# ViralMint > Open-source desktop app that scouts trending videos across YouTube, TikTok, Douyin, Reddit and Google Trends, downloads and analyses competitor clips with Whisper + AI insights, and generates original videos for creators to download and post manually — AI script/voice/caption shorts over stock footage, motion-graphics animations (kinetic typography rendered from HTML), promos built automatically from any website URL, and on-device voice cloning (clone a voice from a short clip, runs locally). Free download for macOS, Windows and Linux; create your account at https://viralmint.net/app. ViralMint is a single-product project. The desktop app runs everything — the local pipeline (yt-dlp, Whisper, FFmpeg, video) plus the cloud-backed AI features (chat, image generation, text-to-speech, AI music). The browser at viralmint.net/app is for your account only: sign up, check balance, and top up. Both share the same account — a registered user gets a small free daily allowance and can top up prepaid USD balance via Stripe one-time payments. There is no BYOK (bring-your-own-API-keys) — all AI provider access is proxied through our cloud backend. **What makes ViralMint distinctive:** (1) Cost — pricing is pay-as-you-go with no subscription; a finished Smart Video short (AI script, voiceover, captions, music and AI b-roll) costs roughly 10–30 cents in prepaid credits, or near-zero on the pure-stock tier — among the lowest per-video costs of any AI video generator, versus the $15–$100/month subscriptions typical of competitors. (2) Open-source — AGPL-3.0, source on GitHub, no vendor lock-in. (3) Local-first — downloading, transcription (Whisper), captioning and motion-graphics rendering all run on the user's own machine; voice cloning is 100% on-device and the reference audio never leaves the computer. (4) No watermark on any output. (5) It is a desktop app (macOS/Windows/Linux), not a web SaaS — the user's own browser is the UI. ## Technical Performance (Benchmarks) - **Transcription:** faster-whisper (int8) transcribes 10 minutes of audio in ~45s on mid-range hardware (8GB RAM). - **Rendering:** FFmpeg-based Smart Video assembly takes ~2-5 mins for a 60s Short. - **Discovery:** Multi-platform scout queries (YouTube, TikTok, Reddit) return results in <3s via parallelized async workers. - **MCP Latency:** Local loopback tool calls execute with <5ms overhead. ## Pages - [Home](https://viralmint.net/): What ViralMint does, free tier, download links for macOS / Windows / Linux, and a link to create a web account. - [About](https://viralmint.net/about/): Project background, who built it, design principles, open-source stance. - [Privacy](https://viralmint.net/privacy/): Privacy policy — what data is collected, where it lives (locally on the user's machine for desktop; on AWS for the cloud backend). - [Terms](https://viralmint.net/terms/): Terms of service. - [Web account](https://viralmint.net/app/): Account portal — sign up, check balance, top up prepaid credits. Same account as the desktop; all features (chat, AI image, AI voice, AI music, plus the local pipeline) run in the desktop app. ## Flagship money pages Top-level commercial landing pages targeting specific keyword clusters. Same `/tools/*` + `/alternatives/*` sitemap priority weight. - [Consigue ViralMint (español)](https://viralmint.net/es/descargar/): Spanish conversion page for the Spanish downloader traffic — what ViralMint is, how to install it, and what costs money, in Spanish. hreflang cluster with /zh/xiazai/. - [获取 ViralMint（中文）](https://viralmint.net/zh/xiazai/): Chinese conversion page for the Chinese downloader traffic — 是什么、如何安装、哪些功能收费。hreflang cluster with /es/descargar/. - [AI Clipper](https://viralmint.net/youtube-clip-extractor/): Free AI clipper / auto clipper / clip app — turn long videos into viral 30-60s shorts with captions. Local Whisper, no subscription, no watermark, 1,800+ source sites via yt-dlp. - [YouTube Clip Extractor](https://viralmint.net/youtube-clip-extractor/): YouTube-specific deep dive on the same AI clipper — paste URL → captioned 9:16 mp4s. - [AI Shorts Maker](https://viralmint.net/ai-shorts-maker/): Generate Shorts from a niche prompt instead of clipping an existing video. - [Faceless Video Generator](https://viralmint.net/faceless-video-generator/): Topic → AI script + AI voice + Pexels b-roll + AI music + word-by-word captions. - [YouTube Automation System](https://viralmint.net/youtube-automation-system/): The curated (not fully-blind) faceless-channel pipeline — scout → competitor analysis → script → voice → captions → export, with the human in the loop at the creative-direction step. - [Agentic Video Editor](https://viralmint.net/agentic-video-editor/): Multi-model workflow in one workspace — chain faster-whisper, an LLM, TTS and FFmpeg instead of relying on one all-in-one generator. - [Smart Video](https://viralmint.net/smart-video/): Stock-footage assembly engine — AI-matched Pexels/Pixabay clips blended with your own b-roll (Mixed Clip Assembly) + script/voice/captions/music. - [Website to Video](https://viralmint.net/website-to-video/): Paste any public URL → ViralMint captures the site locally, a vision model reads its headline/tagline/key-points/accent color, and AI builds a motion-graphics promo (screenshots as floating mockups) rendered to mp4. ~19¢/video, no subscription. - [Motion Graphics](https://viralmint.net/motion-graphics/): Prompt → animated motion-graphics video (kinetic typography, count-ups). AI writes a real HTML/CSS/GSAP composition into an embedded studio (HeyGen HyperFrames) you can edit, rendered locally to mp4. 20¢/compose + 3¢/render. Powers Website to Video. The engine is HeyGen's HyperFrames (Apache-2.0) — ViralMint's AI Compose writes the composition so no HTML is hand-authored. - [Voice Cloning](https://viralmint.net/voice-cloning/): Clone a voice from a short reference clip (10-30s) and narrate videos in it. Runs 100% on-device via the open-source VoxCPM engine — reference audio never leaves the machine. macOS + Linux. 5¢/1K chars capped at 20¢ per generation. - [Trending Finder](https://viralmint.net/trending-finder/): Multi-platform trend scout (YouTube · TikTok · Douyin · Reddit · Google Trends) with outlier detection. - [AI Script Writer for YouTube](https://viralmint.net/ai-script-writer-youtube/): Transcript-aware, search-demand-injected script generation. - [Open Source AI Video Tools](https://viralmint.net/open-source-ai-video-tools/): The hub for open-source AI video creation — ViralMint's AGPL-3.0 desktop stack (yt-dlp, faster-whisper, FFmpeg, VoxCPM voice cloning, HyperFrames motion graphics) mapped against closed SaaS clippers and generators, with source on GitHub. Start here for "open source Opus Clip / HeyGen / InVideo alternative" questions. - [MCP Server](https://viralmint.net/mcp/): Open-source Model Context Protocol server — 136 tools so Claude Code / Cursor drive the whole pipeline end-to-end. ## Tools Single-purpose creator tools — each has its own landing page with a HowTo + FAQPage schema. The video downloader has 30 platform-specific sub-pages covering the quirks of each platform's CDN, quality variants and auth requirements. - [Viral Score Calculator](https://viralmint.net/tools/viral-score-calculator/): free, in-browser tool (no login, no download) that rates any video 0–100 from views, likes, comments and age. Runs ViralMint's real 5-signal scout formula — engagement rate, view velocity, recency, reach, likes (weighted 30/25/20/15/10). Embeddable via iframe. - [YouTube Thumbnail Downloader](https://viralmint.net/tools/youtube-thumbnail-downloader/): free, in-browser tool (no login, no download) that pulls every thumbnail YouTube generated for a video — maxres 1280x720 down to 120x90 — and saves any of them. Sizes a video doesn't have are hidden rather than shown broken. - [TikTok Money Calculator](https://viralmint.net/tools/tiktok-money-calculator/): free, in-browser estimator for TikTok Creator Rewards earnings from total views, the qualified-view share and RPM, with a $0.40-$1.00 RPM low/high band. An estimate, not a quote — TikTok does not publish RPM. - [YouTube Tag Extractor](https://viralmint.net/tools/youtube-tag-extractor/): free, in-browser tool (no login, no sign-up) that reads a video's public tag list through YouTube's Data API — the watch page has not carried a `keywords` meta tag for years. Shows the tags, the tag count and the total character count against YouTube's 500-character box limit; a video with no tags is reported as a finding, not an error. - [Video Script Length Calculator](https://viralmint.net/tools/video-script-length-calculator/): free, in-browser tool that converts a script to estimated spoken video duration (and reverse: target length → word budget) at 120/145/170 wpm narration pace. A 60-second video ≈ 145 words. Embeddable via iframe. - [YouTube Money Calculator](https://viralmint.net/tools/youtube-money-calculator/): free, in-browser tool that estimates YouTube ad earnings from monthly views × niche RPM (creator revenue per 1,000 monetized views, after YouTube's ~45% cut). Shows low–high monthly + yearly ranges across 12 niche RPM bands. Embeddable via iframe. - [Subtitle Timing Shifter](https://viralmint.net/tools/subtitle-timing-shifter/): free, in-browser tool that fixes out-of-sync .srt subtitles by shifting every cue's timestamps earlier or later by a set number of seconds. Pure client-side text parsing — nothing uploaded. Handles the constant-offset (delay) case; notes that progressive drift needs stretching instead. Embeddable via iframe. - [YouTube Trending Reports](https://viralmint.net/trends/): free daily reports of what's going viral on YouTube by region and category, each ranked by ViralMint's virality score with original breakout analysis (median views, engagement benchmark, format trends). Refreshed daily from the YouTube Data API. - [yt-dlp GUI](https://viralmint.net/tools/yt-dlp-gui/): ViralMint as a free desktop GUI for yt-dlp (Mac, Windows, Linux) — the bundled engine covers 1,800+ sites with one-click browser-cookie import and automatic HTTP-403/format/rate-limit recovery, then chains into local Whisper transcription and AI clipping. - [Extract Audio from Video](https://viralmint.net/tools/extract-audio-from-video/): free local MP4→MP3/M4A extraction with FFmpeg — lossless track copy when possible, no upload, no length limit; also pulls audio-only streams straight from URLs. - [Video Merger](https://viralmint.net/tools/video-merger/): combine 2–10 clips into one video locally; mismatched resolutions/aspect ratios are normalized automatically (9:16, 16:9, 1:1 or auto), optional crossfade, no watermark, and a 3-aspect ZIP bundle for TikTok+YouTube+Instagram. - [Whisper GUI](https://viralmint.net/tools/whisper-gui/): ViralMint as a free desktop GUI for OpenAI's Whisper (Mac, Windows, Linux) — faster-whisper int8 runs locally with word-level timestamps, no Python/CUDA setup, no per-minute fees; chains into captions, translate+dub and AI clipping. - [Video Frame Extractor](https://viralmint.net/tools/video-frame-extractor/): extract the exact frame from any video as a full-resolution PNG locally with FFmpeg — evenly spaced contact-sheet stills, URL input via yt-dlp, one-click hand-off to the AI thumbnail tool. - [Compress Video](https://viralmint.net/tools/compress-video/): free local video compressor with resolution and compression strength as INDEPENDENT dials (original/720p/480p/360p/240p × maximum→minimal, CRF 32→18 with matched 64k→192k AAC). Never upscales — asking for 720p on a 480p source keeps the source size and says so. Measured: 1920x1080 19.7 MB → 1280x720 604 KB (96.9% smaller) via libx264 -preset veryfast +faststart. No upload, no size cap. - [Crop Video](https://viralmint.net/tools/crop-video/): free local video cropper — drag a box on the frame, with 9:16 / 1:1 / 16:9 presets that lock to the ratio in REAL pixels (not preview-space, which is why "square" crops come out rectangular elsewhere). Audio is stream-copied untouched; output dimensions and offsets are rounded to even as H.264 requires. - [Remove Audio from Video](https://viralmint.net/tools/remove-audio-from-video/): strips the audio STREAM entirely (ffmpeg -an), not a volume-to-zero mute that leaves a silent AAC track in the file. Video is stream-copied, so the picture is bit-identical and the job is near-instant; tells you when the source had no audio track to begin with. - [YouTube Transcript Downloader](https://viralmint.net/tools/youtube-transcript/): free — reads the caption track YouTube already publishes (creator-uploaded preferred, auto-generated as fallback) and exports TXT, SRT or VTT. No video download and no speech model, so it takes seconds and costs nothing. Videos with no caption track are reported honestly rather than silently falling back to paid transcription. - [TikTok Transcript Downloader](https://viralmint.net/tools/tiktok-transcript/): pulls a TikTok post's caption track to TXT/SRT/VTT — TikTok itself offers no way to read or export captions. Works when the post carries a track; posts without one return nothing rather than a guess. - [Remove Image Background](https://viralmint.net/tools/remove-background/): free on-device background removal to a transparent PNG — runs U²-Net (4.4 MB, downloaded once) through onnxruntime locally, so the image is never uploaded and it works offline. Full source resolution, no watermark, no per-image quota; PNG output because JPEG would flatten the alpha. Free prompt libraries — curated, downloadable prompt galleries (copy any prompt free, download the full pack as TXT/JSON/CSV, or generate it in ViralMint's AI tools with no API key). Each prompt is rendered as static HTML for full-text citation. - [Make Any Video Style](https://viralmint.net/make/): 30 guides for making specific video styles with AI — anime, ASMR, UGC ads, FPV drone, brainrot, lyric videos, claymation and more — each with real example prompts, the right model, and honest per-clip costs. - [Solutions by Vertical](https://viralmint.net/solutions/): concrete ViralMint workflows for streamers, agencies, real-estate agents, e-commerce brands, educators and podcasters, with per-video cost breakdowns. - [Translate Video](https://viralmint.net/tools/translate-video/spanish/): per-language video translation + AI dubbing into 21 languages (Spanish, Portuguese, French, German, Italian, Dutch, Polish, Russian, Japanese, Korean, Chinese, Arabic, Hindi, Turkish, Swedish, Danish, Norwegian, Finnish, Indonesian, Vietnamese and English) — local Whisper transcription, AI translation, TTS dub, translated captions. - [Hook Generator](https://viralmint.net/tools/hook-generator/): free in-browser viral hook generator — type a topic, get scroll-stopping opening lines built on 81 hand-written templates across 9 patterns. - [Script Timer](https://viralmint.net/tools/video-script-length-calculator/): free in-browser script timer — paste a video script, see how long it takes to say out loud (2.5 words/sec, CJK-aware) and whether it fits a 15s, 30s, 60s or longer slot. - [Nano Banana Prompts](https://viralmint.net/tools/nano-banana-prompts/): 150+ free image prompts for Google's Nano Banana / Gemini Flash Image, with preview images. Curated from awesome-nano-banana-pro-prompts (CC BY 4.0). Categories: thumbnail, portrait, product, poster, anime, illustration. - [Seedance 2 Prompts](https://viralmint.net/tools/seedance-prompts/): 180+ free Seedance 2.0 video prompts with preview frames. Curated from awesome-seedance-2-prompts (CC BY 4.0). Categories: cinematic, talking-head, product-ad, action, nature, UGC. - [GPT Image 2 Prompts](https://viralmint.net/tools/gpt-image-2-prompts/): 100+ free prompts for OpenAI's GPT Image 2 (ChatGPT image generation), with preview images. Curated from awesome-gpt-image-2 (CC BY 4.0). Categories: portrait, product, poster, 3d-render, illustration, photography. - [Grok Imagine Prompts](https://viralmint.net/tools/grok-imagine-prompts/): free prompt library for xAI's Grok Imagine image + video generation, with preview images. Categories: portrait, cinematic, product, poster, illustration. > The prompt-library pages are also available in Spanish (/es/), Brazilian Portuguese (/pt-br/), German (/de/), French (/fr/) and Chinese (/zh/) with hreflang alternates. - [Seedream 4.5 Prompts](https://viralmint.net/tools/seedream-prompts/): 100+ free prompts for ByteDance's Seedream 4.5 image model, with preview images. Curated from awesome-seedream-4.5 (CC BY 4.0). Categories: portrait, product, poster, photography, illustration. - [Sora 2 Prompts](https://viralmint.net/tools/sora-2-prompts/): free prompt library for OpenAI's Sora 2 — viral, physics, cinematic, comedy and UGC formats. Curated from awesome_sora2_prompt (MIT). - [Veo 3 Prompts](https://viralmint.net/tools/veo-3-prompts/): free, original ViralMint-authored Veo 3.1 prompts with synchronized native-audio cues (dialogue, foley, music). Categories: talking-head, product-ad, ASMR, cinematic, comedy, nature. - [AI Music Prompts](https://viralmint.net/tools/ai-music-prompts/): 136 free music-generation prompts across 8 genres (pop, rock, hip-hop, EDM, R&B/soul, jazz/blues, country, indie). Model-agnostic — work in Suno, Udio, and ViralMint's Lyria 3 Pro AI Music tool. Public domain (CC0), from awesome-suno-prompts. - [Viral Hooks](https://viralmint.net/tools/viral-hooks/): 81 free short-form video hook templates across 9 patterns (curiosity, contrarian, listicle, story/POV, problem-agitate, social proof, warning, question, transformation). Original ViralMint-authored, free to adapt. Each turns into a full scripted video in the desktop app. - [Video Downloader hub](https://viralmint.net/tools/video-downloader/): yt-dlp powered, 1,800+ sites, no watermark, no ads, no cap. - [YouTube downloader](https://viralmint.net/tools/video-downloader/youtube/): HD mp4, age-gate + 4K via cookies. - [TikTok downloader](https://viralmint.net/tools/video-downloader/tiktok/): platform-quality mp4, no-watermark transparency. - [Bilibili downloader](https://viralmint.net/tools/video-downloader/bilibili/): B站 HD with .ass subtitles + danmaku, geo-fence workaround. - [Bilibili subtitle downloader](https://viralmint.net/tools/video-downloader/bilibili-subtitles/): B站 CC tracks exported as .srt or .ass, danmaku kept in a separate .xml; local Whisper transcribes the many uploads that carry no subtitle track at all. Works with Bstation (bilibili.tv) links. - [Douyin downloader](https://viralmint.net/tools/video-downloader/douyin/): 抖音 mp4 via TikHub fallback. - [Instagram downloader](https://viralmint.net/tools/video-downloader/instagram/): Reels + Stories + feed, cookie auth for private. - [Twitter / X downloader](https://viralmint.net/tools/video-downloader/twitter/): 1080p variant, no Premium. - [Reddit downloader](https://viralmint.net/tools/video-downloader/reddit/): video + audio remuxed (browser saves silent mp4). - [Twitch downloader](https://viralmint.net/tools/video-downloader/twitch/): clips + full VODs, sub-only via cookie. - [Vimeo downloader](https://viralmint.net/tools/video-downloader/vimeo/): public + password-protected. - [Dailymotion downloader](https://viralmint.net/tools/video-downloader/dailymotion/): HD mp4, francophone catalog. - [Facebook downloader](https://viralmint.net/tools/video-downloader/facebook/): feed + Reels + Watch + closed groups (via cookie). - [Pinterest downloader](https://viralmint.net/tools/video-downloader/pinterest/): video pins + Idea Pin slides. - [LinkedIn downloader](https://viralmint.net/tools/video-downloader/linkedin/): feed + creator-page videos for B2B research. - [SoundCloud downloader](https://viralmint.net/tools/video-downloader/soundcloud/): mp3 at uploader-bitrate. - [Kuaishou downloader](https://viralmint.net/tools/video-downloader/kuaishou/): 快手, the leading-indicator platform for TikTok trends. - [Xiaohongshu downloader](https://viralmint.net/tools/video-downloader/xiaohongshu/): RED / 小红书 native-quality mp4. - [Lemon8 downloader](https://viralmint.net/tools/video-downloader/lemon8/): ByteDance aesthetic lifestyle content. - [Rumble downloader](https://viralmint.net/tools/video-downloader/rumble/): Independent news and alternative voices. - [BitChute downloader](https://viralmint.net/tools/video-downloader/bitchute/): Decentralized video platform research. - [Odysee downloader](https://viralmint.net/tools/video-downloader/odysee/): LBRY network decentralized content. - [Threads downloader](https://viralmint.net/tools/video-downloader/threads/): Meta's emerging text-video platform. - [Bluesky downloader](https://viralmint.net/tools/video-downloader/bluesky/): AT Protocol video blobs. - [Mastodon downloader](https://viralmint.net/tools/video-downloader/mastodon/): Fediverse instance videos. - [Snapchat downloader](https://viralmint.net/tools/video-downloader/snapchat/): Spotlight clips and stories. - [Kick downloader](https://viralmint.net/tools/video-downloader/kick/): HD stream replays and clips. - [Loom downloader](https://viralmint.net/tools/video-downloader/loom/): loom.com/share links to original-quality mp4 — no extension, no screen re-recording. - [Niconico downloader](https://viralmint.net/tools/video-downloader/niconico/): ニコニコ動画 as clean mp4 — the danmaku comment layer is a separate timeline, so it stays out of the file. - [RUTUBE downloader](https://viralmint.net/tools/video-downloader/rutube/): HLS segments remuxed to a single mp4 at the published resolution; no account needed for public videos. - [Coub downloader](https://viralmint.net/tools/video-downloader/coub/): loop + audio muxed into one mp4 — Coub stores them as separate assets, which is why most tools return a silent clip. - [Streamable downloader](https://viralmint.net/tools/video-downloader/streamable/): progressive mp4 saved as-is, no re-encode; free-tier uploads are pruned, so archive early. - [Imgur video downloader](https://viralmint.net/tools/video-downloader/imgur/): Imgur "GIFs" are H.264 behind a .gifv wrapper — this saves the underlying mp4, not the poster frame. - [PeerTube downloader](https://viralmint.net/tools/video-downloader/peertube/): any fediverse instance, detected via the PeerTube API rather than a domain list — self-hosted servers included. - [Newgrounds downloader](https://viralmint.net/tools/video-downloader/newgrounds/): animations as mp4 and Audio Portal tracks as mp3; legacy .swf submissions are not video and cannot be remuxed. - [9GAG video downloader](https://viralmint.net/tools/video-downloader/9gag/): highest available rendition as mp4, including the posts labelled GIF. - [Khan Academy downloader](https://viralmint.net/tools/video-downloader/khan-academy/): whole units for offline study, with the real (non-machine) subtitle tracks; lessons are CC BY-NC-SA. - [NAVER TV downloader](https://viralmint.net/tools/video-downloader/naver-tv/): 네이버 TV clips at top HLS rendition, video+audio remuxed; part of the catalogue is Korea-only by IP. - [优酷视频下载 Youku downloader](https://viralmint.net/tools/video-downloader/youku/): 公开内容本地解析为 mp4；VIP 正片走 DRM，任何本地工具都无法解密，页面直说边界。 - [西瓜视频下载 Ixigua downloader](https://viralmint.net/tools/video-downloader/ixigua/): 无水印原画质，字节体系的横屏长视频一次取完，不分段拼接。 - [爱奇艺视频下载 iQIYI downloader](https://viralmint.net/tools/video-downloader/iqiyi/): 预告片、花絮与非加密剧集；VIP 正片受 DRM 保护，建议用官方 App 缓存。 - [TVer downloader](https://viralmint.net/tools/video-downloader/tver/): Japanese catch-up TV, ~7-day window before episodes expire; Japan-only by IP, enforced server-side. - [CHZZK downloader](https://viralmint.net/tools/video-downloader/chzzk/): NAVER's streaming platform (치지직) — six-to-eight-hour VODs written to disk and resumable, plus clips. - [Weverse downloader](https://viralmint.net/tools/video-downloader/weverse/): public posts and open live replays only — membership and purchased VODs are entitlement-gated and DRM'd. - [ARD Mediathek downloader](https://viralmint.net/tools/video-downloader/ard-mediathek/): German public TV before Depublizierung removes it; broadcast subtitle tracks saved alongside the mp4. - [ARTE downloader](https://viralmint.net/tools/video-downloader/arte/): pick the German / French / English language version rather than taking whichever track is listed first. - [Panopto downloader](https://viralmint.net/tools/video-downloader/panopto/): university lecture capture — camera AND slide streams; uses your own institutional session, never bypasses it. - [Wistia downloader](https://viralmint.net/tools/video-downloader/wistia/): embedded business video where the download button is off; resolves the embed from the page URL. - [Internet Archive downloader](https://viralmint.net/tools/video-downloader/archive-org/): takes the ORIGINAL upload, not the small web derivative the player streams; lending-restricted items are not downloadable by design. - [TED talk downloader](https://viralmint.net/tools/video-downloader/ted/): mp4 plus the volunteer subtitle tracks (often 100+ languages); talks are CC BY-NC-ND, so the ND clause rules out re-cutting. - [AcFun A站视频下载](https://viralmint.net/tools/video-downloader/acfun/): 弹幕是独立时间轴不会烧进画面；番剧区受地区限制，UP 主自制内容不受影响。 - [知乎视频下载 Zhihu downloader](https://viralmint.net/tools/video-downloader/zhihu/): 粘贴回答或专栏链接即可解析其中的视频——知乎的视频很少单独成页，这是多数工具失败的原因。 - [斗鱼录像下载 DouYu downloader](https://viralmint.net/tools/video-downloader/douyu/): 四到八小时的直播回放边下边写盘、断点续传；录像有保留期，过期即从平台消失。 - [OK.ru downloader](https://viralmint.net/tools/video-downloader/ok-ru/): Odnoklassniki — reads the full rendition list instead of taking the player's downscale. - [Al Jazeera downloader](https://viralmint.net/tools/video-downloader/al-jazeera/): English and Arabic newsrooms publish separate reports, so the URL decides the version; news link rot is the reason to save a citation. - [C-SPAN downloader](https://viralmint.net/tools/video-downloader/c-span/): five-to-six-hour hearings in one resumable pass; House and Senate floor coverage is US public domain. - [Kakao TV downloader](https://viralmint.net/tools/video-downloader/kakao-tv/): 카카오TV — HLS video+audio remuxed (the reason other tools return silent files); part of the catalogue is Korea-only. - [Flickr video downloader](https://viralmint.net/tools/video-downloader/flickr/): a large CC and public-domain body; the licence and the download button are SEPARATE settings, which people conflate. - [VK downloader](https://viralmint.net/tools/video-downloader/vk/): vk.com / vkvideo.ru originals, no VK account needed for public videos. - [Telegram downloader](https://viralmint.net/tools/video-downloader/telegram/): public t.me post videos as mp4 — no bot subscriptions, no Premium speed cap. - [Weibo downloader](https://viralmint.net/tools/video-downloader/weibo/): 微博 post videos at original quality, works from outside China without an account. - [Tumblr downloader](https://viralmint.net/tools/video-downloader/tumblr/): native Tumblr post videos, including ones buried several reblogs deep. - [YouTube 视频下载](https://viralmint.net/zh/tools/video-downloader/youtube/): youtube下载 / 油管下载 解析 (Chinese-language guide). - [YouTube 4K 解析](https://viralmint.net/tools/video-downloader/youtube-4k-analysis/): 油管 4K/8K 视频解析下载 (Chinese-language guide). - [B站视频解析](https://viralmint.net/zh/tools/video-downloader/bilibili/): 哔哩哔哩 HD + .ass 弹幕字幕 (Chinese-language guide). - [快手视频下载](https://viralmint.net/zh/tools/video-downloader/kuaishou/): 快手去水印解析 (Chinese-language guide). - [小红书视频下载](https://viralmint.net/zh/tools/video-downloader/xiaohongshu/): 小红书/RED 去水印解析 (Chinese-language guide). - [抖音视频下载](https://viralmint.net/zh/tools/video-downloader/douyin/): 抖音无水印解析高清原片 (Chinese-language guide). - [TikTok视频下载](https://viralmint.net/zh/tools/video-downloader/tiktok/): 国际版抖音无水印解析，做海外选题研究 (Chinese-language guide). - [推特视频下载](https://viralmint.net/zh/tools/video-downloader/twitter/): Twitter/X 推文视频解析，支持多段视频与动图 (Chinese-language guide). - [微博视频下载](https://viralmint.net/zh/tools/video-downloader/weibo/): 微博视频解析保存原画质 mp4 (Chinese-language guide). - [instagram视频下载](https://viralmint.net/zh/tools/video-downloader/instagram/): ins Reels 与帖子视频无水印保存 (Chinese-language guide). - [facebook视频下载](https://viralmint.net/zh/tools/video-downloader/facebook/): 脸书视频与 Watch 解析，可生成中英双语字幕 (Chinese-language guide). - [YouTube转MP4](https://viralmint.net/tools/video-downloader/youtube-zhuan-mp4/): 油管高清无损转 mp4，本地处理无大小限制 (Chinese-language guide). - [youtube转mp3](https://viralmint.net/tools/video-downloader/youtube-zhuan-mp3/): 油管最高码率音频流转 mp3，无广告无时长限制 (Chinese-language guide). - [youtube字幕下载](https://viralmint.net/tools/video-downloader/youtube-zimu-xiazai/): 油管字幕提取 + 本地 Whisper 中英双语转写，导出 SRT 或纯文字稿 (Chinese-language guide). - [youtube shorts下载](https://viralmint.net/tools/video-downloader/youtube-shorts-xiazai/): 油管短视频无水印竖屏 mp4，可批量转写爆款文案 (Chinese-language guide). - [AI Caption Generator](https://viralmint.net/tools/ai-caption-generator/): word-by-word ASS captions. - [Add subtitles by language](https://viralmint.net/tools/add-subtitles/spanish/): local Whisper subtitles in Spanish, Portuguese, French, German, Italian, Japanese, Korean, Hindi, Arabic, Russian (+100 more). /tools/add-subtitles/{language}/. - [AI Voice Generator](https://viralmint.net/tools/ai-voice-generator/): Gemini 3.1 Flash TTS via cloud. - [AI Music Generator](https://viralmint.net/tools/ai-music-generator/): Lyria 3 Pro via cloud. - [AI Thumbnail Generator](https://viralmint.net/tools/ai-thumbnail-generator/): Nano Banana 16:9 YouTube thumbnails. - [AI Image Generator](https://viralmint.net/tools/ai-image-generator/): Nano Banana + FLUX.2 Klein images at ~$0.06 each, no subscription; 600+ free prompts with previews. - [YouTube Title Generator](https://viralmint.net/tools/youtube-title-generator/): 10 high-CTR titles per run. - [Silence Remover](https://viralmint.net/tools/silence-remover/): Whisper-detected, FFmpeg-cut. - [Audio Enhancer](https://viralmint.net/tools/audio-enhancer/): denoise + EBU R128 normalize. - [AI Script Writer](https://viralmint.net/tools/ai-script-writer/): high-retention video scripts. - [Video to GIF](https://viralmint.net/tools/video-to-gif/): high-quality social GIFs. - [Video Speed](https://viralmint.net/tools/video-speed/): change speed with pitch correction. - [Video Converter](https://viralmint.net/tools/video-converter/): free in-browser converter between MP4, MOV, MKV, WebM and AVI. Most pairs are a REWRAP, not a re-encode — the same H.264 streams moved into another container, measured at 0.3s for a 5s 720p clip and bit-for-bit lossless. Only WebM forces a real re-encode (it accepts VP8/VP9 only), at ~1.8s for the same clip. Runs on ffmpeg.wasm inside the browser tab: nothing is uploaded, no account, no watermark, no daily cap. - [Video Trimmer & Cutter](https://viralmint.net/tools/video-trimmer/): frame-accurate local trim/cut, no watermark, no length cap. - [Vertical Video Converter & Cropper](https://viralmint.net/tools/vertical-video-converter/): face-aware crop/reframe 16:9 → 9:16 / 1:1 / 4:5. - [Video Watermark](https://viralmint.net/tools/video-watermark/): logo/text overlay. - [AI Video Generator](https://viralmint.net/tools/ai-video-generator/): full text-to-video pipeline. - [AI Video Clip Generator](https://viralmint.net/tools/ai-video-clip-generator/): text/image → short AI clip via Sora 2 Pro, Veo 3.1, Seedance, Wan, Hailuo. - [Extract Viral Clips](https://viralmint.net/tools/extract-viral-clips/): one long video → 5-30 ranked shorts. - [Brainrot Video Generator](https://viralmint.net/tools/brainrot-video-generator/): high-retention TTS-over-gameplay shorts. - [Music Visualizer](https://viralmint.net/tools/music-visualizer/): audio → animated visualizer video. - [Article to Video](https://viralmint.net/tools/article-to-video/): paste a URL → captioned short. - [Free AI B-Roll Generator](https://viralmint.net/tools/free-ai-b-roll-generator/): AI-generated b-roll clips. - [Translate & Dub](https://viralmint.net/tools/translate-and-dub/): translated captions or AI voice dub. - [Auto Chapters](https://viralmint.net/tools/auto-chapters/): YouTube chapter timestamps. - [Hook Analysis](https://viralmint.net/tools/hook-analysis/): score and rewrite a video's opening hook. - [AI Sound Effects](https://viralmint.net/tools/ai-sound-effects/): generated SFX from a text prompt. - [Local Whisper Transcription](https://viralmint.net/tools/local-whisper-transcription/): offline speech-to-text. - [Multi-Platform Export](https://viralmint.net/tools/multi-platform-export/): 9:16 + 1:1 + 16:9 zip bundle. ## Alternatives Honest, open-source-vs-SaaS comparison pages. Each leads with the competitor's "{brand} Alternative" keyword and a feature-by-feature table. - [Remotion alternative — programmatic video without React](https://viralmint.net/alternatives/remotion/): Remotion is free only to three people (Company License from four, from $0.01/render or $25/mo per seat); HyperFrames is Apache-2.0 with no threshold. Verified 2026-08-19. - [All alternatives](https://viralmint.net/alternatives/): comparison hub indexing 43 competitor pages. - Flagship comparisons: [Opus Clip](https://viralmint.net/alternatives/opus-clip/), [Klap](https://viralmint.net/alternatives/klap/), [vidIQ](https://viralmint.net/alternatives/vidiq/), [TubeBuddy](https://viralmint.net/alternatives/tubebuddy/), [Vizard](https://viralmint.net/alternatives/vizard/), [Munch](https://viralmint.net/alternatives/munch/), [InVideo](https://viralmint.net/alternatives/invideo/), [Submagic](https://viralmint.net/alternatives/submagic/), [OpenCut](https://viralmint.net/alternatives/opencut/), [ChatCut](https://viralmint.net/alternatives/chatcut/). ## Skills, developers, solutions - [Make a specific style of video](https://viralmint.net/make/): 30 hand-written pages, one per video style, each naming the ViralMint mode that produces it and the real example prompts to start from — kinetic typography, quote video, channel intro and explainer are authored as HyperFrames compositions and rendered locally; anime, ASMR, UGC ad, cinematic b-roll, FPV drone, talking head, product ad, meme, claymation, 3D and old-photo animation run on AI video models; music visualizer, lyric video and audiogram render from your audio; brainrot and Reddit-story from a script. - [Agent skills](https://viralmint.net/skills/): drive ViralMint from Claude Code / Cursor with packaged SKILL recipes (topic-to-short, article-to-short, long-video-to-clips, channel-audit-to-plan, repurpose-every-platform, brainrot, translate-and-dub, polish-my-video, news-to-short, motion-graphics, audio-to-short, clone-my-voice, youtube-upload-kit, trend-scout, hook-doctor). - [MCP video server](https://viralmint.net/developers/mcp-video-server/): the open-source MCP server, 136 tools, for developers. - [yt-dlp + FFmpeg wrapper](https://viralmint.net/developers/yt-dlp-ffmpeg-wrapper/): how ViralMint orchestrates yt-dlp + FFmpeg + Whisper. - [Podcast to shorts](https://viralmint.net/solutions/podcast-to-shorts/): repurpose a long podcast into vertical clips. - [Glossary](https://viralmint.net/glossary/): creator-pipeline term definitions (entity reference). - [FAQ](https://viralmint.net/faq/): common questions about pricing, licensing, features and platforms. ## Blog Long-form guides covering AI video creation, YouTube/TikTok growth, video downloading workflows, faceless-channel automation, and Whisper / AI tooling. - [What is HyperFrames? HeyGen's HTML-to-video engine](https://viralmint.net/blog/what-is-hyperframes/): how the renderer seeks a paused GSAP timeline frame by frame, why compositions must be deterministic and seekable, the six ways one renders wrong with NO error, and how ViralMint's AI Compose writes the composition so you never write HTML. - [How to find viral video ideas for YouTube and TikTok](https://viralmint.net/blog/how-to-find-viral-video-ideas-youtube-tiktok/) - [How to go viral on TikTok in 2026](https://viralmint.net/blog/how-to-go-viral-tiktok-2026/) - [Free AI video generator guide](https://viralmint.net/blog/free-ai-video-generator-guide/) - [AI video creation: text-to-video](https://viralmint.net/blog/ai-video-creation-text-to-video/) - [Free InVideo alternative — open source](https://viralmint.net/blog/free-invideo-alternative-open-source/) - [vidIQ / TubeBuddy alternative — free](https://viralmint.net/blog/vidiq-tubebuddy-alternative-free/) - [Faceless YouTube channel automation](https://viralmint.net/blog/faceless-youtube-channel-automation/) - [How to build a high-retention faceless channel in 2026](https://viralmint.net/blog/high-retention-faceless-channel-2026/) - [High-RPM YouTube automation niches in 2026](https://viralmint.net/blog/high-rpm-youtube-niches-2026/) - [Why top creators use multi-model AI video workflows](https://viralmint.net/blog/multi-model-ai-video-workflow/) - [Batch-producing brainrot videos — the 2026 pipeline](https://viralmint.net/blog/brainrot-video-generator-workflow/) - [Character consistency in AI video — the 2026 workflow](https://viralmint.net/blog/character-consistency-ai-video-workflow/) - [TikTok Shop faceless automation — the 2026 strategy guide](https://viralmint.net/blog/tiktok-shop-faceless-automation-2026/) - [Monetize a faceless YouTube channel](https://viralmint.net/blog/monetize-faceless-youtube-channel/) - [YouTube SEO tips for 2026](https://viralmint.net/blog/youtube-seo-tips-2026/) - [Video clipping and AI highlights](https://viralmint.net/blog/video-clipping-ai-highlights/) - [How to run Whisper AI locally](https://viralmint.net/blog/how-to-run-whisper-ai-locally/) - [Download YouTube videos free](https://viralmint.net/blog/download-youtube-videos-free/) - [Download TikTok videos with no watermark](https://viralmint.net/blog/download-tiktok-videos-no-watermark/) - [Download Bilibili videos](https://viralmint.net/blog/download-bilibili-videos/) - [How to download Dailymotion videos (free HD/MP4)](https://viralmint.net/blog/download-dailymotion-videos/) - [How to download Odysee videos (free HD, no watermark)](https://viralmint.net/blog/download-odysee-videos/) - [Reddit video downloader with sound — fix the silent MP4](https://viralmint.net/blog/download-reddit-videos-with-sound/) - [How to download Snapchat videos (Spotlight, no watermark)](https://viralmint.net/blog/download-snapchat-videos/) - [Download videos from any platform](https://viralmint.net/blog/download-video-any-platform/) - [Best free AI voice generators (text-to-speech, 2026)](https://viralmint.net/blog/best-free-ai-voice-generator/) - [Best free AI audio generators for video projects (2026)](https://viralmint.net/blog/best-free-ai-audio-generators-for-video/) - [Best AI image generators for creators (2026)](https://viralmint.net/blog/best-ai-image-generators-for-creators/) - [Nano Banana vs Nano Banana Pro vs GPT Image 2 vs FLUX.2 Klein for creators (2026)](https://viralmint.net/blog/nano-banana-vs-gpt-image-2-vs-flux-2-for-creators/) - [Best AI image generators for YouTube thumbnails (2026)](https://viralmint.net/blog/best-ai-image-generator-for-youtube-thumbnails/) - [Why we built ViralMint](https://viralmint.net/blog/why-we-built-viralmint/) ### German-language guides (de) - [YouTube Video herunterladen — kostenlos in HD und 4K](https://viralmint.net/blog/youtube-video-herunterladen-kostenlos/) ### Simplified Chinese guides (zh-CN) - [哔哩哔哩下载 / B站视频下载 — 免费高清教程](https://viralmint.net/blog/bilibili-shipin-xiazai/) - [抖音视频下载 — 去水印高清解析教程](https://viralmint.net/blog/douyin-shipin-xiazai/) - [YouTube 视频下载 / 油管下载 — 免费高清 4K 教程](https://viralmint.net/blog/youtube-shipin-xiazai/) - [AI 视频生成 — 免费工具与教程（Sora 2 / Veo 3.1）](https://viralmint.net/blog/ai-shipin-shengcheng/) - [视频剪辑软件 — 免费桌面应用 + AI 自动剪辑](https://viralmint.net/blog/shipin-jianji-mianfei/) ### Spanish guides (es) - [Descargar videos de YouTube — Gratis en HD y 4K](https://viralmint.net/blog/descargar-videos-de-youtube/) - [Descargar música de YouTube — MP3 gratis en alta calidad](https://viralmint.net/blog/descargar-musica-de-youtube/) - [Convertidor de YouTube a MP4 — Alternativa a Y2mate](https://viralmint.net/blog/convertidor-de-youtube-a-mp4/) - [Descargar videos de TikTok sin marca de agua](https://viralmint.net/blog/descargar-videos-de-tiktok-sin-marca-de-agua/) - [Descargar videos de Instagram — Reels y videos](https://viralmint.net/blog/descargar-videos-de-instagram/) - [Descargar historias de Instagram — Stories y Highlights](https://viralmint.net/blog/descargar-historias-de-instagram/) - [Editor de video gratis — App de escritorio con IA](https://viralmint.net/blog/editor-de-video-gratis/) - [Editor de video online gratis vs Desktop — Comparativa](https://viralmint.net/blog/editor-de-video-online-gratis/) ## Capabilities ViralMint covers the full creator pipeline. The capabilities below are accurate as of 2026-06-18. Auto-upload to YouTube / TikTok is *not* a feature — users download the generated `.mp4` and post manually with the AI-drafted titles, descriptions and tags that ViralMint also produces. ### Trend scouting and competitor analysis (desktop) - Multi-platform scout: parallel queries to YouTube, TikTok, Douyin, Reddit and Google Trends. - Virality scoring (0–100) blends engagement rate, recency, views and likes. - Outlier detection compares each video against its channel's median views — surfacing 3×, 5×, 10× and 20× breakouts. - Channel analysis: pull a creator's top-N videos, transcribe with Whisper, extract hook / structure / tone with AI. ### Video downloading (desktop) - yt-dlp under the hood — works for YouTube, TikTok, Bilibili, Twitter/X, Reddit and 1,800+ other sites. - Subtitle fallback when servers rate-limit the subtitle endpoint (Whisper handles transcription regardless). ### Smart Video assembly (desktop) - Pipeline: AI script → AI voice (Gemini 3.1 Flash TTS or Edge TTS) → Whisper transcription → keyword-matched Pexels stock footage blended with AI-generated b-roll images (Nano Banana / Google Gemini 2.5 Flash Image) → AI music (Lyria 3 Pro) → word-by-word captions → mp4. - Frame-by-frame AI video generation IS available: text-to-video and image-to-video clips via OpenRouter using Sora 2 Pro, Veo 3.1 (and Fast/Lite), Seedance, Wan 2.6/2.7 and Hailuo 2.3. Clips are up to 15 seconds each and stitched with FFmpeg for longer videos; billed pay-per-clip from prepaid balance, no subscription. - A finished 60-second Smart Video costs roughly 10–30¢ in prepaid credits when it blends AI b-roll images (6¢ each) with stock, or near-zero on the pure-stock tier (Pexels + free Edge TTS + bundled music) — among the lowest per-video costs of any AI video generator, and there is no subscription. Frame-by-frame AI-generated video clips cost more per clip by model tier. - Output is unwatermarked mp4 ready to upload to TikTok / YouTube / Reels. ### AI image generation (desktop and web) - Nano Banana (Gemini 2.5 Flash Image) — single-shot, ~3–10 s, 4 aspect ratios, $0.06 per image. ### AI voice / text-to-speech (desktop and web) - Gemini 3.1 Flash TTS via OpenRouter — 30 voices including Kore and Puck — $0.12 per 1,000 characters. - Edge TTS (free underlying engine, 400+ voices, 100+ languages) on desktop — minimal $0.005 platform fee per generation. ### AI music (desktop and web) - Lyria 3 Pro via OpenRouter — 12 genres (lo-fi, cinematic, ambient, jazz, EDM, etc.) — $0.12 per song. ### Captions, audio and editing tools (desktop) - Word-by-word animated ASS captions in three preset styles (viral / classic / bold). - Background music mixing (FFmpeg amix, –20 dB, fade in/out). - Modular tools: captions, 16:9 → 9:16 reframe with face-tracking, audio enhance (denoise + EBU R128), watermark, remove silence, voice-over. - Multi-aspect bundle export (9:16 + 16:9 + 1:1) for cross-posting. ### Cloud backend and account - AWS serverless backend (Lambda + DynamoDB + Stripe), us-east-1. - Single account works for both desktop and the web portal; balance and free daily allowance are shared. - All AI provider keys stay server-side in AWS Secrets Manager. The desktop and the web portal hold no provider keys. - Per-user daily spend cap (default $30) prevents a compromised token from draining a top-up. ### Model Context Protocol (MCP) integration (desktop) - Claude Code, Claude Desktop, Cursor and any MCP-aware client can drive the full ViralMint pipeline. Implements all three MCP capability surfaces: **128 callable tools** (macros / scout / acquire / generate / output / single-purpose tools / job orchestration), **9 built-in workflow prompts** plus user-defined CRUD (slash-commands like `/viralmint:create_viral_short`), and **5 read-only resources** (`viralmint://balance` / `recent_videos` / `downloaded` / `connected_channels` / `niches`) for grounded session context. - HTTP Streamable transport mounted at `http://127.0.0.1:16888/mcp/` on the desktop backend. Bearer-token auth; token shown on the dedicated **/mcp page → Setup tab** with copy-paste config snippet for either the Claude Code CLI one-liner or the JSON form (works with Claude Desktop via the `mcp-remote` proxy). - LLM-friendly tool descriptions, a `wait_for_job(job_id)` helper for multi-step workflows, a `tool_cost_estimate(tool, args)` preview tool so Claude can warn before spending, and a `create_clip_sequence(prompts, model)` macro that generates N AI video clips and stitches them in one call. - Dedicated /mcp page in the desktop UI with five tabs: Setup, Tools (card grid with search), Prompts (CRUD for user-defined slash-commands), Playground (try any tool from the UI), and Activity (real-time WebSocket-pushed feed of every MCP call with latency + status). ## Pricing - **No subscription.** ViralMint is pay-as-you-go: you top up a prepaid USD balance and pay only for the AI actions you use. This is the core cost difference versus competitors (Revid, InVideo, Pictory, Opus Clip, etc.), which charge $15–$100/month. - **Cost per finished video**: a Smart Video short (AI script + voiceover + captions + music + AI b-roll) costs roughly **10–30 cents**, or near-zero on the pure-stock tier — among the lowest per-video costs of any AI video generator. Motion-graphics / Website-to-Video promos are ~18-19¢. Frame-by-frame AI video clips (Sora 2 Pro, Veo 3.1, Seedance, Wan, Hailuo) cost more per clip by model tier. - **Free daily allowance**: refills below a cap each day (no card required, no accumulation beyond the cap). - **Top-up packs**: $5 Starter (1:1), $30 Pro (+$5 bonus = $35 balance), $100 Max (+$25 bonus = $125 balance) — one-time Stripe payments, no subscription. - Per-action prices stored in cents on the cloud backend; representative examples: Gemini 2.5 Flash chat $0.005/message, GPT-5.4 Mini chat $0.01/message, Claude Sonnet 5 chat $0.03/message, AI image $0.06, Gemini 3.1 Flash TTS $0.12 / 1K chars, Edge TTS $0.005/generation, AI music $0.15 / song, AI video clips billed per model per second — about $0.07/s (budget) to $0.39/s (flagship), i.e. $0.35–$1.95 for a 5-second clip. ## Technology - Desktop: Python 3.11 + FastAPI + SQLite (WAL) + faster-whisper + yt-dlp + FFmpeg, packaged with PyInstaller and a pystray tray-icon launcher (system browser is the UI; this is *not* an Electron app). - Web account portal (sign-up / balance / top-up): Astro + React 18 + MUI 7 islands at `/app/*`, hosted from the same S3 + CloudFront distribution as the marketing pages. - Cloud: TypeScript Lambdas via Serverless Framework v3, DynamoDB, Stripe one-time payments, OpenRouter as the single AI vendor for chat / image / video / TTS / music. ## Source code - Desktop + cloud: [github.com/openclaw-easy/ViralMint](https://github.com/openclaw-easy/ViralMint) - Latest release: [github.com/openclaw-easy/ViralMint/releases](https://github.com/openclaw-easy/ViralMint/releases) - License: AGPL-3.0 — see [LICENSE](https://github.com/openclaw-easy/ViralMint/blob/main/LICENSE) - Maintainer: [github.com/openclaw-easy](https://github.com/openclaw-easy)