import ffmpeg from "fluent-ffmpeg";
import path from "path";
import("@ffmpeg-installer/ffmpeg");
import fs from "fs-extra";
import { logger } from "../logger";
import { MusicManager } from "../short-creator/music";
import { Config } from "../config";
async function normalize(inputPath: string, outputPath: string) {
return new Promise((resolve, reject) => {
ffmpeg()
.input(inputPath)
.audioCodec("libmp3lame")
.audioBitrate(96)
.audioChannels(2)
.audioFrequency(44100)
.audioFilter("loudnorm,volume=0.1")
.toFormat("mp3")
.on("error", (err) => {
logger.error(err, "Error normalizing audio:");
reject(err);
})
.save(outputPath)
.on("end", () => {
logger.debug("Audio normalization complete");
resolve(outputPath);
});
});
}
export async function normalizeMusic() {
const config = new Config();
const musicManager = new MusicManager(config);
try {
musicManager.ensureMusicFilesExist();
} catch (error: unknown) {
logger.error(error, "Missing music files");
process.exit(1);
}
const musicFiles = musicManager.musicList();
const normalizedDir = path.join(config.musicDirPath, "normalized");
fs.ensureDirSync(normalizedDir);
for (const musicFile of musicFiles) {
const inputPath = path.join(config.musicDirPath, musicFile.file);
const outputPath = path.join(normalizedDir, musicFile.file);
logger.debug({ inputPath, outputPath }, "Normalizing music file");
await normalize(inputPath, outputPath);
}
}
normalizeMusic()
.then(() => {
logger.info(
"Music normalization completed successfully - make sure to replace the original files with the normalized ones",
);
})
.catch((error: unknown) => {
logger.error(error, "Error normalizing music files");
});
