diff --git a/Emby.Drawing/ImageProcessor.cs b/Emby.Drawing/ImageProcessor.cs
index dc93cb7304..3288229a2f 100644
--- a/Emby.Drawing/ImageProcessor.cs
+++ b/Emby.Drawing/ImageProcessor.cs
@@ -163,7 +163,7 @@ namespace Emby.Drawing
             return _imageEncoder.SupportedOutputFormats;
         }
 
-        public async Task<Tuple<string, string>> ProcessImage(ImageProcessingOptions options)
+        public async Task<Tuple<string, string, DateTime>> ProcessImage(ImageProcessingOptions options)
         {
             if (options == null)
             {
@@ -178,14 +178,13 @@ namespace Emby.Drawing
             }
 
             var originalImagePath = originalImage.Path;
+            var dateModified = originalImage.DateModified;
 
             if (!_imageEncoder.SupportsImageEncoding)
             {
-                return new Tuple<string, string>(originalImagePath, MimeTypes.GetMimeType(originalImagePath));
+                return new Tuple<string, string, DateTime>(originalImagePath, MimeTypes.GetMimeType(originalImagePath), dateModified);
             }
 
-            var dateModified = originalImage.DateModified;
-
             if (options.CropWhiteSpace && _imageEncoder.SupportsImageEncoding)
             {
                 var tuple = await GetWhitespaceCroppedImage(originalImagePath, dateModified).ConfigureAwait(false);
@@ -211,7 +210,7 @@ namespace Emby.Drawing
             if (options.HasDefaultOptions(originalImagePath))
             {
                 // Just spit out the original file if all the options are default
-                return new Tuple<string, string>(originalImagePath, MimeTypes.GetMimeType(originalImagePath));
+                return new Tuple<string, string, DateTime>(originalImagePath, MimeTypes.GetMimeType(originalImagePath), dateModified);
             }
 
             ImageSize? originalImageSize;
@@ -221,7 +220,7 @@ namespace Emby.Drawing
                 if (options.HasDefaultOptions(originalImagePath, originalImageSize.Value))
                 {
                     // Just spit out the original file if all the options are default
-                    return new Tuple<string, string>(originalImagePath, MimeTypes.GetMimeType(originalImagePath));
+                    return new Tuple<string, string, DateTime>(originalImagePath, MimeTypes.GetMimeType(originalImagePath), dateModified);
                 }
             }
             catch
@@ -235,10 +234,6 @@ namespace Emby.Drawing
             var outputFormat = GetOutputFormat(options.SupportedOutputFormats[0]);
             var cacheFilePath = GetCacheFilePath(originalImagePath, newSize, quality, dateModified, outputFormat, options.AddPlayedIndicator, options.PercentPlayed, options.UnplayedCount, options.BackgroundColor, options.ForegroundLayer);
 
-            var semaphore = GetLock(cacheFilePath);
-
-            await semaphore.WaitAsync().ConfigureAwait(false);
-
             var imageProcessingLockTaken = false;
 
             try
@@ -251,15 +246,20 @@ namespace Emby.Drawing
                     var newHeight = Convert.ToInt32(newSize.Height);
 
                     _fileSystem.CreateDirectory(Path.GetDirectoryName(cacheFilePath));
+                    var tmpPath = Path.Combine(_appPaths.TempDirectory, Guid.NewGuid().ToString("N"));
+                    _fileSystem.CreateDirectory(Path.GetDirectoryName(tmpPath));
 
                     await _imageProcessingSemaphore.WaitAsync().ConfigureAwait(false);
 
                     imageProcessingLockTaken = true;
 
-                    _imageEncoder.EncodeImage(originalImagePath, cacheFilePath, AutoOrient(options.Item), newWidth, newHeight, quality, options, outputFormat);
+                    _imageEncoder.EncodeImage(originalImagePath, tmpPath, AutoOrient(options.Item), newWidth, newHeight, quality, options, outputFormat);
+                    CopyFile(tmpPath, cacheFilePath);
+
+                    return new Tuple<string, string, DateTime>(tmpPath, GetMimeType(outputFormat, cacheFilePath), _fileSystem.GetLastWriteTimeUtc(tmpPath));
                 }
 
-                return new Tuple<string, string>(cacheFilePath, GetMimeType(outputFormat, cacheFilePath));
+                return new Tuple<string, string, DateTime>(cacheFilePath, GetMimeType(outputFormat, cacheFilePath), _fileSystem.GetLastWriteTimeUtc(cacheFilePath));
             }
             catch (Exception ex)
             {
@@ -267,7 +267,7 @@ namespace Emby.Drawing
                 _logger.ErrorException("Error encoding image", ex);
 
                 // Just spit out the original file if all the options are default
-                return new Tuple<string, string>(originalImagePath, MimeTypes.GetMimeType(originalImagePath));
+                return new Tuple<string, string, DateTime>(originalImagePath, MimeTypes.GetMimeType(originalImagePath), dateModified);
             }
             finally
             {
@@ -275,8 +275,18 @@ namespace Emby.Drawing
                 {
                     _imageProcessingSemaphore.Release();
                 }
+            }
+        }
+
+        private void CopyFile(string src, string destination)
+        {
+            try
+            {
+                File.Copy(src, destination, true);
+            }
+            catch
+            {
 
-                semaphore.Release();
             }
         }
 
@@ -412,14 +422,9 @@ namespace Emby.Drawing
 
             var croppedImagePath = GetCachePath(CroppedWhitespaceImageCachePath, name, Path.GetExtension(originalImagePath));
 
-            var semaphore = GetLock(croppedImagePath);
-
-            await semaphore.WaitAsync().ConfigureAwait(false);
-
             // Check again in case of contention
             if (_fileSystem.FileExists(croppedImagePath))
             {
-                semaphore.Release();
                 return GetResult(croppedImagePath);
             }
 
@@ -428,11 +433,15 @@ namespace Emby.Drawing
             try
             {
                 _fileSystem.CreateDirectory(Path.GetDirectoryName(croppedImagePath));
+                var tmpPath = Path.Combine(_appPaths.TempDirectory, Guid.NewGuid().ToString("N"));
+                _fileSystem.CreateDirectory(Path.GetDirectoryName(tmpPath));
 
                 await _imageProcessingSemaphore.WaitAsync().ConfigureAwait(false);
                 imageProcessingLockTaken = true;
 
-                _imageEncoder.CropWhiteSpace(originalImagePath, croppedImagePath);
+                _imageEncoder.CropWhiteSpace(originalImagePath, tmpPath);
+                CopyFile(tmpPath, croppedImagePath);
+                return GetResult(tmpPath);
             }
             catch (NotImplementedException)
             {
@@ -452,11 +461,7 @@ namespace Emby.Drawing
                 {
                     _imageProcessingSemaphore.Release();
                 }
-
-                semaphore.Release();
             }
-
-            return GetResult(croppedImagePath);
         }
 
         private Tuple<string, DateTime> GetResult(string path)
diff --git a/MediaBrowser.Api/Images/ImageService.cs b/MediaBrowser.Api/Images/ImageService.cs
index a549c44bc1..5866ad15bc 100644
--- a/MediaBrowser.Api/Images/ImageService.cs
+++ b/MediaBrowser.Api/Images/ImageService.cs
@@ -638,6 +638,7 @@ namespace MediaBrowser.Api.Images
                 CacheDuration = cacheDuration,
                 ResponseHeaders = headers,
                 ContentType = imageResult.Item2,
+                DateLastModified = imageResult.Item3,
                 IsHeadRequest = isHeadRequest,
                 Path = imageResult.Item1,
 
diff --git a/MediaBrowser.Controller/Drawing/IImageProcessor.cs b/MediaBrowser.Controller/Drawing/IImageProcessor.cs
index d42a04f2ee..19f391b4a6 100644
--- a/MediaBrowser.Controller/Drawing/IImageProcessor.cs
+++ b/MediaBrowser.Controller/Drawing/IImageProcessor.cs
@@ -84,7 +84,7 @@ namespace MediaBrowser.Controller.Drawing
         /// </summary>
         /// <param name="options">The options.</param>
         /// <returns>Task.</returns>
-        Task<Tuple<string, string>> ProcessImage(ImageProcessingOptions options);
+        Task<Tuple<string, string, DateTime>> ProcessImage(ImageProcessingOptions options);
 
         /// <summary>
         /// Gets the enhanced image.
diff --git a/MediaBrowser.Server.Implementations/HttpServer/HttpResultFactory.cs b/MediaBrowser.Server.Implementations/HttpServer/HttpResultFactory.cs
index c520e43b8b..c0a2a5eb35 100644
--- a/MediaBrowser.Server.Implementations/HttpServer/HttpResultFactory.cs
+++ b/MediaBrowser.Server.Implementations/HttpServer/HttpResultFactory.cs
@@ -331,7 +331,11 @@ namespace MediaBrowser.Server.Implementations.HttpServer
                 options.ContentType = MimeTypes.GetMimeType(path);
             }
 
-            options.DateLastModified = _fileSystem.GetLastWriteTimeUtc(path);
+            if (!options.DateLastModified.HasValue)
+            {
+                options.DateLastModified = _fileSystem.GetLastWriteTimeUtc(path);
+            }
+
             var cacheKey = path + options.DateLastModified.Value.Ticks;
 
             options.CacheKey = cacheKey.GetMD5();