@@ -3718,7 +3718,7 @@ static int opt_bsf(const char *opt, const char *arg)

 static int opt_preset(const char *opt, const char *arg)

 {

     FILE *f=NULL;

-    char tmp[1000], tmp2[1000];

+    char tmp[1000], tmp2[1000], line[1000];

     int i;

     const char *base[3]= { getenv("HOME"),

                            "/usr/local/share",

@@ -3743,8 +3743,11 @@ static int opt_preset(const char *opt, const char *arg)

     }

     while(!feof(f)){

-        int e= fscanf(f, "%999[^=]=%999[^\n]\n", tmp, tmp2);

-        if(e!=2){

+        int e= fscanf(f, "%999[^\n]\n", line) - 1;

+        if(line[0] == '#' && !e)

+            continue;

+        e|= sscanf(line, "%999[^=]=%999[^\n]\n", tmp, tmp2) - 2;

+        if(e){

             fprintf(stderr, "Preset file invalid\n");

             av_exit(1);

         }