From 29443bd61f97c8980e24b92992bdb4fcf99636ed Mon Sep 17 00:00:00 2001
From: Scott <scott@ausocean.org>
Date: Tue, 31 Dec 2019 15:30:51 +1030
Subject: [PATCH] filter/mog.go: handles error from IMGDecode

---
 filter/mog.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/filter/mog.go b/filter/mog.go
index 283ea034..5dacbfca 100644
--- a/filter/mog.go
+++ b/filter/mog.go
@@ -29,6 +29,7 @@ LICENSE
 package filter
 
 import (
+	"fmt"
 	"image"
 	"image/color"
 	"io"
@@ -74,7 +75,10 @@ func (m *MOGFilter) Close() error {
 // Write applies the motion filter to the video stream. Only frames with motion
 // are written to the destination encoder, frames without are discarded.
 func (m *MOGFilter) Write(f []byte) (int, error) {
-	img, _ := gocv.IMDecode(f, gocv.IMReadColor)
+	img, err := gocv.IMDecode(f, gocv.IMReadColor)
+	if err != nil {
+		return -1, fmt.Errorf("image can't be decoded: %w", err)
+	}
 	defer img.Close()
 
 	imgDelta := gocv.NewMat()