: If the audio doesn't match the video, players like VLC allow you to adjust this live by pressing the keys during playback. 3. Missing Codecs

If you used torrents, force a "re-check" in your client to download missing packets. If it was a direct download, you may need to download it again from a stable source.

: Sites hosting these files frequently use aggressive "clickjacking" ads that can install unwanted software. Poor Quality