In your torrent client (like qBittorrent or uTorrent), right-click the file and select "Force Re-check." This will scan your file for missing or corrupted "pieces" and re-download only the "improper" ones.
VLC has a built-in feature to repair broken or missing indexes in video files, which can often bypass minor "bad piece" errors. In your torrent client (like qBittorrent or uTorrent),
Large files are broken into smaller "pieces" for sharing. A "proper piece" is one that matches its original digital fingerprint (hash). In your torrent client (like qBittorrent or uTorrent),