libavcodec/ansi.c:227: error: Uninitialized Value
  The value read from width was never initialized.

libavcodec/ansi.c:227:13: 
225.             avpriv_request_sample(avctx, "Unsupported screen mode");
226.         }
227.         if (width != avctx->width || height != avctx->height) {
                 ^
228.             av_frame_unref(s->frame);
229.             avcodec_set_dimensions(avctx, width, height);
