| Issue | Symptoms | Typical Cause | |-------|----------|---------------| | Corrupted or incomplete files | File won't open, plays only partway, or causes errors | Interrupted download, incomplete file transfer | | Codec incompatibility | Video plays without sound, or file not recognized | Missing or damaged codec packs | | Audio-video desync | Sound and picture don't match; dialogue lag | Inconsistent timestamp or encoding issues | | Playback stuttering | Choppy video, freezing, buffering | Outdated player, insufficient hardware acceleration | | Index corruption | Can't seek/scrub progress bar; wrong duration displayed | Recording or download interrupted abruptly | | No audio playback | Video plays perfectly but without any sound | Damaged codec or missing audio decoder |
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