Free video creator tools

Practical help for the work around a video: reading a script to camera, file sizes, subtitle formats 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, and nothing you type or choose leaves this device.

• Free online teleprompter

  Paste a script, see how long it takes to read, and scroll it past a marker at your speaking pace, with mirroring and full screen.

• Speech time calculator

  Paste a script or type a word count and see how long it takes to say at your pace, with the words that fill each length from one minute to thirty.

• Free MOV to MP4 converter

  Turn a QuickTime or screen recording into an MP4 in your browser. H.264 and HEVC are copied without re-encoding, so the quality is unchanged.

• Free WebM to MP4 converter

  Re-encode a browser screen recording or other WebM to H.264 and AAC on your own device, so it plays in QuickTime and almost everywhere else.

• Free MOV to MP3 converter

  Save the sound of a MOV or MP4 as an MP3, re-encoded on your own device, for a podcast host, a phone or a site that asks for one.

• Extract audio from video

  Take the sound out of an MP4, MOV, WebM or MKV as a small MP3 or an uncompressed WAV for editing, without uploading the video.

• 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.

• 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.

Why these tools

Rooster is a Mac video editor with the record, transcribe, edit and export loop as its reference workflow, and you can try Rooster free. These tools answer questions creators ask around a recording: how long will this script take to read, how large will the file be, what will this month cost, and will the captions work where they are going. You can get each answer without us seeing your script, bill or file.