Simplify condition check

Signed-off-by: gnattu <gnattuoc@me.com>

MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs

@@ -814,10 +814,9 @@ namespace MediaBrowser.MediaEncoding.Encoder
             var options = allowHwAccel ? _configurationManager.GetEncodingOptions() : new EncodingOptions();
             threads ??= _threads;
 
-            if (enableKeyFrameOnlyExtraction)
+            if (allowHwAccel && enableKeyFrameOnlyExtraction)
             {
-                var supportsKeyFrameOnly = !allowHwAccel
-                                           || (string.Equals(options.HardwareAccelerationType, "nvenc", StringComparison.OrdinalIgnoreCase) && options.EnableEnhancedNvdecDecoder)
+                var supportsKeyFrameOnly = (string.Equals(options.HardwareAccelerationType, "nvenc", StringComparison.OrdinalIgnoreCase) && options.EnableEnhancedNvdecDecoder)
                                            || (string.Equals(options.HardwareAccelerationType, "amf", StringComparison.OrdinalIgnoreCase) && OperatingSystem.IsWindows() && options.PreferSystemNativeHwDecoder)
                                            || (string.Equals(options.HardwareAccelerationType, "qsv", StringComparison.OrdinalIgnoreCase) && options.PreferSystemNativeHwDecoder)
                                            || string.Equals(options.HardwareAccelerationType, "vaapi", StringComparison.OrdinalIgnoreCase)