Does TikTok support MKV files?
MKV is not listed for TikTok Content Posting API uploads.
An MKV recording may contain several audio or subtitle tracks. The API lists MP4, MOV and WebM instead; choose the intended tracks when exporting to MP4. This page does not claim to have tested MKV in every TikTok app version.
Convert MKV to MP4 →Source: TikTok Media Transfer Guide. Content Posting API; native app/web acceptance may differ. Checked 2026-09-12.
Frequently asked
Does TikTok support MKV?
MKV is not listed for TikTok Content Posting API uploads. An MKV recording may contain several audio or subtitle tracks. The API lists MP4, MOV and WebM instead; choose the intended tracks when exporting to MP4. This page does not claim to have tested MKV in every TikTok app version.
What format should I convert MKV to for TikTok?
MP4 - a widely supported video container; acceptance also depends on the video and audio codecs inside it. Converting MKV to MP4 runs entirely in your browser with the converter linked below.
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