Nobuf

Screen Recorder & Product Demo Maker

Local browser recording

Record screen, camera and audio into a styled local demo without uploading media.

00:00

Duration

1280 × 720

Resolution

30

Frame rate

0 B

Output size

Capture source & quality

The browser—not this page—controls the screen, window or tab picker and asks again for every recording.

Devices & demo styling

How to use it

  1. 01

    Check and configure capture

    Review actual browser capabilities, choose screen or camera mode, devices, quality, frame rate, audio and demo styling.

  2. 02

    Record with explicit permission

    Use the browser source picker, then pause, resume, annotate and monitor duration, output size and returned audio tracks.

  3. 03

    Review and download

    Play the local recording, choose trim marks where supported, save the original, a cover frame and a privacy-safe metadata report.

Frequently asked questions

Is my recording uploaded?

No. Capture, canvas composition, MediaRecorder output and downloads remain in this browser tab.

Why can system audio be missing?

The browser, operating system and chosen surface control whether an audio track is returned. A request cannot guarantee capture.

Why is MP4 not always available?

The output list comes from MediaRecorder.isTypeSupported. WebM is common; MP4 appears only when the current browser encoder reports support.

Can every browser export a trimmed clip?

No. Local trim export requires media-element stream capture and real-time re-recording. The control is disabled with an explanation when unavailable.

Keep working with other focused browser utilities.

All tools

Local by default; remote data sources are clearly disclosed.

© 2026 Nobuf

Nobuf

Fast, local-first utilities powered by your browser.