TikTok re-encodes every video you upload, but the quality of that re-encode depends heavily on your source file. Uploading a well-encoded H.264 MP4 at 1080p gives TikTok's compression algorithm the best input to work with, resulting in a sharper, cleaner video in your feed. Poor source files — heavily compressed, low bitrate, or wrong codec — produce blurry and blocky TikTok videos that get buried by the algorithm.
Prepare a TikTok-ready H.264 MP4 at 1080p — pre-configured for maximum quality on the platform.
TikTok accepts MP4 and MOV. The recommended format is MP4 with H.264 video and AAC audio at 1080p. TikTok prefers vertical (9:16) video at 1080×1920, though it accepts other aspect ratios too.
TikTok compresses all uploaded videos. If your source file has a low bitrate or is already heavily compressed, the final TikTok video will look blurry. Upload a high-bitrate H.264 MP4 at 1080p for the sharpest results.
TikTok's native resolution is 1080×1920 (9:16 vertical, 1080p). Use this for full-screen display on mobile. Landscape (16:9) and square (1:1) videos are also accepted but will appear with letterboxing or cropping.
From the mobile app: 287.6 MB. From the desktop web uploader: 500 MB. If your raw video exceeds this, compressing it with this tool will reduce file size while preserving quality.
TikTok officially recommends H.264 for uploads. While H.265 files may upload successfully, using H.264 ensures the widest compatibility and the most predictable encoding outcome from TikTok's processing pipeline.
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