Stop losing hours on slow video production. Unlock instant short-form content backed by neuroscience or run high-performing ads to scale your revenue.
Watch viral TikToks for hours trying to figure out why they work.
Listen closely and write down the script word-for-word.
Write out detailed instructions for every single scene.
Manually align clips, zoom markers, and subtitles in editing tools.
Paste the URL of any viral TikTok you want to copy.
Mostly instantly transcribes, segments scene pacing, and structures prompts.
Get a finished, high-virality video ready to post, styled with your own product.
Making a brand new video style from scratch is a guessing game. It is very hard to know if people will like it or scroll past. The odds are against you.
Mostly's Video Analysis Pipeline lets you copy videos that are already viral. Just paste any successful TikTok link. Mostly automatically reads the script, scans the timing of every cut, analyses shot by shot, understands why it goes viral, and recreates the exact same viral format using your own product.
Dopamine is a chemical in the brain that makes people feel excited about what is coming next. It triggers curiosity.
Mostly builds curiosity loops and unexpected visuals into the very first two seconds, using unanswered questions and pattern breaks. This triggers curiosity before viewers can choose to scroll away.
An unanswered question or strange visual that makes the viewer go, 'Wait, what is about to happen?'
An unexpected zoom, screen flash, or camera shift that grabs immediate focus.
A transition into fast cuts and pacing that keeps the viewer watching.
Attention spans on mobile feeds have crashed to just 47 seconds. People scroll so fast because their brains get bored quickly.
Mostly uses super fast editing cuts, text bounces, and zoom shifts to reset the viewer's attention clock every few seconds. This keeps them focused. Plus, we add sharing triggers that make people want to send the video to their friends.
If you show the exact same video to people on TikTok or Instagram too many times, they get bored. They stop clicking, and your ads get very expensive (your CPA goes up!).
Mostly makes 20+ different versions of your video in minutes. This keeps your ads fresh, grabs more attention, and keeps your ROAS (return on ad spend) super high.
Getting real creators to make videos for your product (UGC) is super slow and costs a ton of money. You have to wait weeks for them to ship products, record footage, and edit files.
Mostly turns your Shopify store link into high-quality, realistic video commercials instantly. You get beautiful digital actors selling your products without waiting, contracts, or high creator fees.
Most people scroll past social media ads in less than two seconds! If your video starts slow, you lose them forever.
Mostly makes super exciting video intros (called "hooks") with flashy captions, quick cuts, and satisfying sound effects. This catches their attention instantly so they watch longer and buy your product.
Active Hook: "3 reasons standard headphones are trash"
Standard ad agencies take a huge chunk of your marketing budget just to record and edit videos. That means you have less money left to actually show your ads to potential buyers.
With Mostly, you make endless, professional videos for practically nothing. This allows you to put 100% of your advertising budget straight into showing your ads to customers. You lower your CPA and boost your ROAS instantly.
Other platforms make you manually generate, edit, and stitch individual 4-second scenes yourself. Mostly automates the entire pipeline: we auto-stitch your scenes, generate animated captions, and add custom CTAs in a single click.
Scale your marketing from quick social hooks to detailed, long-form product testimonials and multi-scene ads without strict duration caps.
Promote entire collections or run comparative ads. Seamlessly tag and mention multiple store products within a single generated video prompt.
Build true narrative continuity. The same digital actor maintains identical facial structure and expressions across every generated scene.
Deliver fully synthesized audio speech that sounds real. Pair your characters with custom voices that retain consistent tone, accent, and pitch across lines.
See how e-commerce brands, DTC marketers, and UGC creators are achieving massive scale with Mostly.
“We used to pay $150 per UGC video and wait a week. With Mostly, we spun up 20 hook variations for our skincare product in 10 minutes. ROAS shot up from 1.8 to 3.4 in the first week.”
“Ad fatigue is our biggest enemy. Mostly lets us generate fresh visual hooks and different voiceover styles daily. Our Cost Per Acquisition (CPA) on Meta is down 40%.”
“The product-to-video workflow is pure gold. We just paste our client's Shopify URL, select the UGC aesthetic, and Mostly auto-generates 5 high-converting ad concepts with perfect transitions.”
“The AI UGC avatars actually look natural and use authentic TikTok pacing. No more robotic gestures or awkward pauses. Highly recommend for scaling Shopify stores.”
“Being able to localize our top-performing US product ads into German, French, and Japanese in one click is insane. International CPA is now matching domestic.”
“Mostly's B-roll generation is incredible. It somehow knows exactly when to zoom in on product details, and the background music beat-drops perfectly on the hooks.”
“We used to pay $150 per UGC video and wait a week. With Mostly, we spun up 20 hook variations for our skincare product in 10 minutes. ROAS shot up from 1.8 to 3.4 in the first week.”
“Ad fatigue is our biggest enemy. Mostly lets us generate fresh visual hooks and different voiceover styles daily. Our Cost Per Acquisition (CPA) on Meta is down 40%.”
“The product-to-video workflow is pure gold. We just paste our client's Shopify URL, select the UGC aesthetic, and Mostly auto-generates 5 high-converting ad concepts with perfect transitions.”
“The AI UGC avatars actually look natural and use authentic TikTok pacing. No more robotic gestures or awkward pauses. Highly recommend for scaling Shopify stores.”
“Being able to localize our top-performing US product ads into German, French, and Japanese in one click is insane. International CPA is now matching domestic.”
“Mostly's B-roll generation is incredible. It somehow knows exactly when to zoom in on product details, and the background music beat-drops perfectly on the hooks.”
“We used to pay $150 per UGC video and wait a week. With Mostly, we spun up 20 hook variations for our skincare product in 10 minutes. ROAS shot up from 1.8 to 3.4 in the first week.”
“Ad fatigue is our biggest enemy. Mostly lets us generate fresh visual hooks and different voiceover styles daily. Our Cost Per Acquisition (CPA) on Meta is down 40%.”
“The product-to-video workflow is pure gold. We just paste our client's Shopify URL, select the UGC aesthetic, and Mostly auto-generates 5 high-converting ad concepts with perfect transitions.”
“The AI UGC avatars actually look natural and use authentic TikTok pacing. No more robotic gestures or awkward pauses. Highly recommend for scaling Shopify stores.”
“Being able to localize our top-performing US product ads into German, French, and Japanese in one click is insane. International CPA is now matching domestic.”
“Mostly's B-roll generation is incredible. It somehow knows exactly when to zoom in on product details, and the background music beat-drops perfectly on the hooks.”
“We used to pay $150 per UGC video and wait a week. With Mostly, we spun up 20 hook variations for our skincare product in 10 minutes. ROAS shot up from 1.8 to 3.4 in the first week.”
“Ad fatigue is our biggest enemy. Mostly lets us generate fresh visual hooks and different voiceover styles daily. Our Cost Per Acquisition (CPA) on Meta is down 40%.”
“The product-to-video workflow is pure gold. We just paste our client's Shopify URL, select the UGC aesthetic, and Mostly auto-generates 5 high-converting ad concepts with perfect transitions.”
“The AI UGC avatars actually look natural and use authentic TikTok pacing. No more robotic gestures or awkward pauses. Highly recommend for scaling Shopify stores.”
“Being able to localize our top-performing US product ads into German, French, and Japanese in one click is insane. International CPA is now matching domestic.”
“Mostly's B-roll generation is incredible. It somehow knows exactly when to zoom in on product details, and the background music beat-drops perfectly on the hooks.”
“We use Mostly to rapid-prototype UGC ads before sending them to creators—but honestly, the AI-generated outputs convert so well we ended up using them directly.”
“We generated 30 unique retargeting video ads for our app in under an hour. The dynamic caption styles look exactly like they were custom edited in Premiere.”
“The Hook Generator is a cheat code. It gives you 5 different visual and text hook options based on current TikTok trends. CTR went from 1.2% to 4.1%.”
“Creating TikTok Spark Ads has never been this simple. We feed in our customer reviews, and Mostly outputs high-energy, high-converting UGC testimonial videos.”
“Translating and voicing product ads for different Asian markets used to cost a fortune in voice talent. Mostly's regional voice tones sound 100% native.”
“The cinematic product filter makes cheap phone footage look like a premium studio shoot. It's completely transformed our Instagram Shop ads.”
“We use Mostly to rapid-prototype UGC ads before sending them to creators—but honestly, the AI-generated outputs convert so well we ended up using them directly.”
“We generated 30 unique retargeting video ads for our app in under an hour. The dynamic caption styles look exactly like they were custom edited in Premiere.”
“The Hook Generator is a cheat code. It gives you 5 different visual and text hook options based on current TikTok trends. CTR went from 1.2% to 4.1%.”
“Creating TikTok Spark Ads has never been this simple. We feed in our customer reviews, and Mostly outputs high-energy, high-converting UGC testimonial videos.”
“Translating and voicing product ads for different Asian markets used to cost a fortune in voice talent. Mostly's regional voice tones sound 100% native.”
“The cinematic product filter makes cheap phone footage look like a premium studio shoot. It's completely transformed our Instagram Shop ads.”
“We use Mostly to rapid-prototype UGC ads before sending them to creators—but honestly, the AI-generated outputs convert so well we ended up using them directly.”
“We generated 30 unique retargeting video ads for our app in under an hour. The dynamic caption styles look exactly like they were custom edited in Premiere.”
“The Hook Generator is a cheat code. It gives you 5 different visual and text hook options based on current TikTok trends. CTR went from 1.2% to 4.1%.”
“Creating TikTok Spark Ads has never been this simple. We feed in our customer reviews, and Mostly outputs high-energy, high-converting UGC testimonial videos.”
“Translating and voicing product ads for different Asian markets used to cost a fortune in voice talent. Mostly's regional voice tones sound 100% native.”
“The cinematic product filter makes cheap phone footage look like a premium studio shoot. It's completely transformed our Instagram Shop ads.”
“We use Mostly to rapid-prototype UGC ads before sending them to creators—but honestly, the AI-generated outputs convert so well we ended up using them directly.”
“We generated 30 unique retargeting video ads for our app in under an hour. The dynamic caption styles look exactly like they were custom edited in Premiere.”
“The Hook Generator is a cheat code. It gives you 5 different visual and text hook options based on current TikTok trends. CTR went from 1.2% to 4.1%.”
“Creating TikTok Spark Ads has never been this simple. We feed in our customer reviews, and Mostly outputs high-energy, high-converting UGC testimonial videos.”
“Translating and voicing product ads for different Asian markets used to cost a fortune in voice talent. Mostly's regional voice tones sound 100% native.”
“The cinematic product filter makes cheap phone footage look like a premium studio shoot. It's completely transformed our Instagram Shop ads.”
Choose the plan that's right for your creative journey. All plans include access to our core AI video engine.
Drag to scale credits, video output, storage, and team seats
Everything you need to know about our plans, credits, and how we help you build better videos.
