TikTok Web Signal
Best supported default. It adds a normal-speed edit list plus local/iTunes metadata. It does not change playback speed, so the file should preview normally on a computer.
TikTok local patcher
TikTok upload signals, patched privately.
Drop a video, keep the default method, and download a patched copy. Everything runs in this browser, and the frames are left untouched.
Drop video files here
or drag in MP4, MOV, or M4V videos.
Built for TikTok Web uploads. Use MP4 or MOV, vertical 1080 x 1920 when possible, and avoid in-upload edits, cropping, music, or mobile reposting because those steps can re-encode the video.
1 Drop a video
2 Keep Web Signal
3 Process locally
4 Upload on TikTok Web
Method
Start with the safest recipe.
Best-supported Upload120 method: TikTok Web Signal. Use Balanced Sync only when you want a stronger timing patch. Classic Force is kept for older public timing workflows.
Multiplier
FPS multiplier.
Queue
Files.
No files yet. Drop a video above.
How it works
TikTok methods, ranked by evidence.
Upload120 keeps only three local MP4 recipes with a defensible TikTok-specific purpose. No researched method can guarantee final TikTok FPS, so the app defaults to the least invasive patch first.
Balanced Sync
Strong fallback. It changes movie and video track timing, then adds an edit-list guard and local metadata. Use it when Web Signal is not enough.
Classic Force
Legacy fallback. It follows the public timing-patch idea by changing movie and video track timing. Use only when you need compatibility with older workflows.
Settings
Output preferences
About
Local-only TikTok companion for Upload120.
The current project is the TikTok-focused browser website. Desktop archives were removed so the public repo only points at the maintained local web tool.
Sources
Upload120’s method choices are based on TikTok developer docs, MP4 container behavior, and public method research. The full list is on the Sources page.