+#define OFFSET(x) offsetof(GIFContext, x)
+#define ENC AV_OPT_FLAG_ENCODING_PARAM
+static const AVOption options[] = {
+ { "loop", "Number of times to loop the output.", OFFSET(loop), FF_OPT_TYPE_INT, {0}, 0, 65535, ENC },
+ { NULL },
+};
+
+static const AVClass gif_muxer_class = {
+ .class_name = "GIF muxer",
+ .item_name = av_default_item_name,
+ .version = LIBAVUTIL_VERSION_INT,
+ .option = options,
+};
+