Video too large for TikTok? How to check and fix it
TikTok's Content Posting API has a 4 GB upload cap; native composer limits can differ. If size is the stated error, export a smaller copy in a local editor. Our browser compressor only accepts inputs up to 100 MB.
Check these first
- Exact file size vs. 4 GB (API) - the app or web composer you use may cap lower
Likely causes
- File is over the size limit
Compare the exact file size with the limit for your account and upload surface: 4 GB via the Content Posting API; native surfaces may be tighter. A failed upload alone does not identify its cause.
Fix it
- Compress it
Try a smaller output preset on a copy, then check the generated size and quality. Re-encoding can lose detail and does not guarantee a smaller file or platform acceptance. This tool accepts files up to 100 MB. For a larger source, export a smaller copy in your local editor first.
Compress a video
Check your file
Extension and MIME type are labels, not proof of the container. Dimensions and duration come from this browser's media reader. This does not detect codecs, bitrate, corruption or platform upload compatibility. Files and measurements are not sent anywhere.
Platform reference and evidence
These reference values have partial source coverage. Ratios and dimensions are editing guidance; account and upload-surface limits can differ. Approximate or unknown values do not certify eligibility.
- Platform
- TikTok
- Editing ratio
- 9:16
- Max length
- up to 10 minutes via the Content Posting API; account limits vary
- Max file size
- 4 GB via the Content Posting API
Duration and size: reference and limitations. Approximate values still need confirmation in your composer.
The API allows uploads up to 10 minutes, but the account-specific publishing limit may be shorter. Native app and web limits can differ.
Format reference scope: Content Posting API; native app/web acceptance may differ. Source checked 2026-09-12; this does not verify every reference field. TikTok Media Transfer Guide
Prepare a copy in Koldflux, review its output and check the current destination requirements before publishing.
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