Function waitForStableFile

src/utils/video.ts:35–64

(
  filePath: string,
  options: { pollMs?: number; attempts?: number } = {},
)

let videoValidatorExecutablePathPromise: Promise<string> | undefined;

export async function waitForStableFile(
  filePath: string,
  options: { pollMs?: number; attempts?: number } = {},
): Promise<void> {
  const pollMs = options.pollMs ?? 150;
  const attempts = options.attempts ?? 12;
  let previousSize: number | undefined;
  let stableCount = 0;

  for (let attempt = 0; attempt < attempts; attempt += 1) {
    let currentSize = 0;
    try {
      currentSize = fs.statSync(filePath).size;
    } catch {
      currentSize = 0;
    }

    if (currentSize > 0 && currentSize === previousSize) {
      stableCount += 1;
      if (stableCount >= 2) {
        return;
      }
    } else {
      stableCount = 0;
    }

    previousSize = currentSize;
    await sleep(pollMs);
  }
}

export async function isPlayableVideo(filePath: string): Promise<boolean> {
  try {