@@ -435,7 +435,7 @@ void set_context_opts(void *ctx, void *opts_ctx, int flags, AVCodec *codec)

         const char *str;

         if (priv_ctx) {

             if (av_find_opt(priv_ctx, opt_names[i], NULL, flags, flags)) {

-                if (av_set_string3(priv_ctx, opt_names[i], opt_values[i], 0, NULL) < 0) {

+                if (av_set_string3(priv_ctx, opt_names[i], opt_values[i], 1, NULL) < 0) {

                     fprintf(stderr, "Invalid value '%s' for option '%s'\n",

                             opt_names[i], opt_values[i]);

                     exit(1);

@@ -35,13 +35,13 @@ typedef struct X264Context {

     uint8_t        *sei;

     int             sei_size;

     AVFrame         out_pic;

-    const char *preset;

-    const char *tune;

-    const char *profile;

-    const char *level;

+    char *preset;

+    char *tune;

+    char *profile;

+    char *level;

     int fastfirstpass;

-    const char *stats;

-    const char *weightp;

+    char *stats;

+    char *weightp;

 } X264Context;

 static void X264_log(void *p, int level, const char *fmt, va_list args)

@@ -163,6 +163,13 @@ static av_cold int X264_close(AVCodecContext *avctx)

     if (x4->enc)

         x264_encoder_close(x4->enc);

+    av_free(x4->preset);

+    av_free(x4->tune);

+    av_free(x4->profile);

+    av_free(x4->level);

+    av_free(x4->stats);

+    av_free(x4->weightp);

+

     return 0;

 }

@@ -185,7 +192,7 @@ static void check_default_settings(AVCodecContext *avctx)

     score += x4->params.analyse.inter == 0 && x4->params.analyse.i_subpel_refine == 8;

     if (score >= 5) {

         av_log(avctx, AV_LOG_ERROR, "Default settings detected, using medium profile\n");

-        x4->preset = "medium";

+        x4->preset = av_strdup("medium");

         if (avctx->bit_rate == 200*100)

             avctx->crf = 23;

     }