 @@ void * ms_ticker_run(void *arg)
 		s->time+=s->interval;
 		late=s->wait_next_tick(s->wait_next_tick_data,s->time);
 		if (late>s->interval*5 && late>lastlate){
-			ms_warning("%s: We are late of %d miliseconds.",s->name,late);
+			ms_warning("%s: We are late by %d milliseconds.",s->name,late);
 			late_tick_time=ms_get_cur_time_ms();
 		}
 		lastlate=late;
--- a/src/crypto/dtls_srtp.c
+++ b/src/crypto/dtls_srtp.c
@@ -231,7 +231,7 @@ static void schedule_rtcp(struct _RtpTra
 }
 /**
  * Check if the incoming message is a DTLS packet.
- * If it is, store it in the context incoming buffer and call the polarssl function wich will process it.
+ * If it is, store it in the context incoming buffer and call the polarssl function which will process it.
  * This function also manages the client retransmission timer
  *
  * @param[in] 		msg	the incoming message
@@ -346,7 +346,7 @@ static bool_t ms_dtls_srtp_process_dtls_
 							base_index += Handshake_Header_Length + frag_length; // bytes parsed so far
 							frag += Handshake_Header_Length + frag_length; // point to the begining of the next fragment
 						} else { // message is malformed in a nasty way
-							ms_warning("DTLS Received %s packet len %d sessions: %p rtp session %p is malformed in an agressive way", is_rtp==TRUE?"RTP":"RTCP", (int)msgLength, ctx->stream_sessions, ctx->stream_sessions->rtp_session);
+							ms_warning("DTLS Received %s packet len %d sessions: %p rtp session %p is malformed in an aggressive way", is_rtp==TRUE?"RTP":"RTCP", (int)msgLength, ctx->stream_sessions, ctx->stream_sessions->rtp_session);
 							base_index = msgLength; // get out of the while
 							ms_free(reassembled_packet);
 							reassembled_packet = NULL;
@@ -644,7 +644,7 @@ static int ms_dtls_srtp_rtp_process_on_r
 			}
 
 			if (ctx->role != MSDtlsSrtpRoleIsServer) { /* close the connection only if we are client, if we are server, the client may ask again for last packets */
-				/*FireFox version 43 requires DTLS channel to be kept openned, probably a bug in FireFox ret = ssl_close_notify( &(ctx->rtp_dtls_context->ssl) );*/
+				/*FireFox version 43 requires DTLS channel to be kept open, probably a bug in FireFox ret = ssl_close_notify( &(ctx->rtp_dtls_context->ssl) );*/
 				
 			}
 
@@ -725,7 +725,7 @@ static int ms_dtls_srtp_rtcp_process_on_
 			}
 
 			if (ctx->role != MSDtlsSrtpRoleIsServer) { /* close the connection only if we are client, if we are server, the client may ask again for last packets */
-			/*FireFox version 43 requires DTLS channel to be kept openned, probably a bug in FireFox  ret = ssl_close_notify( &(ctx->rtcp_dtls_context->ssl) );*/
+			/*FireFox version 43 requires DTLS channel to be kept open, probably a bug in FireFox  ret = ssl_close_notify( &(ctx->rtcp_dtls_context->ssl) );*/
 			}
 		}
 
@@ -845,7 +845,7 @@ void ms_dtls_srtp_set_peer_fingerprint(M
 		size_t peer_fingerprint_length = strlen(peer_fingerprint)+1; // include the null termination
 		if (peer_fingerprint_length>sizeof(context->peer_fingerprint)) {
 			memcpy(context->peer_fingerprint, peer_fingerprint, sizeof(context->peer_fingerprint));
-			ms_error("DTLS-SRTP received from SDP INVITE a peer fingerprint %d bytes length wich is longer than maximum storage %d bytes", (int)peer_fingerprint_length, (int)sizeof(context->peer_fingerprint));
+			ms_error("DTLS-SRTP received from SDP INVITE a peer fingerprint %d bytes long, which is longer than maximum storage of %d bytes", (int)peer_fingerprint_length, (int)sizeof(context->peer_fingerprint));
 		} else {
 			memcpy(context->peer_fingerprint, peer_fingerprint, peer_fingerprint_length);
 		}
--- a/src/crypto/ms_srtp.c
+++ b/src/crypto/ms_srtp.c
@@ -589,6 +589,6 @@ const char * ms_srtp_stream_type_to_stri
 	case MSSRTP_RTCP_STREAM: return "MSSRTP_RTCP_STREAM";
 	case MSSRTP_ALL_STREAMS: return "MSSRTP_ALL_STREAMS";
 	}
-	return "Unkown srtp tream type";
+	return "Unknown srtp stream type";
 }
 
--- a/src/crypto/zrtp.c
+++ b/src/crypto/zrtp.c
@@ -641,7 +641,7 @@ MSZrtpContext* ms_zrtp_multistream_new(M
 	int retval;
 	MSZrtpContext *userData;
 	if ((retval = bzrtp_addChannel(activeContext->zrtpContext, sessions->rtp_session->snd.ssrc)) != 0) {
-		ms_warning("ZRTP could't add stream, returns %x", retval);
+		ms_warning("ZRTP couldn't add stream, returned %x", retval);
 	}
 
 	ms_message("Initializing multistream ZRTP context on rtp session [%p] ssrc 0x%x",sessions->rtp_session, sessions->rtp_session->snd.ssrc);
--- a/src/otherfilters/msrtp.c
+++ b/src/otherfilters/msrtp.c
@@ -731,7 +731,7 @@ static void receiver_process(MSFilter *
 		return;
 	
 	if (d->reset_jb){
-		ms_message("Reseting jitter buffer");
+		ms_message("Resetting jitter buffer");
 		rtp_session_resync(d->session);
 		d->reset_jb=FALSE;
 	}
--- a/src/utils/audiodiff.c
+++ b/src/utils/audiodiff.c
@@ -283,7 +283,7 @@ static int _ms_audio_diff_chunked(FileIn
 	*ret = cum_res / (double)tot_energy;
 	ms_message("Similarity factor weighted with most significant chunks is [%g]", *ret);
 	*ret = *ret * (1-variance);
-	ms_message("After integrating max position variance accross chunks, it is [%g]", *ret);
+	ms_message("After integrating maximum position variance across chunks, it is [%g]", *ret);
 	ms_free(chunk_energies);
 	ms_free(max_pos_table);
 	return maxpos;
--- a/src/utils/mkv_reader.h
+++ b/src/utils/mkv_reader.h
@@ -136,7 +136,7 @@ MKVTrackReader *mkv_reader_get_track_rea
 /**
  * @brief Set the reading head of each assocated track reader at a specific position
  * @param reader MKVReader
- * @param pos_ms Position of the head in miliseconds
+ * @param pos_ms Position of the head in milliseconds
  * @return The effective position of the head after the operation
  */
 int mkv_reader_seek(MKVReader *reader, int pos_ms);
--- a/src/videofilters/bb10_capture.cpp
+++ b/src/videofilters/bb10_capture.cpp
@@ -125,7 +125,7 @@ static void bb10capture_open_camera(BB10
 	camera_error_t error;
 	
 	if (d->camera_openned) {
-		ms_warning("[bb10_capture] camera already openned, skipping...");
+		ms_warning("[bb10_capture] camera already opened, skipping...");
 		return;
 	}
 	
@@ -157,7 +157,7 @@ static void bb10capture_open_camera(BB10
 
 static void bb10capture_start_capture(BB10Capture *d) {
 	if (!d->camera_openned) {
-		ms_error("[bb10_capture] camera not openned, skipping...");
+		ms_error("[bb10_capture] camera not opened, skipping...");
 		return;
 	}
 	if (d->capture_started) {
@@ -186,7 +186,7 @@ static void bb10capture_stop_capture(BB1
 
 static void bb10capture_close_camera(BB10Capture *d) {
 	if (!d->camera_openned) {
-		ms_warning("[bb10_capture] camera not openned, skipping...");
+		ms_warning("[bb10_capture] camera not opened, skipping...");
 		return;
 	}
 	
--- a/src/videofilters/msv4l2.c
+++ b/src/videofilters/msv4l2.c
@@ -697,7 +697,7 @@ static void *msv4l2_thread(void *ptr){
 	ms_message("msv4l2_thread starting");
 	if (s->fd==-1){
 		if( msv4l2_open(s)!=0){
-			ms_warning("msv4l2 could not be openned");
+			ms_warning("msv4l2 could not be opened");
 			goto close;
 		}
 	}
--- a/src/videofilters/vp8.c
+++ b/src/videofilters/vp8.c
@@ -407,10 +407,10 @@ static void enc_fill_encoder_flags(EncSt
 		} else if (frame_type & VP8_ALTR_FRAME) {
 			*flags |= (VP8_EFLAG_FORCE_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_REF_ARF);
 			if (s->frame_count > s->frames_state.last_independent_frame + 5*enc_get_ref_frames_interval(s)){
-				/*force an independant alt ref frame to force picture to be refreshed completely, otherwise
+				/*force an independent alt ref frame to force picture to be refreshed completely, otherwise
 				 * pixel color saturation appears due to accumulation of small predictive errors*/
 				*flags |= VP8_EFLAG_NO_REF_LAST | VP8_EFLAG_NO_REF_GF;
-				ms_message("Forcing independant altref frame.");
+				ms_message("Forcing independent altref frame.");
 			}
 		}
 		if (!(*flags & VPX_EFLAG_FORCE_KF)){
@@ -1141,7 +1141,7 @@ static int dec_freeze_on_error(MSFilter
 
 static int dec_reset(MSFilter *f, void *data) {
 	DecState *s = (DecState *)f->data;
-	ms_message("Reseting VP8 decoder");
+	ms_message("Resetting VP8 decoder");
 	ms_filter_lock(f);
 	vpx_codec_destroy(&s->codec);
 	if (dec_initialize_impl(f) != 0){
--- a/src/voip/audiostream.c
+++ b/src/voip/audiostream.c
@@ -914,7 +914,7 @@ int audio_stream_start_from_io(AudioStre
 	}
 
 	/* sample rate is already set for rtpsend and rtprcv, check if we have to adjust it to */
-	/* be able to use the echo canceller wich may be limited (webrtc aecm max frequency is 16000 Hz) */
+	/* be able to use the echo canceller, which may be limited (webrtc aecm max frequency is 16000 Hz) */
 	// First check if we need to use the echo canceller
 	// Overide feature if not requested or done at sound card level
 	if ( ((stream->features & AUDIO_STREAM_FEATURE_EC) && !stream->use_ec) || has_builtin_ec )
--- a/src/voip/msvideo.c
+++ b/src/voip/msvideo.c
@@ -955,7 +955,7 @@ void ms_average_fps_init(MSAverageFPS* a
 	afps->mean_inter_frame = 0;
 	afps->context = ctx;
 	if (!ctx || strstr(ctx, "%f") == 0) {
-		ms_error("Invalid MSAverageFPS context given '%s' (must be not null and must contain one occurence of '%%f'", ctx);
+		ms_error("Invalid MSAverageFPS context given '%s' (must be not null and must contain one occurrence of '%%f'", ctx);
 	}
 }
 
--- a/tools/mediastream.c
+++ b/tools/mediastream.c
@@ -198,7 +198,7 @@ const char *usage="mediastream --local <
 								"[ --ec-tail <echo canceller tail length in ms> ]\n"
 								"[ --el (enable echo limiter) ]\n"
 								"[ --el-force <(float) [0-1]> (The proportional coefficient controlling the mic attenuation) ]\n"
-								"[ --el-speed <(float) [0-1]> (gain changes are smoothed with a coefficent) ]\n"
+								"[ --el-speed <(float) [0-1]> (gain changes are smoothed with a coefficient) ]\n"
 								"[ --el-sustain <(int)> (Time in milliseconds for which the attenuation is kept unchanged after) ]\n"
 								"[ --el-thres <(float) [0-1]> (Threshold above which the system becomes active) ]\n"
 								"[ --el-transmit-thres <(float) [0-1]> (TO BE DOCUMENTED) ]\n"
@@ -210,7 +210,7 @@ const char *usage="mediastream --local <
 								"[ --ice-remote-candidate <ip:port:[host|srflx|prflx|relay]> ]\n"
 								"[ --infile <input wav file> specify a wav file to be used for input, instead of soundcard ]\n"
 								"[ --interactive (run in interactive mode) ]\n"
-								"[ --jitter <miliseconds> ]\n"
+								"[ --jitter <milliseconds> ]\n"
 								"[ --log <file> ]\n"
 								"[ --mtu <mtu> (specify MTU)]\n"
 								"[ --netsim-bandwidth <bandwidth limit in bits/s> (simulates a network download bandwidth limit) ]\n"
@@ -228,7 +228,7 @@ const char *usage="mediastream --local <
 								"[ --outfile <output wav file> specify a wav file to write audio into, instead of soundcard ]\n"
 								"[ --playback-card <name> ]\n"
 								"[ --rc <rate control algorithm> possible values are: none, simple, advanced ]\n"
-								"[ --srtp <local master_key> <remote master_key> (enable srtp, master key is generated if absent from comand line) ]\n"
+								"[ --srtp <local master_key> <remote master_key> (enable srtp, master key is generated if absent from command line) ]\n"
 								"[ --verbose (most verbose messages) ]\n"
 								"[ --video-display-filter <name> ]\n"
 								"[ --video-windows-id <video surface:preview surface >]\n"