FS-10050: [core] chromakey

diff --git a/src/mod/applications/mod_video_filter/mod_video_filter.c b/src/mod/applications/mod_video_filter/mod_video_filter.c
index 82ca612a20383cfa471c76996b74f004cb9b1611..e855bd1f79116e199bcfd521d7d41cf09d914d12 100644 (file)
--- a/src/mod/applications/mod_video_filter/mod_video_filter.c
+++ b/src/mod/applications/mod_video_filter/mod_video_filter.c
@@ -183,14 +183,14 @@ static void parse_params(chromakey_context_t *context, int start, int argc, char
        while (n > 3 && argv[i]) {
                if (!strncasecmp(argv[i], "fg:", 3)) {
                        switch_img_free(&context->imgfg);
-                       if (argv[i]+3) {
+                       if (!zstr(argv[i]+3)) {
                                context->imgfg = switch_img_read_png(argv[i]+3, SWITCH_IMG_FMT_ARGB);
                        }
                }
 
                if (!strncasecmp(argv[i], "bg:", 3)) {
                        switch_img_free(&context->imgbg);
-                       if (argv[i]+3) {
+                       if (!zstr(argv[i]+3)) {
                                context->imgbg = switch_img_read_png(argv[i]+3, SWITCH_IMG_FMT_ARGB);
                        }
                }