From 06394d1a9f12d8a2689d6f071a6e030cbc715659 Mon Sep 17 00:00:00 2001
From: Luke Pulverenti <luke.pulverenti@gmail.com>
Date: Fri, 31 Mar 2017 15:05:19 -0400
Subject: [PATCH] add break on non keyframes

---
 MediaBrowser.Api/Playback/Hls/DynamicHlsService.cs | 10 ++++++++--
 MediaBrowser.Api/Playback/StreamRequest.cs         |  1 +
 MediaBrowser.Model/Dlna/StreamBuilder.cs           |  2 ++
 MediaBrowser.Model/Dlna/StreamInfo.cs              |  3 +++
 MediaBrowser.Model/Dlna/TranscodingProfile.cs      |  3 +++
 5 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/MediaBrowser.Api/Playback/Hls/DynamicHlsService.cs b/MediaBrowser.Api/Playback/Hls/DynamicHlsService.cs
index 5eea7598b2..1b6d55e331 100644
--- a/MediaBrowser.Api/Playback/Hls/DynamicHlsService.cs
+++ b/MediaBrowser.Api/Playback/Hls/DynamicHlsService.cs
@@ -912,7 +912,12 @@ namespace MediaBrowser.Api.Playback.Hls
                     segmentFormat = "mpegts";
                 }
 
-                return string.Format("{0} {1} -map_metadata -1 -map_chapters -1 -threads {2} {3} {4} {5} -f segment -max_delay 5000000 -avoid_negative_ts disabled -start_at_zero -segment_time {6} {10} -individual_header_trailer 0 -segment_format {11} -segment_list_type m3u8 -segment_start_number {7} -segment_list \"{8}\" -y \"{9}\"",
+                var videoCodec = EncodingHelper.GetVideoEncoder(state, ApiEntryPoint.Instance.GetEncodingOptions());
+                var breakOnNonKeyFrames = state.Request.BreakOnNonKeyFrames && string.Equals(videoCodec, "copy", StringComparison.OrdinalIgnoreCase);
+
+                var breakOnNonKeyFramesArg = breakOnNonKeyFrames ? " -break_non_keyframes 1" : "";
+
+                return string.Format("{0} {1} -map_metadata -1 -map_chapters -1 -threads {2} {3} {4} {5} -f segment -max_delay 5000000 -avoid_negative_ts disabled -start_at_zero -segment_time {6} {10} -individual_header_trailer 0{12} -segment_format {11} -segment_list_type m3u8 -segment_start_number {7} -segment_list \"{8}\" -y \"{9}\"",
                     inputModifier,
                     EncodingHelper.GetInputArgument(state, encodingOptions),
                     threads,
@@ -924,7 +929,8 @@ namespace MediaBrowser.Api.Playback.Hls
                     outputPath,
                     outputTsArg,
                     timeDeltaParam,
-                    segmentFormat
+                    segmentFormat,
+                    breakOnNonKeyFramesArg
                 ).Trim();
             }
 
diff --git a/MediaBrowser.Api/Playback/StreamRequest.cs b/MediaBrowser.Api/Playback/StreamRequest.cs
index 551dbf378e..ecb6350cdf 100644
--- a/MediaBrowser.Api/Playback/StreamRequest.cs
+++ b/MediaBrowser.Api/Playback/StreamRequest.cs
@@ -43,6 +43,7 @@ namespace MediaBrowser.Api.Playback
 
         public int? SegmentLength { get; set; }
         public int? MinSegments { get; set; }
+        public bool BreakOnNonKeyFrames { get; set; }
     }
 
     public class VideoStreamRequest : StreamRequest
diff --git a/MediaBrowser.Model/Dlna/StreamBuilder.cs b/MediaBrowser.Model/Dlna/StreamBuilder.cs
index 36df67b34e..1202389675 100644
--- a/MediaBrowser.Model/Dlna/StreamBuilder.cs
+++ b/MediaBrowser.Model/Dlna/StreamBuilder.cs
@@ -484,6 +484,8 @@ namespace MediaBrowser.Model.Dlna
                 playlistItem.CopyTimestamps = transcodingProfile.CopyTimestamps;
                 playlistItem.EnableSubtitlesInManifest = transcodingProfile.EnableSubtitlesInManifest;
 
+                playlistItem.BreakOnNonKeyFrames = transcodingProfile.BreakOnNonKeyFrames;
+
                 if (transcodingProfile.MinSegments > 0)
                 {
                     playlistItem.MinSegments = transcodingProfile.MinSegments;
diff --git a/MediaBrowser.Model/Dlna/StreamInfo.cs b/MediaBrowser.Model/Dlna/StreamInfo.cs
index 5705e6477d..2c009b37ff 100644
--- a/MediaBrowser.Model/Dlna/StreamInfo.cs
+++ b/MediaBrowser.Model/Dlna/StreamInfo.cs
@@ -40,6 +40,7 @@ namespace MediaBrowser.Model.Dlna
 
         public int? SegmentLength { get; set; }
         public int? MinSegments { get; set; }
+        public bool BreakOnNonKeyFrames { get; set; }
 
         public bool RequireAvc { get; set; }
         public bool DeInterlace { get; set; }
@@ -305,6 +306,8 @@ namespace MediaBrowser.Model.Dlna
                 {
                     list.Add(new NameValuePair("MinSegments", item.MinSegments.Value.ToString(CultureInfo.InvariantCulture)));
                 }
+
+                list.Add(new NameValuePair("BreakOnNonKeyFrames", item.BreakOnNonKeyFrames.ToString()));
             }
 
             return list;
diff --git a/MediaBrowser.Model/Dlna/TranscodingProfile.cs b/MediaBrowser.Model/Dlna/TranscodingProfile.cs
index 350556e90b..9623a68b08 100644
--- a/MediaBrowser.Model/Dlna/TranscodingProfile.cs
+++ b/MediaBrowser.Model/Dlna/TranscodingProfile.cs
@@ -48,6 +48,9 @@ namespace MediaBrowser.Model.Dlna
         [XmlAttribute("segmentLength")]
         public int SegmentLength { get; set; }
 
+        [XmlAttribute("breakOnNonKeyFrames")]
+        public bool BreakOnNonKeyFrames { get; set; }
+
         public List<string> GetAudioCodecs()
         {
             List<string> list = new List<string>();