Init

server/utils/hlsPlaylistGenerator.js

@@ -0,0 +1,30 @@
+const fs = require('fs-extra')
+
+function getPlaylistStr(segmentName, duration, segmentLength) {
+  var lines = [
+    '#EXTM3U',
+    '#EXT-X-VERSION:3',
+    '#EXT-X-ALLOW-CACHE:NO',
+    '#EXT-X-TARGETDURATION:6',
+    '#EXT-X-MEDIA-SEQUENCE:0',
+    '#EXT-X-PLAYLIST-TYPE:VOD'
+  ]
+  var numSegments = Math.floor(duration / segmentLength)
+  var lastSegment = duration - (numSegments * segmentLength)
+  for (let i = 0; i < numSegments; i++) {
+    lines.push(`#EXTINF:6,`)
+    lines.push(`${segmentName}-${i}.ts`)
+  }
+  if (lastSegment > 0) {
+    lines.push(`#EXTINF:${lastSegment},`)
+    lines.push(`${segmentName}-${numSegments}.ts`)
+  }
+  lines.push('#EXT-X-ENDLIST')
+  return lines.join('\n')
+}
+
+function generatePlaylist(outputPath, segmentName, duration, segmentLength) {
+  var playlistStr = getPlaylistStr(segmentName, duration, segmentLength)
+  return fs.writeFile(outputPath, playlistStr)
+}
+module.exports = generatePlaylist