lavf: add a forgotten NULL check in convert_format_parameters().

14 years ago · 84bd2b4bf5
parent ed63f527f2
commit 84bd2b4bf5
1 changed files with 3 additions and 0 deletions
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@ -395,6 +395,9 @@ static AVDictionary *convert_format_parameters(AVFormatParameters *ap)
    char buf[1024];
    AVDictionary *opts = NULL;

+    if (!ap)
+        return NULL;
+
    if (ap->time_base.num) {
        snprintf(buf, sizeof(buf), "%d/%d", ap->time_base.den, ap->time_base.num);
        av_dict_set(&opts, "framerate", buf, 0);