diff --git a/src/ext/conf/ExtensionConf.js b/src/ext/conf/ExtensionConf.js
index 0a688dc..9811230 100644
--- a/src/ext/conf/ExtensionConf.js
+++ b/src/ext/conf/ExtensionConf.js
@@ -55,7 +55,7 @@ var ExtensionConf = {
       treshold: 16,           // if pixel is darker than the sum of black level and this value, we count it as black
                               // on 0-255. Needs to be fairly high (8 might not cut it) due to compression
                               // artifacts in the video itself
-      imageTreshold: 8,       // in order to detect pixel as "not black", the pixel must be brighter than
+      imageTreshold: 4,       // in order to detect pixel as "not black", the pixel must be brighter than
                               // the sum of black level, treshold and this value.
       gradientTreshold: 2,    // When trying to determine thickness of the black bars, we take 2 values: position of
                               // the last pixel that's darker than our treshold, and position of the first pixel that's
diff --git a/src/ext/lib/ar-detect/edge-detect/EdgeDetect.js b/src/ext/lib/ar-detect/edge-detect/EdgeDetect.js
index c0328cb..2cf48cc 100644
--- a/src/ext/lib/ar-detect/edge-detect/EdgeDetect.js
+++ b/src/ext/lib/ar-detect/edge-detect/EdgeDetect.js
@@ -548,7 +548,7 @@ class EdgeDetect{
                 image[tmpI + 1] > this.blackbarTreshold ||
                 image[tmpI + 2] > this.blackbarTreshold ){
               
-              colsOut[c].black = (i / this.conf.canvasImageDataRowLength);
+              colsOut[c].black = (i / this.conf.canvasImageDataRowLength) - 1;
               colsOut[c].col = colsIn[c].value;
               colsIn[c].blackFound = 1;
               console.log("BLACK FOUND AT COL:", colsIn[c].value, '|', colsOut[c].col, "LINE:", colsOut[c].black, colsOut, colsOut[c])