Add base code

internal/video/audio_extractor.go

@@ -0,0 +1,32 @@
+/*
+Copyright © 2024 Matteo Schiff <matteo@underdesk.net>
+
+*/
+
+package video
+
+import (
+	"os"
+
+	ffmpeg "github.com/u2takey/ffmpeg-go"
+)
+
+func ExtractVideo(videoFile string, audioFile string) {
+	if _, err := os.Stat(audioFile); err == nil {
+		// Audio already extracted, skip this step
+		return
+	}
+
+	// Use ffmpeg-go to extract audio at 16 kHz
+	ffmpeg.
+		Input(videoFile).
+		Output(audioFile, ffmpeg.KwArgs{
+			"ar": 16000, // Set audio sampling rate to 16 kHz
+			"ac": 1,     // Set the number of audio channels to 1 (mono)
+			//"f":                "segment", // Enable segmenting
+			//"segment_time":     600,       // Split files every 600 seconds (10 minutes)
+			//"reset_timestamps": 1,         // Reset timestamps in each segment
+		}).
+		OverWriteOutput(). // Overwrite if the output file already exists
+		Run()
+}