diff --git a/demux/demux_mpg.c b/demux/demux_mpg.c
index 83d27def11..4223a33c92 100644
--- a/demux/demux_mpg.c
+++ b/demux/demux_mpg.c
@@ -844,7 +844,7 @@ static int demux_mpg_gxf_fill_buffer(demuxer_t *demux, demux_stream_t *ds) {
     return 0;
   }
   {
-    register uint32_t state = (uint32_t)demux->priv;
+    register uint32_t state = (uint32_t)(uintptr_t)demux->priv;
     register int pos = -len;
     unsigned char *buf = &pack->buffer[len];
     do {
@@ -852,7 +852,7 @@ static int demux_mpg_gxf_fill_buffer(demuxer_t *demux, demux_stream_t *ds) {
       if (unlikely((state | 3) == 0x1bf))
         pos = find_end(&buf, pos, demux->stream);
     } while (++pos < 0);
-    demux->priv = (void *)state;
+    demux->priv = (void *)(uintptr_t)state;
     len = buf - pack->buffer;
   }
   if (len < STREAM_BUFFER_SIZE)
diff --git a/sub/ass_mp.c b/sub/ass_mp.c
index c992f017f7..44f01ac186 100644
--- a/sub/ass_mp.c
+++ b/sub/ass_mp.c
@@ -232,13 +232,17 @@ void mp_ass_configure(ASS_Renderer *priv, struct MPOpts *opts,
     ass_set_margins(priv, dim->mt, dim->mb, dim->ml, dim->mr);
 
     int set_use_margins = 0;
+#if LIBASS_VERSION >= 0x01010000
     int set_sub_pos = 0;
+#endif
     float set_line_spacing = 0;
     float set_font_scale = 1;
     int set_hinting = 0;
     if (opts->ass_style_override) {
         set_use_margins = opts->ass_use_margins;
+#if LIBASS_VERSION >= 0x01010000
         set_sub_pos = 100 - sub_pos;
+#endif
         set_line_spacing = opts->ass_line_spacing;
         set_font_scale = opts->sub_scale;
         set_hinting = opts->ass_hinting & 3; // +4 was for no hinting if scaled