diff --git a/modules/codec/ffmpeg/demux.c b/modules/codec/ffmpeg/demux.c
index 62abc13808afdc16a91ac2627b76fe5cc82fd0e6..0b87c2f2435dfa9e3ff0fd0edb39f5ce78651ca5 100644
--- a/modules/codec/ffmpeg/demux.c
+++ b/modules/codec/ffmpeg/demux.c
@@ -338,7 +338,7 @@ static int Control( demux_t *p_demux, int i_query, va_list args )
                 *pf = (double)stream_Tell( p_demux->s ) / (double)i64;
             }
 
-            if( p_sys->ic->duration != AV_NOPTS_VALUE && p_sys->i_pcr > 0 )
+            if( (p_sys->ic->duration != AV_NOPTS_VALUE) && (p_sys->i_pcr > 0) )
             {
                 *pf = (double)p_sys->i_pcr / (double)p_sys->ic->duration;
             }
diff --git a/modules/codec/ffmpeg/encoder.c b/modules/codec/ffmpeg/encoder.c
index 7de89dccacff711e95f5367177cb583c4846b1f7..c0683d3d91c308caeb5805a5693d9f3188b5d0b2 100644
--- a/modules/codec/ffmpeg/encoder.c
+++ b/modules/codec/ffmpeg/encoder.c
@@ -44,7 +44,7 @@
 #endif
 
 #if LIBAVCODEC_BUILD < 4704
-#   define AV_NOPTS_VALUE 0
+#   define AV_NOPTS_VALUE (int64_t)0
 #endif
 #if LIBAVCODEC_BUILD < 4684
 #    define FF_QP2LAMBDA 118
@@ -877,7 +877,7 @@ static block_t *EncodeVideo( encoder_t *p_enc, picture_t *p_pict )
 #endif
     /* End work-around */
 
-    i_out = avcodec_encode_video( p_sys->p_context, p_sys->p_buffer_out,
+    i_out = avcodec_encode_video( p_sys->p_context, (uint8_t*)p_sys->p_buffer_out,
                                   AVCODEC_MAX_VIDEO_FRAME_SIZE, &frame );
 
     if( i_out > 0 )
@@ -968,7 +968,7 @@ static block_t *EncodeAudio( encoder_t *p_enc, aout_buffer_t *p_aout_buf )
     encoder_sys_t *p_sys = p_enc->p_sys;
     block_t *p_block, *p_chain = NULL;
 
-    char *p_buffer = p_aout_buf->p_buffer;
+    uint8_t *p_buffer = p_aout_buf->p_buffer;
     int i_samples = p_aout_buf->i_nb_samples;
     int i_samples_delay = p_sys->i_samples_delay;
 
@@ -1001,7 +1001,7 @@ static block_t *EncodeAudio( encoder_t *p_enc, aout_buffer_t *p_aout_buf )
             p_samples = (int16_t *)p_buffer;
         }
 
-        i_out = avcodec_encode_audio( p_sys->p_context, p_sys->p_buffer_out,
+        i_out = avcodec_encode_audio( p_sys->p_context, (uint8_t *)p_sys->p_buffer_out,
                                       2 * AVCODEC_MAX_AUDIO_FRAME_SIZE,
                                       p_samples );
 
diff --git a/modules/codec/ffmpeg/video.c b/modules/codec/ffmpeg/video.c
index 976f4fa041cad99828c21940cd9c5594afe40cbd..6fe925599c0dad5752f4e761ea4d7ad2fdf98003 100644
--- a/modules/codec/ffmpeg/video.c
+++ b/modules/codec/ffmpeg/video.c
@@ -517,7 +517,7 @@ picture_t *E_(DecodeVideo)( decoder_t *p_dec, block_t **pp_block )
 
         i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
                                        &b_gotpicture,
-                                       p_sys->p_buffer, p_sys->i_buffer );
+                                       (uint8_t*)p_sys->p_buffer, p_sys->i_buffer );
         if( b_null_size && p_sys->p_context->width > 0 &&
             p_sys->p_context->height > 0 )
         {
@@ -526,7 +526,7 @@ picture_t *E_(DecodeVideo)( decoder_t *p_dec, block_t **pp_block )
             p_sys->p_context->hurry_up = 0;
             i_used = avcodec_decode_video( p_sys->p_context, p_sys->p_ff_pic,
                                            &b_gotpicture,
-                                           p_sys->p_buffer, p_sys->i_buffer );
+                                           (uint8_t*)p_sys->p_buffer, p_sys->i_buffer );
         }
 
         if( i_used < 0 )
@@ -725,7 +725,7 @@ static void ffmpeg_InitCodec( decoder_t *p_dec )
 
         /* Now remove all atoms before the SMI one */
         if( p_sys->p_context->extradata_size > 0x5a &&
-            strncmp( &p[0x56], "SMI ", 4 ) )
+            strncmp( (char*)&p[0x56], "SMI ", 4 ) )
         {
             uint8_t *psz = &p[0x52];
 
@@ -737,7 +737,7 @@ static void ffmpeg_InitCodec( decoder_t *p_dec )
                     /* FIXME handle 1 as long size */
                     break;
                 }
-                if( !strncmp( &psz[4], "SMI ", 4 ) )
+                if( !strncmp( (char*)&psz[4], "SMI ", 4 ) )
                 {
                     memmove( &p[0x52], psz,
                              &p[p_sys->p_context->extradata_size] - psz );