VOE provider returns HLS streams (.m3u8) which previously used yt-dlp's native HLS downloader. That downloader does not report downloaded_bytes/ total_bytes in progress hooks, causing only 0% and 100% to ever show on the queue page. Explicitly set 'downloader: ffmpeg' so progress updates with actual byte counts are broadcast, enabling intermediate percentages (25%, 50%, 75%, etc.) to display correctly.