Fix the footage,
keep the run.
H4 Tools makes small, free, in-browser utilities for people who record games. The first one is LagCut: it strips pause menus and lag-frozen frames out of BTD6 recordings so late rounds play back at one clean speed.
Built for one job each.
LagCut for BTD6
Scan a laggy Bloons TD 6 recording, remove pause menus and repeated frames, and export a video-only MP4 at one consistent game speed. Files stay in your browser.
How LagCut works → Available now · PrototypeLagCut for They Are Billions
Same idea, different game: strip the frozen frames out of 800% final-wave recordings. Its own frame model watches the map, not the HUD or your webcam.
Open the tool → Demo · Word gameWordillion
A word roguelike. Answer trivia prompts with rare words of up to five letters, take a boon after every answer, name the hidden Wordle. Daily run, endless mode and a 60-second time trial.
How it works →Why footage lags, and what to do about it.
Plain explanations of what's going on in your game and your recorder, with fixes that don't require a new PC.
Why BTD6 lags in late rounds (and what actually helps)
BTD6 late-game lag is a simulation problem, not a graphics problem. What causes it from round 100 onward, which fixes help, and how to rescue the footage you already recorded.
Read the guide →Recording · OBSWhy your gameplay recording has duplicate frames (with 0 dropped frames)
OBS says 0 dropped frames but the recording stutters. Here's what's really in the file: repeated frames written every time the game stalled, and how to find and remove them.
Read the guide →Editing · YouTubeHow to speed up laggy BTD6 footage without it looking jerky
Fast-forwarding a laggy BTD6 recording in an editor keeps the stutter. The clean way: remove repeated frames first, then set one consistent game speed. Steps for both approaches.
Read the guide →Editing · CleanupHow to cut pause menus out of a gameplay recording
Every pause-menu visit in a long recording is a cut you'd otherwise make by hand. How to find them quickly in an editor, and how to detect and remove them automatically for BTD6.
Read the guide →