AVFILTER_DEFINE_CLASS(chromakey);
-AVFilter ff_vf_chromakey = {
+const AVFilter ff_vf_chromakey = {
.name = "chromakey",
.description = NULL_IF_CONFIG_SMALL("Turns a certain color into transparency. Operates on YUV colors."),
.priv_size = sizeof(ChromakeyContext),
AVFILTER_DEFINE_CLASS(chromahold);
-AVFilter ff_vf_chromahold = {
+const AVFilter ff_vf_chromahold = {
.name = "chromahold",
.description = NULL_IF_CONFIG_SMALL("Turns a certain color range into gray."),
.priv_size = sizeof(ChromakeyContext),