diff --git a/src/demo/normal.c b/src/demo/normal.c
index 50855b1677..15af938e5f 100644
--- a/src/demo/normal.c
+++ b/src/demo/normal.c
@@ -23,13 +23,12 @@ mandelbrot(int y, int x, int dy, int dx){
 static int
 mcell(uint32_t* c, int y, int x, int dy, int dx){
   int iter = mandelbrot(y, x, dy, dx);
-  *c = ((128 - iter / 2) << 24u) + ((256 - iter) << 16u) + ((128 - iter / 2) << 8u);
+  *c = ((256 - iter) << 24u) + ((256 - iter) << 16u) + ((256 - iter) << 8u);
   return 0;
 }
 
 static uint32_t*
 offset(uint32_t* rgba, int y, int x, int dx){
-fprintf(stderr, "writing to %p\n", rgba + y * dx + x);
   return rgba + y * dx + x;
 }
 
@@ -42,6 +41,7 @@ int normal_demo(struct notcurses* nc){
   if(!rgba){
     return -1;
   }
+  memset(rgba, 0, sizeof(*rgba) * dy * dx);
   int y;
   if(dy / VSCALE % 2){
     y = dy / VSCALE + 1;
@@ -60,12 +60,11 @@ int normal_demo(struct notcurses* nc){
         return -1;
       }
     }
-    if(ncblit_rgba(n, y, 0, dx, rgba, dy / 2 - y, 0, y * 2, dx) < 0){
+    if(ncblit_rgba(n, 0, 0, dx * sizeof(*rgba), rgba, 0, 0, dy, dx) < 0){
       return -1;
     }
     DEMO_RENDER(nc);
   }
-  sleep(1);
   free(rgba);
   return 0;
 }
diff --git a/src/lib/libav.c b/src/lib/libav.c
index b6b1842e3a..cf9eb8ece5 100644
--- a/src/lib/libav.c
+++ b/src/lib/libav.c
@@ -385,7 +385,7 @@ tria_blit(ncplane* nc, int placey, int placex, int linesize, const void* data,
     for(x = placex ; visx < (begx + lenx) && x < dimx ; ++x, ++visx){
       const unsigned char* rgbbase_up = dat + (linesize * visy) + (visx * bpp / CHAR_BIT);
       const unsigned char* rgbbase_down = dat + (linesize * (visy + 1)) + (visx * bpp / CHAR_BIT);
-fprintf(stderr, "[%04d/%04d] bpp: %d lsize: %d %02x %02x %02x %02x\n", y, x, bpp, linesize, rgbbase_up[0], rgbbase_up[1], rgbbase_up[2], rgbbase_up[3]);
+//fprintf(stderr, "[%04d/%04d] bpp: %d lsize: %d %02x %02x %02x %02x\n", y, x, bpp, linesize, rgbbase_up[0], rgbbase_up[1], rgbbase_up[2], rgbbase_up[3]);
       cell* c = ncplane_cell_ref_yx(nc, y, x);
       // use the default for the background, as that's the only way it's
       // effective in that case anyway