ret = av_sscanf(arg, "%d%c", &d->delay, &type);
if (ret != 2 || type != 'S') {
div = type == 's' ? 1.0 : 1000.0;
- av_sscanf(arg, "%f", &delay);
+ if (av_sscanf(arg, "%f", &delay) != 1) {
+ av_log(ctx, AV_LOG_ERROR, "Invalid syntax for delay.\n");
+ return AVERROR(EINVAL);
+ }
d->delay = delay * inlink->sample_rate / div;
}