diff options
-rw-r--r-- | libavfilter/vf_aspect.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavfilter/vf_aspect.c b/libavfilter/vf_aspect.c index 7869d22..8e19162 100644 --- a/libavfilter/vf_aspect.c +++ b/libavfilter/vf_aspect.c @@ -59,7 +59,7 @@ static av_cold int init(AVFilterContext *ctx, const char *args, const AVClass *c aspect->class = class; av_opt_set_defaults(aspect); - if (sscanf(args, "%d:%d%c", &q.num, &q.den, &c) == 2) { + if (args && sscanf(args, "%d:%d%c", &q.num, &q.den, &c) == 2) { aspect->ratio_str = av_strdup(args); av_log(ctx, AV_LOG_WARNING, "num:den syntax is deprecated, please use num/den or named options instead\n"); |