test: add parameter options to usage of type ExecFileFn

src/converters/ffmpeg.ts

@@ -735,6 +735,7 @@ export async function convert(
     execFile(
       "ffmpeg",
       [...ffmpegArgs, "-i", filePath, ...extraArgs, targetPath],
+      options,
       (error, stdout, stderr) => {
         if (error) {
           reject(`error: ${error}`);