minor hls segmenter improvements (#593)

CHANGELOG.md

@@ -13,6 +13,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
   - omitting the `mode` parameter returns each channel as configured
 - Link `File Not Found` health check to `Trash` page to allow deletion
 
+### Changed
+- Minor HLS Segmenter improvements
+
 ## [0.3.8-alpha] - 2022-01-23
 ### Fixed
 - Fix issue preventing some versions of ffmpeg (usually 4.4.x) from streaming MPEG-TS (Legacy) channels at all

ErsatzTV.Core/FFmpeg/FFmpegProcessBuilder.cs

@@ -425,7 +425,9 @@ namespace ErsatzTV.Core.FFmpeg
                     "-segment_list_flags", "+live",
                     "-hls_segment_filename",
                     Path.Combine(FileSystemLayout.TranscodeFolder, channelNumber, "live%06d.ts"),
-                    "-hls_flags", "program_date_time+append_list+omit_endlist+independent_segments",
+                    "-hls_flags", "program_date_time+append_list+discont_start+omit_endlist+independent_segments",
+                    "-mpegts_flags", "+initial_discontinuity",
+                    "-mpegts_copyts", "1",
                     Path.Combine(FileSystemLayout.TranscodeFolder, channelNumber, "live.m3u8")
                 });