WebKit export of https://bugs.webkit.org/show_bug.cgi?id=259496 (#42661)
diff --git a/webcodecs/video-encoder-utils.js b/webcodecs/video-encoder-utils.js
index 7201e05..855531a 100644
--- a/webcodecs/video-encoder-utils.js
+++ b/webcodecs/video-encoder-utils.js
@@ -37,8 +37,8 @@
// later. This is an analog of the most basic bar code.
function putBlackDots(ctx, width, height, count) {
ctx.fillStyle = 'black';
- const dot_size = 10;
- const step = dot_size * 3;
+ const dot_size = 20;
+ const step = dot_size * 2;
for (let i = 1; i <= count; i++) {
let x = i * step;
@@ -55,8 +55,8 @@
let cnv = new OffscreenCanvas(width, height);
var ctx = cnv.getContext('2d');
ctx.drawImage(frame, 0, 0);
- const dot_size = 10;
- const step = dot_size * 3;
+ const dot_size = 20;
+ const step = dot_size * 2;
for (let i = 1; i <= count; i++) {
let x = i * step + dot_size / 2;
@@ -69,7 +69,7 @@
y = y -1;
let rgba = ctx.getImageData(x, y, 2, 2).data;
- const tolerance = 40;
+ const tolerance = 60;
if ((rgba[0] > tolerance || rgba[1] > tolerance || rgba[2] > tolerance)
&& (rgba[4] > tolerance || rgba[5] > tolerance || rgba[6] > tolerance)
&& (rgba[8] > tolerance || rgba[9] > tolerance || rgba[10] > tolerance)
