From a35b7a99c442060e8874b09d841954efde221502 Mon Sep 17 00:00:00 2001
From: DarthSim <darthsim@gmail.com>
Date: Thu, 10 Oct 2019 19:18:45 +0600
Subject: [PATCH] Convert image to RGB before watermarking

---
 process.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/process.go b/process.go
index 4c66c385..32582c58 100644
--- a/process.go
+++ b/process.go
@@ -248,6 +248,10 @@ func prepareWatermark(wm *vipsImage, wmData *imageData, opts *watermarkOptions,
 }
 
 func applyWatermark(img *vipsImage, wmData *imageData, opts *watermarkOptions, framesCount int) error {
+	if err := img.RgbColourspace(); err != nil {
+		return err
+	}
+
 	wm := new(vipsImage)
 	defer wm.Clear()