Specify some ogg encoder options

src/Converter.ts

@@ -2,7 +2,7 @@ import * as child_process from 'child_process';
 import * as fs from 'fs';
 import * as log from './log';
 
-export function convert(inFilename: string, outFilename: string, encoder: string, args: Array<string> = null): Promise<boolean> {
+export function convert(inFilename: string, outFilename: string, encoder: string, args: Array<string> = []): Promise<boolean> {
 	return new Promise((resolve, reject) => {
 		if (fs.existsSync(outFilename.toString()) && fs.statSync(outFilename.toString()).mtime.getTime() > fs.statSync(inFilename.toString()).mtime.getTime()) {
 			resolve(true);
@@ -18,27 +18,25 @@ export function convert(inFilename: string, outFilename: string, encoder: string
 		let firstspace = encoder.indexOf(' ', dirend);
 		let exe = encoder.substr(0, firstspace);
 		let parts = encoder.substr(firstspace + 1).split(' ');
-		let options: string[] = [];
-		for (let i = 0; i < parts.length; ++i) {
-			let foundarg = false;
-			if (args !== null) {
-				for (let arg in args) {
-					if (parts[i] === '{' + arg + '}') {
-						options.push(args[arg]);
-						foundarg = true;
-						break;
-					}
-				}
+		let options: string[] = parts.map(part => {
+			// finds {i} in encoder parts and replaces with args[i] if they are specified
+			for (let i = 0; i < args.length; i++) {
+				if (part === '{' + i + '}') return args[i];
 			}
-			if (foundarg) continue;
 
-			if (parts[i] === '{in}') options.push(inFilename.toString());
-			else if (parts[i] === '{out}') options.push(outFilename.toString());
-			else options.push(parts[i]);
-		}
+			if (part == '{ffmpeg_ogg_options}') {
+				return ['-c:a', 'libvorbis', '-vn'];
+			}
+			if (part === '{in}') return inFilename.toString();
+			if (part === '{out}') return outFilename.toString();
+
+			return part;
+		}).flat().filter(option => option != undefined);
+
 		if (fs.existsSync(outFilename.toString())) {
 			fs.unlinkSync(outFilename.toString());
 		}
+
 		// About stdio ignore: https://stackoverflow.com/a/20792428
 		let process = child_process.spawn(exe, options, {
 			stdio: ['ignore', 'ignore', 'pipe'] // don't ignore stderr

src/main.ts

@@ -720,7 +720,7 @@ export async function run(options: Options, loglog: any): Promise<string> {
 	}
 
 	if (!options.ogg && options.ffmpeg) {
-		options.ogg = options.ffmpeg + ' -nostdin -i {in} {out} -y';
+		options.ogg = options.ffmpeg + ' -nostdin -i {in} {ffmpeg_ogg_options} {out} -y';
 	}
 
 	if (!options.mp3 && options.ffmpeg) {

tsconfig.json

@@ -1,6 +1,6 @@
 {
 	"compilerOptions": {
-		"target": "es2017",
+		"target": "es2019",
 		"module": "commonjs",
 		"sourceMap": true,
 		"outDir": "out",