diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c
index e375d1f98b..19e16f8b8b 100644
--- a/libavcodec/aacdec.c
+++ b/libavcodec/aacdec.c
@@ -1453,8 +1453,6 @@ static void apply_intensity_stereo(ChannelElement *cpe, int ms_present)
 /**
  * Decode a channel_pair_element; reference: table 4.4.
  *
- * @param   elem_id Identifies the instance of a syntax element.
- *
  * @return  Returns error status. 0 - OK, !0 - error
  */
 static int decode_cpe(AACContext *ac, GetBitContext *gb, ChannelElement *cpe)
@@ -1496,8 +1494,6 @@ static int decode_cpe(AACContext *ac, GetBitContext *gb, ChannelElement *cpe)
 /**
  * Decode coupling_channel_element; reference: table 4.8.
  *
- * @param   elem_id Identifies the instance of a syntax element.
- *
  * @return  Returns error status. 0 - OK, !0 - error
  */
 static int decode_cce(AACContext *ac, GetBitContext *gb, ChannelElement *che)
@@ -1864,7 +1860,6 @@ static void apply_independent_coupling(AACContext *ac,
 /**
  * channel coupling transformation interface
  *
- * @param   index   index into coupling gain array
  * @param   apply_coupling_method   pointer to (in)dependent coupling function
  */
 static void apply_channel_coupling(AACContext *ac, ChannelElement *cc,
diff --git a/libavcodec/acelp_pitch_delay.h b/libavcodec/acelp_pitch_delay.h
index dabe6e79c3..5cdbddd157 100644
--- a/libavcodec/acelp_pitch_delay.h
+++ b/libavcodec/acelp_pitch_delay.h
@@ -85,8 +85,6 @@ int ff_acelp_decode_4bit_to_2nd_delay3(
  * \brief Decode pitch delay of the first subframe encoded by 9 bits
  *        with 1/6 precision.
  * \param ac_index adaptive codebook index (9 bits)
- * \param pitch_delay_min lower bound (integer) of pitch delay interval for
- *                      second subframe
  *
  * \return pitch delay in 1/6 units
  *
@@ -147,7 +145,6 @@ void ff_acelp_update_past_gain(
  * \param mr_energy mean innovation energy and fixed-point correction (7.13)
  * \param quant_energy [in/out] past quantized energies (5.10)
  * \param subframe_size length of subframe
- * \param ma_pred_order MA prediction order
  *
  * \return quantized fixed-codebook gain (14.1)
  *
diff --git a/libavcodec/cook.c b/libavcodec/cook.c
index b6f6f4a0c1..419e1c4c23 100644
--- a/libavcodec/cook.c
+++ b/libavcodec/cook.c
@@ -945,11 +945,8 @@ mlt_compensate_output(COOKContext *q, float *decode_buffer,
  *
  * @param q                 pointer to the COOKContext
  * @param inbuffer          pointer to the inbuffer
- * @param sub_packet_size   subpacket size
  * @param outbuffer         pointer to the outbuffer
  */
-
-
 static void decode_subpacket(COOKContext *q, COOKSubpacket* p, const uint8_t *inbuffer, int16_t *outbuffer) {
     int sub_packet_size = p->size;
     /* packet dump */
diff --git a/libavcodec/escape124.c b/libavcodec/escape124.c
index b51206a0b5..ddb4fa47d9 100644
--- a/libavcodec/escape124.c
+++ b/libavcodec/escape124.c
@@ -200,8 +200,6 @@ static const uint16_t mask_matrix[] = {0x1,   0x2,   0x10,   0x20,
  * @param avctx decoder context
  * @param data decoded frame
  * @param data_size size of the decoded frame
- * @param buf input buffer
- * @param buf_size input buffer size
  * @return 0 success, -1 on error
  */
 static int escape124_decode_frame(AVCodecContext *avctx,
diff --git a/libavcodec/fraps.c b/libavcodec/fraps.c
index 959ce92ea1..3cb5cca8cc 100644
--- a/libavcodec/fraps.c
+++ b/libavcodec/fraps.c
@@ -123,8 +123,6 @@ static int fraps2_decode_plane(FrapsContext *s, uint8_t *dst, int stride, int w,
  * @param avctx codec context
  * @param data output AVFrame
  * @param data_size size of output data or 0 if no picture is returned
- * @param buf input data frame
- * @param buf_size size of input data frame
  * @return number of consumed bytes on success or negative if decode fails
  */
 static int decode_frame(AVCodecContext *avctx,
diff --git a/libavcodec/lsp.h b/libavcodec/lsp.h
index cae38c3a9c..4e9171a94f 100644
--- a/libavcodec/lsp.h
+++ b/libavcodec/lsp.h
@@ -48,7 +48,6 @@ void ff_acelp_reorder_lsf(int16_t* lsfq, int lsfq_min_distance, int lsfq_min, in
  *
  * @param[in,out] lsf    LSFs in Hertz
  * @param min_spacing    minimum distance between two consecutive lsf values
- * @param                size size of the lsf vector
  */
 void ff_set_min_dist_lsf(float *lsf, double min_spacing, int order);
 
diff --git a/libavcodec/qdm2.c b/libavcodec/qdm2.c
index d88d03a212..87dd0717e8 100644
--- a/libavcodec/qdm2.c
+++ b/libavcodec/qdm2.c
@@ -942,7 +942,6 @@ static void synthfilt_build_sb_samples (QDM2Context *q, GetBitContext *gb, int l
  * This is similar to process_subpacket_9, but for a single channel and for element [0]
  * same VLC tables as process_subpacket_9 are used.
  *
- * @param q         context
  * @param quantized_coeffs    pointer to quantized_coeffs[ch][0]
  * @param gb        bitreader context
  * @param length    packet length in bits
diff --git a/libavdevice/x11grab.c b/libavdevice/x11grab.c
index 63dc0f74f2..1b58d44f2e 100644
--- a/libavdevice/x11grab.c
+++ b/libavdevice/x11grab.c
@@ -243,8 +243,6 @@ x11grab_read_header(AVFormatContext *s1, AVFormatParameters *ap)
  * @param image image to paint the mouse pointer to
  * @param s context used to retrieve original grabbing rectangle
  *          coordinates
- * @param x Mouse pointer coordinate
- * @param y Mouse pointer coordinate
  */
 static void
 paint_mouse_pointer(XImage *image, struct x11_grab *s)
diff --git a/libavformat/rtpdec_asf.h b/libavformat/rtpdec_asf.h
index 5d60a14354..35873bda0c 100644
--- a/libavformat/rtpdec_asf.h
+++ b/libavformat/rtpdec_asf.h
@@ -29,7 +29,6 @@
  * Parse a Windows Media Server-specific SDP line
  *
  * @param s RTSP demux context
- * @param line the SDP line to be parsed
  */
 void ff_wms_parse_sdp_a_line(AVFormatContext *s, const char *p);