How to Make a Facebook Cover Video with AI (2026 Guide)

Your AI-generated video will fail if it doesn't meet Facebook's technical requirements. Before you start creating, you must use the correct specifications to avoid cropping and quality loss.

As of Q1 2026, the official guidelines state a Facebook cover video must be between 20 and 90 seconds long. For optimal display on both desktop and mobile, the recommended video dimensions are 820 x 462 pixels.

While the desktop display area is a wider 820 x 312 pixels, uploading at 462px height prevents black bars on mobile devices. Keep the file size under 1.75 GB and use the MP4 format with H.264 encoding for the best compatibility.

A common mistake is uploading a standard 16:9 video, which results in awkward cropping. Sticking to these precise numbers ensures your video looks professional.

Also, remember that audio is off by default, so your video should be understandable without sound, relying on clear visuals and text overlays. We recommend aiming for a 30-second loop for maximum impact.

A good cover video tells a micro-story that loops smoothly.

Instead of just showing random clips, use an AI text generator to create a concise narrative.

Tools like ChatGPT-4o or Jasper AI are effective for this.

The goal is a script that is 3-5 short sentences, totaling less than 75 words, which can be narrated in about 30 seconds.

For example, a SaaS company could use a prompt like: "Write a 4-sentence script for a 30-second looping Facebook cover video.

The theme is 'improving team productivity.' The first sentence should grab attention, the middle two should show a problem and our solution, and the last sentence should be a call to action that loops back to the beginning." In our testing with ChatGPT-4o, this prompt produced a script that was ready to use in under 60 seconds.

This scripting step ensures your video has a clear purpose before you generate any visuals, saving significant time compared to trying to build a story from pre-existing clips.

With your script ready, you can now generate the visual components. This is where text-to-video AI models excel.

You don't need to film anything. For short, atmospheric shots, Pika 1.0 is a solid choice, producing high-quality 3-5 second clips from simple prompts.

For more complex scenes with specific character actions, Luma AI's Dream Machine (as of its early 2026 version) provides more detailed motion. For our productivity script, we generated three clips: one using Pika for "an office with messy sticky notes," and two with Dream Machine for "a team looking frustrated in a meeting" and "the same team smiling and collaborating on a clean interface." Each clip took approximately 2-3 minutes to render.

The key is to keep prompts specific and consistent in style. For example, adding "cinematic, soft lighting, 4K" to each prompt helps maintain a uniform aesthetic across clips generated by different models.

Once you have your 3-5 video clips, you need to assemble them into a single file. Desktop editors like CapCut or Clipchamp are good free options for this.

You arrange the clips on a timeline, trim them to match the script's pacing, and add simple transitions. For an integrated process, a tool like FluxNote can stitch the clips, generate a realistic AI voiceover using an integrated model like ElevenLabs v3, and automatically create captions.

Adding burned-in captions is critical because, as mentioned, Facebook videos autoplay on mute. This entire assembly and audio-dubbing process typically takes less than 15 minutes for a 30-second video.

Ensure you export the final file using the 820x462 pixel dimensions discussed earlier. This step transforms your separate AI-generated assets into a polished, ready-to-upload cover video.

Uploading your video correctly is the final step. Go to your Facebook Page, click "Edit" on your cover area, and select "Upload photo/video." After selecting your 820x462px MP4 file, Facebook will process it.

A frequent error is forgetting to select a thumbnail; if you don't, Facebook will pick a random frame that might be blurry or awkward. Choose a frame that is clear and represents the video's theme.

Another critical setting is to ensure the "Loop Video" option is toggled on. This makes the video play continuously for visitors.

After uploading, check your page on both a desktop computer and a mobile device. Pay close attention to the mobile view, as this is where most users will see it.

Confirm that no important text or logos are cut off by the profile picture or other interface elements. If everything looks good, your new AI-generated cover video is live.