Add Logo to Video Locally and Export a Branded MP4

To add logo to video reliably, begin with a prepared image and a clear decision about hierarchy. This page accepts one base video plus one PNG, JPG, or WebP image. The image is scaled relative to the video frame, placed in one fixed corner, and kept visible for the whole export. The browser runs FFmpeg locally and produces a H.264 MP4. It is a focused branding step, not a timeline editor: there are no animated keyframes, tracked objects, multiple layers, or automatic safe-area detection. That limited scope makes the result predictable when you need the same simple mark on a short, manageable clip.

1. 1

   Prepare the base clip and logo image

   Choose the video that will supply the final frame and, when enabled, the output audio. Then select a logo image. A transparent PNG is usually the clearest choice because it preserves soft edges and leaves the video visible around the artwork. JPG and WebP also work when the design intentionally has a solid background. Before processing, inspect the image at a small size. Fine taglines, hairline borders, and low-contrast artwork may disappear on a phone even if they look good on a large monitor.

2. 2

   Choose placement, scale, margin, and opacity

   Pick the corner with the least important content. A logo in the bottom-right can interfere with captions, player controls, or a call to action; a top corner can hide browser chrome, a presenter, or a title. Logo width is a percentage of the base frame, so the mark stays proportionate on different source resolutions. Margin creates breathing room from the edge. Opacity changes the visual weight, but it does not make the logo more private or prevent it from covering content. Use the smallest readable setting that identifies the material without competing with it.

3. 3

   Export the MP4 and inspect real viewing conditions

   Keep the browser tab open while the local conversion runs. Once the MP4 is ready, review the beginning, a busy middle section, and the end. Check that the logo is sharp, not clipped, and clear against both light and dark footage. Listen for the expected base audio. Then test the file at the size and player where it will be published. A placement that looks polite in an editing preview can block subtitles or become unreadable in a social feed, embedded lesson, or mobile message.

A visible mark can establish ownership, distinguish an approved export from a draft, and help a short clip remain recognizable after it is downloaded or reposted. But a logo is part of the composition, not a stamp applied outside the design. Its position competes with text, faces, UI controls, captions, product details, and platform overlays. A strong transparent asset, an intentional corner, and a measured size normally communicate more clearly than a very large opaque watermark. The most effective branded video lets the viewer understand the content first and recognize the source without having to search for it.

This tool makes one repeatable version of that decision. FFmpeg uses the base video as the reference frame, so the logo width is relative rather than an arbitrary pixel number. It composites the image continuously across the output and can retain only the base audio as AAC. The output is re-encoded as H.264 MP4, which is broadly useful for review and publishing workflows. The page intentionally does not claim to protect a video from copying or remove the need for rights management. A fixed visual mark can identify an export; it cannot stop cropping, obscuring, re-editing, or unauthorized reuse.

Corner, logo width, edge margin, and opacity work together. Start with a 12% to 18% width and enough margin that the artwork does not feel attached to the frame edge. Transparent artwork should usually remain at full opacity; lower opacity is more appropriate for a subtle review watermark than a required brand identifier. CRF controls H.264 quality after the overlay is burned into the image. Lower CRF values preserve more detail and produce larger files, while higher values reduce size at the risk of softening text and fine edges. The encoding preset trades speed for compression efficiency. The audio switch keeps only the base clip audio, because the logo file has no useful audio stream.

Review every place the logo could conflict with real content. Confirm it avoids captions, legal notices, platform controls, faces, product controls, cursor activity, and important on-screen text. Check it against bright scenes, dark scenes, and any footage that changes quickly. Ensure the source image itself is current and approved; an outdated partner logo or an old event date can be harder to notice once it is burned into a long sequence. Finally, check the downloaded file in the actual distribution player, because a platform may add its own interface or crop the visible frame.

• Use a transparent PNG with adequate empty padding around the artwork. Tight artwork can look crowded even when its numerical margin is correct.
• Start around 12% to 18% of the base video width and a 32-pixel margin. Watch at the actual publishing size before making the mark larger.
• Keep opacity at 100% for an essential brand mark; reduce it only when the logo should be present but visually secondary to the content.

The normal workflow stores the selected video and image in the browser-side FFmpeg environment, composites them locally, and returns a downloadable MP4. It does not require a sign-in or a hosted editing project. That is useful when the source includes internal product screens, client material, classroom footage, personal recordings, or unreleased work that should not first be sent to a generic upload service.

Local processing is not a redaction tool. Everything visible in the base clip can still be visible in the final output, including names, faces, customer data, browser tabs, addresses, notifications, and confidential screens. A logo may even make a file feel more official than it is. Remove or blur sensitive material before branding, verify that you have permission to use the logo, and examine the final export in the same context where it will be shared.

Use a full editor when a mark needs to move, fade, appear only at a timecode, follow an object, use a mask, react to the background, or coexist with lower-thirds and several graphic layers. Those tasks need a timeline, keyframes, tracking, and design-aware previewing. Browser-local FFmpeg is also best for manageable source files rather than multi-hour or very high-resolution media. Test a representative short clip when quality, memory, or the image format is uncertain. For a single fixed-corner brand image on a short video, this focused workflow is faster and easier to audit.

• You need animated branding, several logos, a changing position, a tracked mark, a lower-third, clickable elements, or a timed in-and-out transition.
• The image contains private information, the source needs redaction, or a platform requires a precisely specified safe area that you have not tested.