Function uniqueOutputPath

server.js:127–136

(filename)

}

function uniqueOutputPath(filename) {
  const parsed = path.parse(filename);
  let candidate = path.join(OUTPUTS, filename);
  let index = 2;
  while (fs.existsSync(candidate)) {
    candidate = path.join(OUTPUTS, `${parsed.name}-${index}${parsed.ext}`);
    index += 1;
  }
  return candidate;
}

function toneFilter(tone, frames, fps, scope = "join") {
  if (!tone || frames <= 0) return "";