update hls params

MediaBrowser.Api/Playback/BaseStreamingService.cs

@@ -395,8 +395,6 @@ namespace MediaBrowser.Api.Playback
                 {
                     param += " -crf 23";
                 }
-
-                param += " -tune zerolatency";
             }
 
             else if (string.Equals(videoEncoder, "libx265", StringComparison.OrdinalIgnoreCase))
@@ -536,6 +534,11 @@ namespace MediaBrowser.Api.Playback
                 }
             }
 
+            if (string.Equals(videoEncoder, "libx264", StringComparison.OrdinalIgnoreCase))
+            {
+                param += " -x264opts:0 subme=0:rc_lookahead=10:me_range=4:me=dia:no_chroma_me:8x8dct=0:partitions=none";
+            }
+
             if (!string.Equals(videoEncoder, "h264_omx", StringComparison.OrdinalIgnoreCase) &&
                 !string.Equals(videoEncoder, "h264_qsv", StringComparison.OrdinalIgnoreCase) &&
                 !string.Equals(videoEncoder, "h264_vaapi", StringComparison.OrdinalIgnoreCase))

MediaBrowser.Api/Playback/Hls/DynamicHlsService.cs

@@ -348,6 +348,8 @@ namespace MediaBrowser.Api.Playback.Hls
                 return;
             }
 
+            Logger.Debug("Deleting partial HLS file {0}", file.FullName);
+
             try
             {
                 FileSystem.DeleteFile(file.FullName);
@@ -723,7 +725,7 @@ namespace MediaBrowser.Api.Playback.Hls
 
             foreach (var length in segmentLengths)
             {
-                builder.AppendLine("#EXTINF:" + length.ToString("0.0000", UsCulture) + ",");
+                builder.AppendLine("#EXTINF:" + length.ToString("0.0000", UsCulture) + ", nodesc");
 
                 builder.AppendLine(string.Format("hls1/{0}/{1}{2}{3}",
 
@@ -826,7 +828,7 @@ namespace MediaBrowser.Api.Playback.Hls
                     args += " -bsf:v h264_mp4toannexb";
                 }
 
-                args += " -flags -global_header";
+                //args += " -flags -global_header";
             }
             else
             {
@@ -851,7 +853,7 @@ namespace MediaBrowser.Api.Playback.Hls
                     args += GetGraphicalSubtitleParam(state, codec);
                 }
 
-                args += " -flags -global_header";
+                //args += " -flags -global_header";
             }
 
             if (EnableCopyTs(state) && args.IndexOf("-copyts", StringComparison.OrdinalIgnoreCase) == -1)
@@ -875,27 +877,25 @@ namespace MediaBrowser.Api.Playback.Hls
             var inputModifier = GetInputModifier(state, false);
 
             // If isEncoding is true we're actually starting ffmpeg
-            var startNumberParam = isEncoding ? GetStartNumber(state).ToString(UsCulture) : "0";
-
-            var toTimeParam = string.Empty;
-            var timestampOffsetParam = string.Empty;
-
-            if (state.IsOutputVideo && !EnableCopyTs(state) && !string.Equals(state.OutputVideoCodec, "copy", StringComparison.OrdinalIgnoreCase) && (state.Request.StartTimeTicks ?? 0) > 0)
-            {
-                timestampOffsetParam = " -output_ts_offset " + MediaEncoder.GetTimeParameter(state.Request.StartTimeTicks ?? 0);
-            }
+            var startNumber = GetStartNumber(state);
+            var startNumberParam = isEncoding ? startNumber.ToString(UsCulture) : "0";
 
             var mapArgs = state.IsOutputVideo ? GetMapArgs(state) : string.Empty;
-            var enableSplittingOnNonKeyFrames = string.Equals(state.OutputVideoCodec, "copy", StringComparison.OrdinalIgnoreCase) && false;
-
-            // TODO: check libavformat version for 57 50.100 and use -hls_flags split_by_time
-            var hlsProtocolSupportsSplittingByTime = false;
+            var useGenericSegmenter = true;
 
-            if (enableSplittingOnNonKeyFrames && !hlsProtocolSupportsSplittingByTime)
+            if (useGenericSegmenter)
             {
                 var outputTsArg = Path.Combine(Path.GetDirectoryName(outputPath), Path.GetFileNameWithoutExtension(outputPath)) + "%d" + GetSegmentFileExtension(state);
 
-                return string.Format("{0} {10} {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} -break_non_keyframes  1 -segment_format mpegts -segment_list_type m3u8 -segment_start_number {7} -segment_list \"{8}\" -y \"{9}\"",
+                var timeDeltaParam = String.Empty;
+
+                if (isEncoding && startNumber > 0)
+                {
+                    var startTime = state.SegmentLength * startNumber;
+                    timeDeltaParam = string.Format("-segment_time_delta -{0}", startTime);
+                }
+
+                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 mpegts -segment_list_type m3u8 -segment_start_number {7} -segment_list \"{8}\" -y \"{9}\"",
                     inputModifier,
                     GetInputArgument(state),
                     threads,
@@ -906,27 +906,21 @@ namespace MediaBrowser.Api.Playback.Hls
                     startNumberParam,
                     outputPath,
                     outputTsArg,
-                            toTimeParam
-                    ).Trim();
+                    timeDeltaParam
+                ).Trim();
             }
 
-            var splitByTime = hlsProtocolSupportsSplittingByTime && enableSplittingOnNonKeyFrames;
-            var splitByTimeArg = splitByTime ? " -hls_flags split_by_time" : "";
-
-            return string.Format("{0}{12} {1} -map_metadata -1 -map_chapters -1 -threads {2} {3} {4}{5} {6} -max_delay 5000000 -avoid_negative_ts disabled -start_at_zero -hls_time {7}{8} -start_number {9} -hls_list_size {10} -y \"{11}\"",
+            return string.Format("{0} {1} -map_metadata -1 -map_chapters -1 -threads {2} {3} {4} {5} -max_delay 5000000 -avoid_negative_ts disabled -start_at_zero -hls_time {6} -individual_header_trailer 0 -start_number {7} -hls_list_size {8} -y \"{9}\"",
                             inputModifier,
                             GetInputArgument(state),
                             threads,
                             mapArgs,
                             GetVideoArguments(state),
-                            timestampOffsetParam,
                             GetAudioArguments(state),
                             state.SegmentLength.ToString(UsCulture),
-                            splitByTimeArg,
                             startNumberParam,
                             state.HlsListSize.ToString(UsCulture),
-                            outputPath,
-                            toTimeParam
+                            outputPath
                             ).Trim();
         }