--- a/libavcodec/librsvgdec.c 2023-11-26 17:18:18.099129881 +0100
+++ b/libavcodec/librsvgdec.c 2023-11-26 17:21:10.620898463 +0100
@@ -90,8 +90,10 @@
         goto end;
 
     avctx->pix_fmt = AV_PIX_FMT_RGB32;
+#if LIBRSVG_MAJOR_VERSION > 2 || LIBRSVG_MAJOR_VERSION == 2 && LIBRSVG_MINOR_VERSION >= 52
     viewport.width = dimensions.width;
     viewport.height = dimensions.height;
+#endif
 
     ret = ff_get_buffer(avctx, frame, 0);
     if (ret < 0)