# RapDuo AI: Pricing, Video Tips, and a Complete Website Builder Prompt Explore RapDuo AI pricing, photo and prompt tips, plus a complete LLM prompt for building a simple AI rap video website with clear UI and SEO. Canonical URL: https://aiidelist.com/blog/rapduo-ai Language: en Published: 2026-10-24 Updated: 2026-10-24 ## Key Takeaways - **RapDuo AI turns photos into short rap performances**, combining animated faces with music and vocals. Several websites use the RapDuo name, so check the exact domain before comparing features or buying credits. - **Free access usually means a limited preview.** For example, rapduo.app advertises a five-second preview after Google sign-in, without a payment card. - **Compare the complete purchase:** duration, resolution, generation tier, download access, credit expiration, and whether billing renews. - **A technically successful render can still disappoint.** Rapduo.video excludes successfully generated videos with unsatisfactory faces or lyrics from its standard refund coverage. - **For builders, the strongest starting point is a simple workflow:** upload photos, select a style, and generate. The copy-and-paste LLM prompt below specifies the interface, SEO, payment clarity, and implementation requirements. ## What Is RapDuo AI? RapDuo AI is a name used by photo-to-rap video services that place two subjects into a generated musical performance. The basic appeal is straightforward: upload photos, choose a setting, describe an occasion, and receive a short video without filming a performance yourself. For example, rapduo.video supports two separate portraits or one photograph containing both participants. Its interface combines stage selection, a topic field, and generation settings. The page also acknowledges that exact lyrics and lip-sync are not guaranteed. The distinction between **appearance and voice** matters. A photograph supplies visual information; it does not contain a recording of someone's voice. A generated character that resembles a person should not be assumed to sound like that person. Likewise, a topic field is not necessarily an exact script editor. Asking for a birthday rap can guide the subject without guaranteeing every requested word appears. ## Which RapDuo Website Are You Looking For? Several domains currently present RapDuo-branded generators. Their published offers differ, and matching names alone do not establish shared ownership, shared accounts, or interchangeable credits. | Website | Distinguishing published details | | --- | --- | | rapduo.video | Offers a photo-based rap generator with eight stage choices, including an orange booth, rooftop, and pet stage. | | rapduo.app | Advertises nine stages, including separate Original and Booth options. | | rapduoai.com | Advertises four stage settings and one-time packs calculated around 15-second videos at 768P. | These are descriptions from each website, rather than an independent ranking of output quality. **Use the full domain when checking a tutorial, purchase receipt, or support policy.** A guide describing one service's free credits may be irrelevant to another service with nearly identical branding. ## Why RapDuo AI Is Connected to the Hotel Lobby Trend The recognizable orange backdrop and shared microphone come from Quavo and Takeoff's 2022 performance of Hotel Lobby for A COLORS SHOW. Reporting published by XXL on September 23, 2026 documented AI versions featuring different people, characters, and animals in that performance format. The report did not establish a definitive first creator of the trend. Two different creative goals now sit under similar search terms: - **Recreating the recognizable trend:** retaining the familiar performance style and potentially the existing song. - **Making a personalized rap:** using an original topic, generated vocals, and a new musical performance. The difference can exist inside a single product. Rapduo.app describes its Original stage as using the Hotel Lobby song and movements, while its Booth stage uses a newly generated rap in the orange setting. Check the selected mode instead of assuming that every stage handles audio identically. For a birthday or anniversary, an original line about the participants may be more relevant than reproducing the trend exactly. Choose the intended result before choosing the template. ## RapDuo AI Pricing: Compare the Exact Domain and Output The following are **published USD offers checked on October 24, 2026**. They are not like-for-like quality benchmarks: durations, resolution labels, and generation tiers differ. | Service and offer | Listed price | Published allowance | Nominal cost per included video | | --- | --- | --- | --- | | rapduo.video Single video | $9.99 once | One 12-second Lite video at 720p | $9.99 | | rapduo.video Small pack | $29 once | Five 12-second Lite videos at 720p | $5.80 | | rapduo.app Starter monthly | $9.99 per month | One Standard 15-second video at 720p | $9.99 | | rapduo.app Starter yearly | $89.99 per year | 30 Standard videos across the annual allowance | About $3.00 | | rapduoai.com One video | $4.90 once | One 15-second video at 768P | $4.90 | | rapduoai.com Three videos | $9.90 once | Three 15-second videos at 768P | $3.30 | The allowances come from the respective rapduo.video pricing page, rapduo.app pricing page, and rapduoai.com pricing page. Per-video figures assume the included allowance is fully used. Three details deserve attention: - **Expiration differs.** Rapduo.video lists 180-day validity for purchased packs; rapduoai.com says its pack credits do not expire. - **A quality label may not mean more pixels.** Rapduo.app lists Standard at 60 credits and HD at 150 credits, while its main page describes both as 720p. That is 2.5 times the credit cost, not evidence of 2.5 times the quality. - **An annual equivalent is not a monthly purchase.** A price displayed as approximately $7.50 per month can require the full $89.99 annual payment. A more useful personal metric is: ```text Effective cost per usable video = total amount spent / videos worth keeping ``` For a hypothetical $30 purchase, keeping only two outputs makes the effective cost $15 per usable video. This calculation captures the cost of creative retries, which a headline price does not. ## Is RapDuo AI Free? **Some services offer a trial, but the conditions are domain-specific.** Rapduo.app advertises a five-second preview after Google sign-in, with no card required. This is a short trial rather than unlimited full-length generation. Rapduo.video's current terms say an eligible Google account may receive trial credits once, subject to person, device, network, and regional restrictions. Its generator displays a five-second, 480p trial configuration costing three credits. Eligibility should be checked in the account rather than assumed from an older search snippet. Before starting, verify: - Whether the free allowance covers a complete render. - Whether the result can be downloaded. - Whether a watermark applies. - Whether a paid generation uses the same quality tier as the preview. - Whether upgrading creates a new performance or preserves the existing take. A preview is most useful for deciding whether the concept works with the chosen photos. It should not be treated as a promise that every later render will match it. ## How to Make a Better RapDuo AI Video **1. Choose portraits that are easy to interpret.** Use sharp images with visible eyes and mouths, even lighting, and a frontal or gentle three-quarter angle. Avoid heavy face filters, sunglasses, motion blur, and hands covering the mouth. These recommendations align with RapDuo's photo preparation guidance. A useful selection test is to compare two candidate images at small size. Prefer the one in which the face remains easiest to recognize. An elaborate background adds little if the facial detail is weak. **2. Give the clip one purpose.** Choose a birthday message, a friendly roast, an anniversary, or a shared achievement. Include one memorable detail rather than compressing a biography into a few seconds. For example, a birthday prompt about a friend's pizza obsession provides a concrete lyrical idea. A request for something epic, cinematic, funny, emotional, and viral gives competing directions without much personal material. **3. Select the output shape before generation.** Plan the composition around the destination: a vertical frame for a full-screen phone presentation or a landscape frame for a wider two-person scene. Rapduo.app says its standard output is landscape 16:9, with vertical 9:16 available through Custom settings. Do not assume the default is vertical because the examples resemble a social-media trend. Cropping a landscape duet afterward can remove one performer. Regenerating in the intended shape may be preferable when both faces are essential. **4. Evaluate a short draft.** Check whether both participants are recognizable, the topic is audible, and the exchange makes sense. If the concept fails at this stage, a higher-resolution export alone will not fix it. **5. Change one variable per retry.** Keep a simple record of the photos, prompt, stage, and settings. Replace a weak portrait or simplify the topic before changing everything simultaneously. Otherwise, it becomes difficult to identify which adjustment helped. **6. Review the whole clip with sound.** Inspect the beginning, the transition between performers, and the ending. A strong thumbnail does not establish that faces, hands, and vocal timing remain consistent throughout the video. ## RapDuo AI Prompt Examples You Can Adapt These original examples are each under 120 characters, making them suitable for short topic fields. They describe the intended content; exact wording and delivery remain generation-dependent. **Birthday rap** ```text Sam and Alex celebrate Sam turning 30. Pizza, late arrivals, loyal friends. Playful, clean birthday rap. ``` **Anniversary duet** ```text Mia and Leo mark five years together. Bad cooking, great road trips. Warm, funny, clean anniversary rap. ``` **Team celebration** ```text Two coworkers celebrate shipping their app. Coffee, bug fixes, teamwork. Upbeat, clean victory rap. ``` **Pet rap battle** ```text Two cats argue over the sunny window. One steals treats, one rules the sofa. Funny, clean rap battle. ``` For a tool with a separate, longer visual-direction field, try: ```text Two adult friends stand on opposite sides of a fixed microphone. The left performer delivers the opening line; the right performer answers. Keep both faces visible, with small gestures and a steady camera. Finish with both facing the camera. ``` Do not paste detailed camera instructions into a field intended only for the rap's topic. Put scene directions in the appropriate controls when they exist. For names with unusual pronunciation, test a short phonetic spelling if the tool lacks pronunciation controls. Avoid inserting several unfamiliar names into the same brief verse. ## Troubleshooting: Faces, Lip-Sync, Lyrics, and Failed Renders Treat the following as an inspection and retry checklist, rather than guaranteed fixes. | Problem | What to check | Next experiment | | --- | --- | --- | | A face becomes difficult to recognize | Input sharpness, facial obstruction, and the moment the change begins | Replace that portrait while keeping the other settings fixed | | Both performers appear to deliver one line | Whether the active speaker is visually clear | Request simpler alternating lines where supported | | Hands intersect the microphone | Whether the scene requires complicated object handling | Use a stationary microphone and fewer gestures | | Names or details are missing | Whether the prompt contains too much information | Retain one name and one essential detail | | The second person disappears after cropping | Original aspect ratio and framing | Generate in the intended output shape | | A finished video feels disappointing | Whether it completed successfully or actually failed | Check the refund policy before spending credits again | The emphasis on stable positions and clear speaker transitions is consistent with Dreamina's rap-duo production guidance, which recommends specifying performers, verse handoffs, and restrained movement. **A failed render and an unwanted render are different billing events.** Rapduo.video says technical failures and safety-blocked renders return credits automatically. Its policy generally excludes successful outputs that disappoint subjectively, and its first-purchase refund provision requires unused credits and a request within seven days. If a job remains pending, check its status before submitting another. Save the job identifier and any error message so a support request describes the specific generation. ## Privacy, Consent, and Publishing Your Video Photo-upload policies deserve the same attention as sample videos. According to rapduo.video's privacy policy, video source uploads are deleted within 24 hours after a job finishes or fails, while generated videos and previews are normally retained for 30 days. The policy says uploads and generated videos are not used for AI training, but necessary inputs are shared with third-party generation providers. These are the provider's stated practices, not an independent security audit. Download any result worth keeping instead of treating a generation history as permanent storage. Its terms also require adult participants who have consented and prohibit uploading photos of anyone under 18. Other RapDuo-branded services may have different rules; a family-themed example does not establish permission to upload a child's image to every service. **Generated audio is not a universal guarantee against copyright claims.** Rapduo.video's terms expressly decline to guarantee copyright protection or freedom from third-party claims. For commercial work, check the applicable output terms and permissions for the photos, people, and any added music. Publishing rules are a separate consideration. requires disclosure for realistic synthetic content, including making a person appear to do something they did not do, and identifies AI-generated music as content requiring disclosure. A realistic photo-to-rap performance should be assessed against those requirements during upload. ## RapDuo AI or a More Flexible Video Workflow? The appropriate choice depends on how much control the final video needs. | Goal | Workflow to consider | Main tradeoff | | --- | --- | --- | | A quick personalized greeting | A photo-to-rap generator | Convenient setup, but limited control over the exact take | | Specific staging and verse transitions | A configurable video-generation workflow | More direction and revision work | | Exact recorded lyrics and vocal delivery | Record or obtain authorized audio first, then build visuals around it | More editing, but the performance is established before animation | | A longer music video | Assemble multiple planned shots in an editor | Requires continuity and audio synchronization across clips | Dreamina's published workflow, for example, separates planning the performers and generating visuals from adding authorized music and completing lip-sync in editing. That offers a different production approach from a short personalized generator. Neither workflow guarantees a polished result. A useful purchasing test is whether the tool gives control over the specific problem that matters: recognizable faces, exact words, a particular song, or consistent timing. ![AI rap video website LLM Prompt](https://cdn.aiidelist.com/api/image/Peqlg_yxMKj22nhS10Z0Q.webp) ## Build a RapDuo-Style Website: A Complete LLM Prompt An accessible AI rap video website should let visitors understand the result before asking them to learn a new interface. Its core interaction can be reduced to **upload two photos, choose a style, and generate a video**. Model names, technical parameters, and production infrastructure belong behind that experience. The following prompt defines an original product inspired by this workflow. The features are proposed requirements, not claims about existing RapDuo services. Replace the brand and domain placeholders before using it with a coding-capable LLM. For search visibility, the specification emphasizes useful public content, crawlable links, and accurate metadata. These align with Google Search Essentials, which also makes clear that following best practices does not guarantee indexing or rankings. ```text Act as a senior product designer, full-stack engineer, and technical SEO specialist. Build a working, beginner-friendly AI rap video website. The product turns two portrait photos into a short video of two people performing an original rap together. Create an original brand experience inspired by the photo-to-duo workflow. Do not copy another website's logo, proprietary assets, exact page design, testimonials, or product claims. PROJECT VARIABLES - Brand: [BRAND_NAME] - Production domain: [SITE_URL] - Primary language: English - Target users: ordinary people making birthday videos, friendship clips, anniversary messages, and playful social posts. - If the brand is missing, use 'Rap Studio' as a development placeholder. - If the production domain is missing, continue locally and require a real domain before production SEO configuration is considered complete. - Reuse the existing project stack. For a new project, use a maintainable TypeScript stack that supports server-rendered or statically rendered public pages and interactive components. 1. PRODUCT PRINCIPLE A first-time visitor must understand three things immediately: - What they can make. - Which photos they need. - What to click next. The main workflow must fit on one creation page: 1) Add two photos. 2) Pick a style. 3) Create the video. A personal topic is optional. Do not require users to write prompts, choose AI models, or understand credits before they can explore the product. Do not create a video editor, timeline, node interface, complex dashboard, or long onboarding questionnaire for the first release. 2. VISUAL DESIGN SYSTEM Create a warm, polished music-studio identity. Use these starting design tokens: - Page background: #FFF9F2 - Card surface: #FFFFFF - Primary action: #C2410C - Primary action hover: #9A3412 - Main text: #1C1917 - Secondary text: #57534E - Borders: #E7DED3 - Decorative highlight: #FED7AA - Success: #166534 - Error: #B91C1C Use a readable system sans-serif or a locally hosted font. Body text should normally be at least 16px. Use a clear type hierarchy, an 8px spacing system, approximately 20px card corners, and approximately 12px button corners. Keep the main content within a maximum width of about 1200px. Use generous whitespace and restrained shadows. Reserve orange emphasis for primary actions and selected states. Avoid blue technology gradients, glass panels, decorative robots, excessive badges, animated backgrounds, and a wall of feature cards. Use original, authorized sample media. Label AI-generated examples accurately. If sample video assets are unavailable, show an honest empty state or clearly identified illustrative poster. Do not invent playable videos or imply that stock imagery is actual output. 3. HOMEPAGE AND NAVIGATION Keep the header simple: - Brand - Examples - How it works - Pricing - Sign in or My videos Use one clear H1 on the homepage: 'Turn two photos into a rap video' Suggested supporting copy: 'Choose your photos, pick a style, and make a personal rap together.' Do not claim the product is free, instant, unlimited, copyright-safe, or guaranteed to go viral unless the configured service genuinely supports that statement. Desktop layout: - Place the creation form beside a sample/result panel. - Show the upload controls immediately beneath the headline. - Keep the example player's sound off until the user chooses to play it. Mobile layout: - Use a single column. - Keep the headline concise and the photo inputs near the top. - Put large examples and explanatory content below the creation controls. - Do not place a full-screen hero, carousel, or signup wall before the upload area. Below the generator, show: - Up to three real examples with descriptive captions. - A short three-step explanation. - A concise pricing explanation. - Useful FAQs about photos, waiting, downloads, retries, and deletion. - Footer links to policies and support. Do not add fake customer counts, ratings, awards, countdowns, or reviews. 4. PHOTO UPLOAD EXPERIENCE Show two adjacent upload cards labeled 'You' and 'Your partner'. On narrow screens, keep them side by side if the controls remain comfortably usable. Support click-to-upload, mobile photo-library selection, and drag-and-drop where available. Camera capture may be offered as an additional option; do not force it. For the MVP, accept JPEG, PNG, and WebP up to 10 MB per image, subject to stricter provider limits. Validate the real file content and decoded dimensions server-side, not only the extension. Show a preview immediately after local selection. Provide clearly labeled Change and Remove actions. Handle image orientation correctly and avoid stretching portraits. Use short helper text: 'One adult per photo. Keep the face clear and well lit.' If an unsupported format is selected, explain the fix in plain language. Do not pretend to support HEIC unless conversion is implemented and tested. Do not claim a face has been detected unless a real detection step exists. For the first release, prioritize two separate portraits. Add a combined-photo option only if the chosen generation workflow supports it reliably. 5. SIMPLE STYLE AND TOPIC CONTROLS Show four visual style cards: - Orange Studio: an orange set and a shared microphone. - Birthday: a cheerful personal celebration. - Couple: a warm anniversary or relationship theme. - Funny Friends: a playful, friendly rap exchange. Select Orange Studio by default. Each card needs a name, an accessible selected state, and one short description. Do not make users choose a separate stage, mood, camera, and musical genre. Include an optional field labeled: 'What should the rap be about?' Use a maximum of 120 characters with a visible counter. Example placeholder: 'Alex turning 30, pizza nights, and always being late' Provide a few topic suggestions that fill this field without submitting the job. Leaving the field blank should use an appropriate template default. Put additional controls inside a collapsed 'More options' section: - Rap language, limited to supported languages. - Video shape: vertical, square, or landscape where supported. - Duration and quality, limited to provider-supported combinations. Prefer 15 seconds, 720p, and vertical 9:16 as product defaults only if the selected provider supports them. Otherwise choose a supported default and show the actual setting. Never silently substitute duration, format, or quality after purchase. Keep model identifiers, seeds, inference settings, and technical parameter names out of the normal user interface. 6. GENERATE BUTTON, SIGN-IN, AND PRICE CLARITY Use one dominant primary button: 'Create my rap video' Before generation, show a plain-language summary of the selected output, its cost, and what is included. Obtain the quote from trusted server-side configuration. If the product uses credits, show the generation cost and the user's balance. Also make the required cash purchase understandable. Do not force visitors to calculate exchange rates between credits and video seconds. Show whether payment is one-time or recurring before checkout. Display the full annual charge when offering annual billing. Allow visitors to explore examples and prepare their inputs before signing in. If authentication is required, ask when they start generation and preserve the draft through the sign-in flow. Do not store portraits indefinitely in localStorage. Add one clear consent checkbox before submission: 'I have permission to use both photos, and everyone shown is 18 or older.' If a real free trial is configured, explain its exact duration, quality, watermark, and download limits. Otherwise do not display a free-trial claim. Show missing-input guidance next to the relevant control. If generation is disabled, explain why. Avoid unexplained disabled buttons. On mobile, a sticky action bar is acceptable only if it respects safe areas, does not cover form controls, and behaves correctly when the keyboard opens. 7. REAL GENERATION STATES Implement an explicit job lifecycle: - Draft - Uploading - Queued - Generating - Ready - Failed Use plain-language status messages such as: - 'Uploading your photos' - 'Your video is waiting to start' - 'Making your rap video' - 'Your video is ready' Only show a percentage or completion estimate when it comes from meaningful progress data. Do not invent a countdown or animate a fake progress bar to 99%. After submission, persist the job on the server so it can be recovered after refresh. Poll with sensible backoff or use server events where the stack supports them. Stop polling after a final state. Do not tell users they can safely leave the page until job recovery actually works. For failures, explain what happened and the next action. Preserve reusable inputs. Show whether the charge was released or credits were returned, based on actual transaction state. Never start a second paid job automatically because a request timed out. Reconcile the original job before allowing a retry. 8. RESULT EXPERIENCE When a real job succeeds, replace the sample panel with the user's actual video. Show: - A video player with native playback controls and sound controls. - A prominent 'Download video' action. - A secondary 'Make another' action. - A clearly labeled 'Try another take' action with its new cost shown before submission. - A Delete action and the real storage-expiration date if applicable. Display the actual duration, format, resolution, and watermark status. Offer MP4 download when a real MP4 is available; do not rename another format to .mp4. Keep videos private by default. Do not automatically publish user results in the examples gallery. If sharing is implemented, explain who can view a shared link. Make public sharing explicit, reversible, and separate from download. Do not label a publicly accessible link as private. 9. IMPLEMENTATION BOUNDARIES Build a real interactive application, not just a landing-page mockup. Keep generation behind a provider adapter with operations for: - Supported capabilities. - Cost quotation. - Job submission. - Job status. - Output retrieval. Use server-side credentials and documented provider APIs. Never invent endpoints, model identifiers, or unsupported capabilities. Do not expose secrets in browser code. If provider credentials are unavailable, complete the interface and adapter structure with a clearly labeled development demo. Disable real checkout in demo mode. Any fixture video must be labeled as a sample and must not be presented as generated from the user's photos. Use durable job records, authenticated ownership checks, private asset storage, and short-lived authorized download links. Validate inputs and apply rate limits. Make job submission and payment handling idempotent. Repeated clicks, webhook retries, or browser refreshes must not create duplicate charges or duplicate paid jobs. Use server-verified payment events rather than trusting a checkout success redirect. Keep a transaction record for reservations, charges, and refunds or credit releases. Describe retention and deletion only as implemented. Do not promise that a provider avoids training on uploads unless its applicable terms establish that. 10. SEO AND SITE STRUCTURE Render important public content in HTML that is available without signing in. Avoid a marketing page that is only an empty client-side application shell. Create these routes: - / : the main generator and product explanation. - /pricing : real plans, allowances, renewal terms, and failure policy. - /examples : authorized examples with useful captions. - /how-to-make-ai-rap-video : a practical original tutorial. - /privacy : actual data practices. - /terms : actual service conditions. - /refunds : actual purchase and failure rules. - /my-videos : authenticated private history, excluded from indexing. If required business or policy details are missing, mark drafts as incomplete for the owner and keep unfinished pages out of the production index. Do not publish invented company details or placeholder policies as finished documentation. For every indexable page: - Write a unique, descriptive title and meta description. - Use one descriptive H1 and logical H2/H3 sections. - Set a self-referencing absolute canonical URL using the configured production domain. - Add appropriate Open Graph and social-sharing metadata. - Use descriptive links and accurate image alt text. - Include the URL in the sitemap only when the page is public, canonical, indexable, and complete. Suggested homepage title: 'AI Rap Video Generator from Photos | [BRAND_NAME]' Suggested homepage description: 'Turn two photos into a personal AI rap video. Choose a style, add an optional topic, and create a clip with music and vocals.' Use phrases such as 'AI rap video generator', 'rap video from photos', and 'AI rap duo' naturally when they describe the page. Do not use keyword-density targets or repeat a keyword in every heading. Do not present the new site as an official RapDuo service. A competitor-comparison page may be added later only with accurate, dated, independently written comparisons. Do not generate hundreds of nearly identical keyword pages. Add birthday, anniversary, or other use-case pages only when they contain distinct examples, practical guidance, and a matching working flow. Use correct status codes for missing pages. Keep filters, temporary job URLs, checkout pages, and private results out of the sitemap. Protect private content with authentication and authorization. Search exclusion is additional protection, not access control. For publicly reachable pages excluded with noindex, do not also block crawling in a way that prevents search engines from seeing that directive. 11. STRUCTURED DATA AND VIDEO SEO Add only structured data that matches visible, truthful content. Use WebSite and, where applicable, Organization metadata with real configured details. Add BreadcrumbList where visible breadcrumbs exist. Consider SoftwareApplication or WebApplication metadata only when the application and its properties are accurately represented. Never fabricate ratings, reviews, prices, or offers to satisfy rich-result requirements. Do not promise rich results. Use Article metadata for the original tutorial with accurate authorship and dates. Keep useful FAQ content visible to readers. Do not promise FAQ rich results or automatically add obsolete markup recipes. Add VideoObject only to real, authorized public example videos with accurate metadata and working media and thumbnail URLs. Do not add it to illustrative posters, inaccessible private results, or empty video placeholders. If dedicated example watch pages are created, make the video the main content, with a stable public thumbnail, useful context, and an accessible player. Ensure the player exists in rendered HTML without requiring a visitor to click before it appears. 12. ACCESSIBILITY AND PERFORMANCE Design for keyboard, touch, and screen-reader use. Use visible labels, logical focus order, visible focus indicators, accessible dialogs, and status announcements for generation updates. Do not rely on color alone for errors or selected styles. Aim for touch controls at least 44 by 44 CSS pixels as a usability target. Verify text contrast and support reduced-motion preferences. Optimize images, reserve media dimensions, avoid layout shifts, and keep unnecessary JavaScript out of public pages. Do not autoplay multiple videos or download the whole example gallery on first load. Treat these Core Web Vitals values as performance goals: - LCP at or below 2.5 seconds. - INP at or below 200 milliseconds. - CLS at or below 0.1. Use real-user measurements at the 75th percentile when available. Local audits are development evidence, not proof that production users meet these targets. 13. VALIDATION AND DELIVERY Implement the website rather than stopping at a plan. Make reasonable reversible decisions and document assumptions. Ask only when a missing answer blocks a real integration or material product decision. Verify the complete flow at mobile and desktop widths, including 375px and 1440px: - Upload, preview, replace, and remove photos. - Invalid file handling. - Default style and optional topic. - Draft preservation through authentication. - Cost visibility and insufficient-balance handling. - Job creation, refresh recovery, failure, retry, and download. - Duplicate-submission prevention and payment reconciliation. - Authorization for private jobs and media. - Keyboard navigation and readable error states. - Public HTML, metadata, canonical URLs, sitemap, and structured data. Run the project's relevant build, type, and behavioral checks. Report what was actually tested; do not invent scores or successful integrations. Deliver: 1) The implemented project and a clear file structure. 2) A short README with setup, development, and deployment instructions. 3) An environment-variable example containing placeholders only. 4) Central configuration for branding, capabilities, prices, limits, and retention. 5) The provider adapter and a clearly distinguished demo mode if needed. 6) A concise list of what works, what was validated, and any credentials or business details still required. The final product should feel easy enough for someone who has never used an AI video tool. Keep the complexity in the implementation, while making the interface clear, honest, and pleasant. ``` The larger control sizes in this prompt are a usability target, not a claim that WCAG's minimum requirement is 44 pixels. W3C's Level AA target-size guidance specifies 24 CSS pixels with defined exceptions and explains why larger controls can help users. The SEO requirements also separate **public examples from private customer videos**. Google recommends discoverable video players and stable thumbnails for video indexing, while its structured-data guidance requires markup to describe the page's actual content. Private customer uploads should not be exposed to meet those requirements. For publicly accessible pages using `noindex`, Google must be able to crawl the directive. Authentication remains the appropriate access boundary for private content. The performance targets above follow the published Core Web Vitals thresholds and should be assessed with field data when available. ## How to Judge the Website an LLM Builds A polished screenshot is only one part of the result. The useful test is whether an unfamiliar visitor can complete the real task without explanation. | Area | Acceptance question | | --- | --- | | First impression | Is it immediately clear that two photos become a rap video? | | Upload | Can a visitor add, replace, and remove photos without learning special controls? | | Choices | Is there a sensible default, with optional settings kept out of the way? | | Pricing | Is the actual charge or required purchase visible before commitment? | | Waiting | Does the interface distinguish a queued job, active generation, and failure? | | Results | Can the user play and download the actual output? | | Honesty | Are samples, demonstrations, and real generated results clearly distinguished? | | Privacy | Can another account access someone else's job or download URL? | | SEO | Does the public page contain useful HTML, accurate metadata, and working links? | | Mobile | Does the complete flow work without horizontal scrolling or obscured controls? | Start with one dependable generation configuration before adding more templates, models, or subscription tiers. Every additional choice should solve a recognizable user need. ## Frequently Asked Questions **Can the two photos come from different places?** Yes. Separate portraits are an advertised input option. For the first attempt, prioritize comparable facial clarity over matching backgrounds. **How long does generation take?** Rapduo.app advertises approximately three to six minutes. Treat that as a provider estimate rather than a guaranteed turnaround time. **Will a higher-resolution version fix a wrong face or incorrect lyric?** Do not assume so. More pixels, a different generation tier, and a new performance are separate changes. Check what the upgrade actually does before paying. **Is RapDuo AI suitable for a complete song?** The video offers compared above focus on short clips. If the requirement is a complete song, verify song duration and audio-generation features separately; a 15-second video allowance does not describe a full-track music product. **Can an LLM build this type of website from one prompt?** The prompt can guide implementation of the interface, application logic, integration boundaries, and public content. A working commercial service still needs a real generation provider, valid credentials, configured payments where applicable, and tested operational behavior. A simulated result is not a completed generation integration. **Should the website expose every AI setting?** For a beginner-focused product, start with a supported default and a small number of meaningful choices. Add advanced controls only when they help users achieve a result they can describe, such as changing the video shape or language. ## Conclusion RapDuo AI offers a straightforward way to turn familiar faces and a personal idea into a short musical video. The most useful comparison starts with the exact website, the output settings, and the complete purchase terms. For creators, **begin with two clear, consented adult portraits, one concise topic, and the smallest suitable trial or purchase**. Review the faces, words, and timing before committing to a larger pack. For builders, use the LLM prompt above to implement a focused first version: **simple photo uploads, a few understandable styles, transparent costs, and a dependable result screen**. Validate the complete workflow before expanding the feature list or publishing additional SEO pages.