libavcodec/ansi.c:229: error: Uninitialized Value
  The value read from width was never initialized.

libavcodec/ansi.c:229:19: 
227.         if (width != avctx->width || height != avctx->height) {
228.             av_frame_unref(s->frame);
229.             ret = ff_set_dimensions(avctx, width, height);
                       ^
230.             if (ret < 0)
231.                 return ret;
