FrameCover

Small detail. Big difference.

Your video.
Your best frame.

A black screen or a random title card on the cover? Pick a frame that tells your video's story and make it the thumbnail.

Download the app How it works

Windows · macOS · Linux
Works locally — no video uploads to the cloud.

From a random cover to a deliberate choice
FrameCover window: selecting a frame on the timeline and previewing the new thumbnail
Find the right moment. The rest is one click.

See the difference

Recognize your videos at a glance

Replace an unhelpful thumbnail with a moment you choose.

Before A random thumbnail
Video in the file manager before changing its thumbnail
After The frame you chose
The same video in the file manager with its new thumbnail

Cover display depends on the video format, file manager and its cache.

Everything you need. Nothing you don't.

One tool. The right cover.

Precise frame selection

Scrub the timeline and preview your chosen frame before applying a new thumbnail.

Popular formats

Open MP4, MOV, MKV, WebM, AVI and FLV files. How the thumbnail is saved depends on the container.

Convert to MP4

For other containers, the app offers to create a separate MP4. Your original file stays untouched.

Local processing

Your video is processed on your computer. No server uploads or account required.

Safe saving

Changes are written to a temporary file before replacing the original, so a failed write won't leave your source video corrupted.

Three platforms

The same straightforward workflow on Windows, macOS and Linux. Ready-to-use builds are published on GitHub.

Not every container supports embedded cover art. FLV and WebM use an XDG cache thumbnail where supported; results vary across operating systems and players.

Three simple steps

From file to fresh thumbnail

  1. Open a video

    Choose a file on your computer.

  2. Find your moment

    Move the slider to the frame you want and check the preview.

  3. Apply the cover

    Click Save thumbnail to embed your chosen frame as the cover.

Start with a great frame

Download FrameCover

The latest stable release, straight from GitHub. Choose your platform.

Links point to the latest stable release. See the release notes for requirements and build details.

All releases and changelog ↗