Free video creator tools

Practical answers for the work around a video: file sizes, subtitle formats, speaking habits and the real shape of a metered plan. No account, upload or sales form between you and the answer.

Every tool runs entirely in your browser - nothing is uploaded, nothing is stored, and nothing you type leaves the page.

• Video file size calculator

  Estimate the size of a finished video from its duration and average video and audio bitrates.

• SRT to VTT subtitle converter

  Convert captions between SRT and WebVTT, preview the cues and download the result without uploading the file.

• Descript cost calculator

  Put in the hours you record, how much AI you use and the quality you export at, and see which Descript plan covers it and what that plan costs at annual and monthly billing.

• Filler word counter

  Paste a transcript and see every um, uh and you know marked in place, with per-word counts and a rough idea of how long they take to say.

Why these tools

Rooster is a Mac video editor with the record, transcribe, edit and export loop as its reference workflow. It is in closed beta and not on sale. These tools answer questions creators ask around an edit: how large will the file be, what will this month cost, where is the hesitation, and will the captions work where they are going. You can get each answer without us seeing your bill, transcript or file.