avfilter/vf_readeia608: check if gaps between clock bits are big enough

Should help finding less false positives.
2019-12-23 19:56:05 +01:00 · 2019-12-23 19:56:05 +01:00 · 94682555c6
parent 16968b619d
commit 94682555c6
1 changed files with 2 additions and 1 deletions
--- a/libavfilter/vf_readeia608.c
+++ b/libavfilter/vf_readeia608.c
@ -325,7 +325,8 @@ static void extract_line(AVFilterContext *ctx, AVFrame *in, int w, int nb_line)

    bit_size /= 19.f;
    for (i = 1; i < 14; i++) {
-        if (s->code[i].size > bit_size * 1.5f) {
+        if (s->code[i].size > bit_size * 1.5f ||
+            s->code[i].size < bit_size * 0.2f) {
            return;
        }
    }