✳ ANSWER · DIRECT
Why does my TikTok video have no sound?
Common causes: AAC audio codec missing (TikTok requires AAC; MP3 fails), muted upload, or platform-side music-detection false positive. Validate the file with /tools/validate - if audio codec is not AAC, re-export from your editor with AAC.
Detail
TikTok requires AAC audio. MP3 or unsupported audio codecs often result in silent videos on TikTok. Re-export with AAC audio and re-validate. If audio still fails, check whether the platform flagged your audio as suspected copyrighted music.
Validate your file against the target platform before you ship.
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