diff -uNrp a/input/ffms.c b/input/ffms.c
--- a/input/ffms.c	2010-02-15 12:48:41 +0200
+++ b/input/ffms.c	2010-04-06 19:07:57 +0300
@@ -207,7 +207,7 @@ static int read_frame( x264_picture_t *p
      * With threaded input, copying the pointers would result in the data changing during encoding.
      * FIXME: don't do redundant sws_scales for singlethreaded input, or fix FFMS to allow
      * multiple FFMS_Frame buffers. */
-    sws_scale( h->scaler, (uint8_t**)frame->Data, (int*)frame->Linesize, 0,
+    sws_scale( h->scaler, (const uint8_t * const *)frame->Data, (int*)frame->Linesize, 0,
                frame->EncodedHeight, p_pic->img.plane, p_pic->img.i_stride );
 
     const FFMS_FrameInfo *info = FFMS_GetFrameInfo( h->track, i_frame );
diff -uNrp a/input/lavf.c b/input/lavf.c
--- a/input/lavf.c	2010-02-15 12:48:41 +0200
+++ b/input/lavf.c	2010-04-06 19:07:29 +0300
@@ -121,7 +121,7 @@ static int read_frame_internal( x264_pic
     if( check_swscale( h, c, i_frame ) )
         return -1;
     /* FIXME: avoid sws_scale where possible (no colorspace conversion). */
-    sws_scale( h->scaler, frame->data, frame->linesize, 0, c->height, p_pic->img.plane, p_pic->img.i_stride );
+    sws_scale( h->scaler, (const uint8_t * const *)frame->data, frame->linesize, 0, c->height, p_pic->img.plane, p_pic->img.i_stride );
 
     if( info )
         info->interlaced = frame->interlaced_frame;