--- a/export/export_ffmpeg.c	
+++ a/export/export_ffmpeg.c	
@@ -851,7 +851,7 @@ MOD_init
     lavc_venc_context->rc_qsquish         = lavc_param_rc_qsquish;
     lavc_venc_context->rc_qmod_amp        = lavc_param_rc_qmod_amp;
     lavc_venc_context->rc_qmod_freq       = lavc_param_rc_qmod_freq;
-    lavc_venc_context->rc_eq              = lavc_param_rc_eq;
+    lavc_venc_context->rc_eq              = av_strdup(lavc_param_rc_eq);
     lavc_venc_context->rc_max_rate        = lavc_param_rc_max_rate * 1000;
     lavc_venc_context->rc_min_rate        = lavc_param_rc_min_rate * 1000;
     lavc_venc_context->rc_buffer_size     = lavc_param_rc_buffer_size * 1024;