How to make marketing videos with AI on a small budget

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Making marketing videos with AI lets a small business produce social clips, product explainers and translated ads without a studio, actors or an editor on staff. The tools have improved quickly, but they still work best for short, simple videos and need a clear plan. This guide covers which kinds of AI video tools exist, a workflow that keeps quality up, what it really costs in credits, and the legal and brand points to watch.

What AI video tools can do today

"AI video" covers several quite different tools, and picking the right type matters more than picking the right brand:

• Text-to-video and image-to-video generators such as Runway, Pika and Luma Dream Machine create short clips from a written description or a still image. They are good for atmospheric b-roll, product shots in imagined settings and eye-catching openers.
• Avatar video tools such as Synthesia and HeyGen produce a realistic presenter reading your script, useful for explainers, training and sales videos.
• AI dubbing and voice tools such as ElevenLabs and Rask AI translate and re-voice existing videos, often keeping the speaker's voice.
• AI editing features in ordinary video editors that cut silences, add captions, reframe for vertical formats and clean up audio.

Most marketing videos combine two or three of these: a script written with an assistant, a few generated shots, a voice-over and automatic captions.

Where AI video works well, and where it does not

AI video is strong for short social clips of 5 to 30 seconds, product teasers, explainer videos with a presenter, translated versions of existing videos, and quick variations of an ad for testing. It saves the most money where you would otherwise film many versions.

It is weaker at long continuous scenes, consistent characters across many shots, accurate hands and text, complex physical action and anything that must show your real product exactly. For a product demo, a screen recording or real footage is still more honest and usually more convincing. Use AI for the parts around the demo: the hook, the background, the narration and the translations.

The main tools and what they cost

Video generators sell monthly plans that include a number of credits; each second of rendered video uses credits, and higher resolutions or better models use more. That makes the real cost depend on how much you render, including failed attempts.

Prices from vendor websites, checked 2026-10-12; they update automatically.

Current entry prices: Runway Free plan, then USD 15 per month, Pika Free plan, then USD 10 per month, Luma Dream Machine From USD 30 per month. Compare plans in the AI video generator ranking, and if cost is the main concern, start with the cheapest AI video generators. Head-to-heads: Runway vs Pika and Runway vs Luma Dream Machine.

Step 1: start with the goal and the script

Every good marketing video starts with one goal and one audience. Write them down: "Get small accounting firms in Nigeria to book a demo" is a goal; "make a cool video" is not. Then write a script short enough to hold attention: around 75 to 90 words for a 30-second video, with the key message in the first three seconds.

An AI assistant is useful here. Give it the goal, audience, product facts and length, and ask for three script options with different hooks. Pick the best and edit it yourself. Our guide to AI writing tools for marketing covers how to keep scripts accurate and on-brand.

Step 2: storyboard the shots

Break the script into shots of three to six seconds each and decide for each one whether it will be generated, filmed, a screen recording, a still image or text on screen. A simple table works: shot number, what the viewer sees, what they hear, and the source. This step prevents the most common waste in AI video: generating dozens of clips with no plan and discovering none of them fit together.

Write a short visual style description (lighting, colours, camera movement, mood) and reuse it in every prompt so the shots match.

Step 3: generate and select clips

Generate each shot several times with small prompt variations and keep the best. Expect to discard more than you keep. To save credits, draft at the lowest resolution or fastest mode, then render only the chosen shots at full quality. Image-to-video is often easier to control than text-to-video: create or choose a strong still image first, then animate it.

Check each clip frame by frame for problems AI still makes: distorted hands, flickering objects, garbled text and faces that change between frames. Anything that looks wrong for a split second will be noticed by viewers who replay a short clip.

Step 4: voice, music and captions

A clear voice-over usually matters more than perfect visuals. You can record one yourself, use a professional voice actor, or generate one with an AI voice tool. If you generate a voice, use one the tool's licence allows for commercial use and never clone a real person's voice without their written permission.

Add captions: most social video is watched without sound. Use licensed music from a library whose terms cover advertising. Many editors add captions automatically, but check spelling, especially of your brand and product names.

Step 5: edit, brand and export

Assemble the clips in a video editor, add your real logo, fonts and colours, and end with a clear call to action. Export the formats each channel needs: vertical 9:16 for Reels, Shorts and TikTok, square or 4:5 for feeds, and 16:9 for YouTube and websites. Keep the file sizes reasonable for web pages; a heavy video on a landing page slows it down.

Track results with tagged links so you know which video drove sign-ups. Our UTM builder and guide to UTM links explain how.

Avatar presenters: explainers and training

Avatar tools generate a presenter speaking your script in front of a background, in many languages. They are popular for onboarding, training, product updates and personalised sales videos, because changing the script is easier than reshooting. Viewers usually recognise avatars, so they suit informational content better than emotional brand stories.

Compare the leading tools in HeyGen vs Synthesia, and see current prices on Synthesia pricing and HeyGen pricing. Many plans limit the minutes of video per month, so estimate your volume first.

Translating videos into other languages

If you sell in several countries, AI dubbing can turn one video into many. The tool transcribes the original, translates it, generates a voice in the new language (often matching the original speaker's voice) and in some cases adjusts lip movement. For marketing, have a native speaker review every translation: idioms, product terms and legal claims are where machine translation slips.

Our AI dubbing ranking compares the main tools, the video dubbing cost calculator estimates monthly cost from the minutes you need, and our guide on how to dub videos with AI covers the workflow in detail.

Budgeting: what a month of AI video really costs

A realistic budget includes more than the subscription. Count the credits for every attempt, not just the final clips; it is common to generate three to five versions of each shot. Add stock music, any voice tool, your editing software and your own time. For a small business publishing a few short videos a week, a single mid-tier plan of one generator plus an editor with automatic captions is often enough. Start with one month on a monthly plan, track how many credits each finished second really used, then decide whether a yearly plan makes sense.

Legal and brand points to watch

• Commercial licence. Confirm your plan allows commercial use; some free plans do not, and some add watermarks.
• People and voices. Do not generate real people's faces or voices without written consent; never imply an endorsement.
• Brands and characters. Avoid other companies' logos, products and famous characters in prompts and output.
• Claims. Videos that show results your product cannot achieve are misleading advertising, whether filmed or generated.
• Labelling. Some ad platforms require disclosure of realistic synthetic media. Check before you publish.

The same principles as for images apply; see can you use AI-generated images commercially.

Common mistakes

• Generating before planning, then trying to build a story from random clips.
• Letting the visuals carry the message instead of a clear script and voice-over.
• Rendering everything at maximum quality and running out of credits mid-month.
• Showing an imagined product instead of the real one, which disappoints customers.
• Ignoring captions, so the video means nothing when watched on mute.
• Posting one version only, instead of testing two or three hooks.

Video formats and sizes for each channel

One script can feed several channels, but each channel wants a different shape. Plan the crop before you generate, because re-framing a finished clip often cuts off faces, products or captions.

• Vertical 9:16 for short-form feeds such as Reels, TikTok and Shorts. Keep text and faces in the middle two thirds of the frame, because buttons and captions cover the edges.
• Square 1:1 or 4:5 for feed ads on most social platforms. These take more screen space than landscape on a phone.
• Landscape 16:9 for YouTube, websites, webinars and presentations.

Most generators let you choose the aspect ratio before rendering. Generating separately for each ratio costs more credits but usually looks better than cropping one master. A cheaper middle path is to generate the landscape shots for the website and the vertical shots for social, and reuse only the voice-over and captions across both.

Keep a simple export checklist: correct ratio, captions burned in for silent autoplay, a logo end card, and a file name that shows the channel and version. When you post, add a tracked link built with the UTM builder so you can see which version brought visitors.

Testing and measuring your AI videos

The real advantage of AI video is that variations are cheap. Instead of one polished ad, you can make four versions with different hooks and let the results decide. Change one thing at a time: the first three seconds, the voice, the headline or the call to action. If you change everything at once you will not know what made the difference.

Track a few numbers for each version: how many people watched past three seconds, the average watch time, clicks, and what those clicks did on your site. Platform dashboards give the viewing numbers; tagged links and your site analytics show the rest. A video with a high view count and no sign-ups is entertainment, not marketing.

Once you have a winner, put your effort there: a cleaner version, more languages through an AI dubbing tool, and a cut for each format. Retire the losing versions quickly so they stop using budget. Keep a short log of what worked, because patterns appear after a few rounds and make the next script easier to write.

Questions