From a9bc1312c1b84351db7a0045d0cdf7871c759e0e Mon Sep 17 00:00:00 2001
From: itsmattkc <itsmattkc@gmail.com>
Date: Mon, 16 Nov 2020 01:34:20 +1100
Subject: [PATCH] don't show associated alpha option if footage has no alpha

---
 .../streamproperties/videostreamproperties.cpp         | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/app/dialog/footageproperties/streamproperties/videostreamproperties.cpp b/app/dialog/footageproperties/streamproperties/videostreamproperties.cpp
index b9bf9112d..f6ebfcfcc 100644
--- a/app/dialog/footageproperties/streamproperties/videostreamproperties.cpp
+++ b/app/dialog/footageproperties/streamproperties/videostreamproperties.cpp
@@ -77,11 +77,13 @@ VideoStreamProperties::VideoStreamProperties(VideoStreamPtr stream) :
 
   video_layout->addWidget(video_color_space_, row, 1);
 
-  row++;
+  if (stream->channel_count() == VideoParams::kRGBAChannelCount) {
+    row++;
 
-  video_premultiply_alpha_ = new QCheckBox(tr("Premultiplied Alpha"));
-  video_premultiply_alpha_->setChecked(stream_->premultiplied_alpha());
-  video_layout->addWidget(video_premultiply_alpha_, row, 0, 1, 2);
+    video_premultiply_alpha_ = new QCheckBox(tr("Premultiplied Alpha"));
+    video_premultiply_alpha_->setChecked(stream_->premultiplied_alpha());
+    video_layout->addWidget(video_premultiply_alpha_, row, 0, 1, 2);
+  }
 
   row++;