Implement GenerateMasterPlaylist function for HLS video processing; update video handler to call the new function

Author: Prateet-Github

.gitignore

@@ -33,4 +33,6 @@ go.work.sum
 temp/
 
 bin/
-dist/
+dist/
+
+index.html

internal/ffmpeg/master_playlist.go

@@ -0,0 +1,26 @@
+package ffmpeg
+
+import (
+	"os"
+	"path/filepath"
+)
+
+func (s *Service) GenerateMasterPlaylist(outputDir string) error {
+
+	content := `#EXTM3U
+#EXT-X-VERSION:3
+
+#EXT-X-STREAM-INF:BANDWIDTH=5000000,RESOLUTION=1920x1080
+1080p/index.m3u8
+
+#EXT-X-STREAM-INF:BANDWIDTH=2800000,RESOLUTION=1280x720
+720p/index.m3u8
+
+#EXT-X-STREAM-INF:BANDWIDTH=1400000,RESOLUTION=854x480
+480p/index.m3u8
+`
+
+	path := filepath.Join(outputDir, "master.m3u8")
+
+	return os.WriteFile(path, []byte(content), 0644)
+}

internal/handlers/video.go

@@ -113,6 +113,12 @@ func (h *VideoHandler) ProcessVideo(
 
 	log.Println("HLS generated")
 
+	if err := h.ffmpeg.GenerateMasterPlaylist(outputDir); err != nil {
+		return err
+	}
+
+	log.Println("Master playlist generated")
+
 	thumbnailPath := filepath.Join(
 		workspace,
 		"thumbnail.jpg",