1 files changed, 31 insertions, 0 deletions
diff --git a/MediaBrowser.Api/Playback/Hls/BaseHlsService.cs b/MediaBrowser.Api/Playback/Hls/BaseHlsService.cs
index b2ffeca3d..5d377366a 100644
--- a/MediaBrowser.Api/Playback/Hls/BaseHlsService.cs
+++ b/MediaBrowser.Api/Playback/Hls/BaseHlsService.cs
@@ -4,6 +4,7 @@ using MediaBrowser.Controller.Devices;
 using MediaBrowser.Controller.Dlna;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.MediaEncoding;
+using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.Extensions;
 using MediaBrowser.Model.IO;
 using MediaBrowser.Model.Net;
@@ -310,5 +311,35 @@ namespace MediaBrowser.Api.Playback.Hls
         {
             return 0;
         }
+
+        protected override bool CanStreamCopyVideo(VideoStreamRequest request, MediaStream videoStream)
+        {
+            if (videoStream.KeyFrames == null || videoStream.KeyFrames.Count == 0)
+            {
+                Logger.Debug("Cannot stream copy video due to missing keyframe info");
+                return false;
+            }
+
+            var previousSegment = 0;
+            foreach (var frame in videoStream.KeyFrames)
+            {
+                var length = frame - previousSegment;
+
+                // Don't allow really long segments because this could result in long download times
+                if (length > 10000)
+                {
+                    Logger.Debug("Cannot stream copy video due to long segment length of {0}ms", length);
+                    return false;
+                }
+                previousSegment = frame;
+            }
+
+            return base.CanStreamCopyVideo(request, videoStream);
+        }
+
+        protected override bool CanStreamCopyAudio(VideoStreamRequest request, MediaStream audioStream, List<string> supportedAudioCodecs)
+        {
+            return false;
+        }
     }
 }