add warning about qsv

dashboard-ui/scripts/encodingsettings.js

@@ -20,10 +20,12 @@
     }
 
     function onSubmit() {
-        Dashboard.showLoadingMsg();
 
         var form = this;
 
+        var onDecoderConfirmed = function() {
+            Dashboard.showLoadingMsg();
+
             ApiClient.getNamedConfiguration("encoding").then(function (config) {
 
                 config.EnableDebugLogging = $('#chkEnableDebugEncodingLogging', form).checked();
@@ -36,6 +38,20 @@
 
                 ApiClient.updateNamedConfiguration("encoding", config).then(Dashboard.processServerConfigurationUpdateResult);
             });
+        };
+
+        if ($('#selectVideoDecoder', form).val()) {
+
+            Dashboard.alert({
+                callback: onDecoderConfirmed,
+                title: Globalize.translate('TitleHardwareAcceleration'),
+                message: Globalize.translate('HardwareAccelerationWarning')
+            });
+
+        } else {
+            onDecoderConfirmed();
+        }
+
 
         // Disable default form submission
         return false;

dashboard-ui/strings/javascript/javascript.json

@@ -955,5 +955,7 @@
     "HeaderCinemaMode": "Cinema Mode",
     "CinemaModeFeatureDescription": "Cinema Mode gives you the true cinema experience with trailers and custom intros before the feature.",
     "CoverArt": "Cover Art",
-    "ButtonOff": "Off"
+    "ButtonOff": "Off",
+    "TitleHardwareAcceleration": "Hardware Acceleration",
+    "HardwareAccelerationWarning": "Enabling hardware acceleration may cause instability in some environments. If you have difficulty playing video after enabling this, you'll need to change the setting back to Auto."
 }