1 files changed, 1 insertions, 1 deletions
diff --git a/MediaBrowser.Api/Playback/Progressive/VideoService.cs b/MediaBrowser.Api/Playback/Progressive/VideoService.cs
index 6054a245b..3319fbaec 100644
--- a/MediaBrowser.Api/Playback/Progressive/VideoService.cs
+++ b/MediaBrowser.Api/Playback/Progressive/VideoService.cs
@@ -139,7 +139,7 @@ namespace MediaBrowser.Api.Playback.Progressive
 
             if (string.Equals(videoCodec, "copy", StringComparison.OrdinalIgnoreCase))
             {
-                if (state.VideoStream != null && IsH264(state.VideoStream) && string.Equals(state.OutputContainer, "ts", StringComparison.OrdinalIgnoreCase) && !string.IsNullOrWhiteSpace(state.VideoStream.NalLengthSize))
+                if (state.VideoStream != null && IsH264(state.VideoStream) && string.Equals(state.OutputContainer, "ts", StringComparison.OrdinalIgnoreCase) && !string.Equals(state.VideoStream.NalLengthSize, "0", StringComparison.OrdinalIgnoreCase))
                 {
                     Logger.Debug("Enabling h264_mp4toannexb due to nal_length_size of {0}", state.VideoStream.NalLengthSize);
                     args += " -bsf:v h264_mp4toannexb";