--- title: Video Translation App: Nothing to Install | Smartcat description: Translate videos in your browser: upload, edit subtitles with a live preview, add an AI voice and download in 280+ languages. Try Smartcat free. canonical: https://www.smartcat.com/video-translation-app/ language: en updated: 2026-10-13 --- # Video Translation App: Nothing to Install | Smartcat ## Accurate AI Video Translator for Every Language Smartcat’s AI video translator app helps organizations localize video content by automatically translating videos into 280+ languages. Benefit from natural AI dubbing, precise subtitles, and streamlined workflows that learn from your feedback. - [Book a demo](https://www.smartcat.com/book-a-demo/?main-h-video-translation-app) - [Start free trial](https://www.smartcat.com/sign-up?main-h-video-translation-app) ## 5-Step Process for Video Localization ### Upload your video and select the original language Begin your localization project by uploading your video and selecting its original language for precise translation. ![Choose the source language and upload your video file](https://gqucouwbfxremfdhdosu.supabase.co/storage/v1/object/public/sc-store/1723731544408Step_1.webp) ### Automatic transcription with AI Our AI detects the spoken language and generates a time-aligned transcript in minutes. ![AI swiftly transcribes your video](https://gqucouwbfxremfdhdosu.supabase.co/storage/v1/object/public/sc-store/1723731707832Step_2.webp) ### Generate natural AI voiceover Select from various natural-sounding voice options that sync effortlessly with your subtitles. ![Apply a natural-sounding voiceover in the target language](https://gqucouwbfxremfdhdosu.supabase.co/storage/v1/object/public/sc-store/1723731767217Step_3.webp) ### Review and refine Work with your team in real time to adjust subtitles and fine-tune the voiceover for perfect alignment. ![Collaboratively edit subtitles and voice scripts](https://gqucouwbfxremfdhdosu.supabase.co/storage/v1/object/public/sc-store/1723731788076Step_4.webp) ### Download your localized video Export the fully localized video complete with natural AI dubbing and embedded subtitles, ready for distribution. ![Export your video with integrated subtitles and dubbing](https://gqucouwbfxremfdhdosu.supabase.co/storage/v1/object/public/sc-store/1723732066168Step_5.webp) ## A Complete Video Translation App in Your Browser **AI transcription and translation** into 280+ languages, all online. A browser-based **Subtitle Editor** with video preview and timeline. **Speaker detection** that labels each voice in the transcript. **Smartcat Drive** keeps every source file and export in one place. ## Why Teams Choose a Web App over Desktop Video Software ### 0 ### Software to install Smartcat runs in the browser. Sign in and the uploader, **Subtitle Editor** and AI voices are ready, with nothing to download or update. ### 280+ ### Languages in one app Translate from and into **280+ languages** in any direction, including Chinese, Japanese and Arabic. ### 15 days ### Free trial, no card Start with **15,000 Smartwords** and full access to translation features. No credit card required. ### Upload ### Upload a Video and Start Translating from Your Browser Sign in and drop in a video of up to **6 GB**. Smartcat detects the source language and transcribes the speech while you choose target languages. No plugins, codecs or desktop software to set up first. ![Upload a video in the browser and choose target languages](https://gqucouwbfxremfdhdosu.supabase.co/storage/v1/object/public/sc-store/17254863036201723732197008Tab_image.webp) - [Upload a video](https://smartcat.com/sign-up?main-cta1-video-translation-app) ### Online editor ### Edit Subtitles Online with a Live Video Preview The **Subtitle Editor** shows source and translation side by side, with the video and a timeline next to them. Adjust start and end times, split or merge cues and confirm each line. ![Browser-based Subtitle Editor with source, translation, video preview and timeline](https://gqucouwbfxremfdhdosu.supabase.co/storage/v1/object/public/sc-store/1718697935613tab-placeholder.png) - [Open the editor](https://smartcat.com/sign-up?main-cta2-video-translation-app) ### Voice preview ### Preview AI Voices Before You Dub Play any line in a chosen **AI voice** right in the editor. Previews do not use Smartwords, so you can compare voices before generating the full dub. ![Preview an AI voice on a translated line inside the editor](https://gqucouwbfxremfdhdosu.supabase.co/storage/v1/object/public/sc-store/1718697935613tab-placeholder.png) - [Try AI dubbing](https://smartcat.com/sign-up?main-cta3-video-translation-app) ### Cloud storage ### Keep Every Version in Smartcat Drive Source videos, dubbed versions and subtitle files stay in **Smartcat Drive**, where you also follow dubbing progress. Sign in on another computer and the whole project is waiting for you. ![Source videos, dubbed versions and subtitle files stored in Smartcat Drive](https://gqucouwbfxremfdhdosu.supabase.co/storage/v1/object/public/sc-store/1718697935613tab-placeholder.png) - [Open your Drive](https://smartcat.com/sign-up?main-cta4-video-translation-app) ### Share ### Invite Reviewers with an Email or a Link Send an invitation by **email or link** to a colleague, an agency or a Marketplace linguist. They review in the same browser editor. Plans include unlimited users, so nobody needs an extra licence. ![Invite a colleague, agency or Marketplace linguist by email or link](https://gqucouwbfxremfdhdosu.supabase.co/storage/v1/object/public/sc-store/1718697935613tab-placeholder.png) - [Invite a reviewer](https://smartcat.com/sign-up?main-cta5-video-translation-app) ## Easy to Set Up and Use, According to G2 ### 9.6/10 Ease of setup on G2 ### 9.3/10 Ease of use on G2 ### 1,000+ Enterprise brands ## Guides for the Smartcat Video App ### Add AI Dubbing to a Video, Step by Step Read the guide From upload to a dubbed export, inside the Subtitle Editor. ### The Subtitle Editor, Explained Read the guide Layout, cue settings and reading-speed limits in the browser editor. ### Put Translated Subtitles on Your Video Read the article How translated subtitles fit into your existing video editing workflow. Walk Through the Video App with a Specialist - [Book a demo](https://www.smartcat.com/book-a-demo/?from_video-translation-app) ## What Customers Achieved with Smartcat ### 4x ### Quicker turnaround Smith+Nephew moved from an average of **10 days** with its previous agency to **two to three days**. - [Read their story](https://www.smartcat.com/cases/smith-nephew/) ### 30% ### Extra output Wunderman Thompson Commerce produced **30% more** project output with the same resources. - [Read their story](https://www.smartcat.com/cases/wunderman-thompson/) ### 50% ### Productivity gain expondo raised productivity by **50%** and halved its outsourcing costs. - [Read their story](https://www.smartcat.com/cases/expondo/) ## More Tools in the Same Web App Open any of them from the same account. Your files and glossary come with you, in **280+ languages**. ### Video subtitle translator Caption a video online and re-time each line in the browser. ### AI video dubbing Generate a timed AI voice track without audio software. ### Training video creator Create a training video online with AI, then translate it. ### AI audio translator Upload an audio file and get a translated transcript or subtitles. ### Voice over translator Add translated narration on top of the original sound. ### AI voice dubbing Replace the speech with an AI voice in 35 voice locales. Open the App and Translate a Video Now Sign up in your browser, upload a video and get translated subtitles or a dubbed version without installing anything. Try it free with **15,000 Smartwords for 15 days**, no credit card needed. - [Start free trial](https://smartcat.com/sign-up?main-f-video-translation-app) ## Upload These Files Straight from Your Computer The app accepts **80+ file formats**, including these video, audio and subtitle files: ### MP4 Translator ### MP3 Translator ### MOV Translator ### SRT Translator ### VTT Translator ### WAV Translator Recorded on a phone or exported from an editor? MOV, MP4, M4V, 3GP and MKV files upload as they are, up to 6 GB each. WebM is not supported. See [the full format list](https://help.smartcat.com/supported-file-formats/). ## Translate Videos Online into Popular Languages Pick a language pair to get started: ### English to Spanish video translator ### English to French video translator ### English to German video translator ### English to Chinese video translator ### English to Japanese video translator ### What is the best video translation app? Look for an app that needs **no installation**, lets you edit subtitles against the video, offers AI voices, exports standard SRT or VTT files and lets others review in the same place. Smartcat suits teams translating video regularly. For a single personal clip, a simpler captioning tool may be enough. ### Is there a free video translation app? Smartcat has no free-forever plan. The free trial gives you **15,000 Smartwords for 15 days**, with no credit card and nothing to install. Sign up in the browser, upload a short video and take it all the way to a translated, downloadable file before you decide. ### How do I translate a video with an app? - Sign in to Smartcat in your browser. - Upload the video and confirm the source language. - Choose the target languages. - Review the AI subtitles in the online Subtitle Editor. - Add an AI voice if you need one, then download the result. ### How accurate is a video translation app? In 2026, **92% of words** translated by Smartcat AI for paying customers were accepted without a single human edit. The app shows every cue next to the video, so the remaining fixes, usually names, acronyms or lines that read too fast, are quick to spot and correct before download. ### Is a web-based video translation app safe to use? Smartcat is **SOC 2 Type II** compliant. Files are encrypted in transit and at rest, workspaces are isolated from other accounts, and role-based access controls who opens each project. On written request, your content is deleted or returned within 30 days. ### What are the alternatives to a video translation app? Desktop video software with manual subtitling, or an agency that returns files by email. Both take longer and keep work on one machine or in someone's inbox. One limit of a web app: files must be uploaded, up to **6 GB each**, and WebM is not supported, so convert or split very large files first. ### Do I need to download or install anything? No. Smartcat runs in a **web browser**. Uploading, transcription, the Subtitle Editor, AI voices and downloads all happen online. You only download the finished files: a video, a video with subtitles, or SRT and VTT subtitle files. That also means no version mismatch between teammates, because everyone works in the same app. ### Can I start a video on one computer and finish on another? Yes. Projects and files live in your **Smartcat account and Drive**, not on the computer you started on. Sign in from any computer with a browser and open the same project, with your subtitle edits, dubbed versions and exports intact. Nothing needs to be copied between machines. ### Can my team work in the app together? Yes. Invite colleagues, agencies or Marketplace linguists by **email or link**, and assign them review tasks in the same project. Plans include unlimited users, and admins control roles, so reviewers see the files they need and nothing else. Feedback lands on the exact cue, not in an email thread. ### Can I try AI voices without spending Smartwords? Yes. **Voice previews** in the Subtitle Editor do not consume Smartwords. Play a line in different voices, pick the one that fits, and only then generate the dub. Generating the full dub is metered at 10 Smartwords per source word. ### Can I translate a video recorded on my phone? Yes, as long as the file is in a supported format. Phone recordings are usually **MOV, MP4 or 3GP**, all of which Smartcat accepts. Upload the file like any other video. The 6 GB per-file limit applies, so very long 4K recordings may need splitting. ### How do I get the translated video out of the app? Click Download and choose **Video**, **Video with subtitles** or **Subtitles**, then the language version. A clean video plus an SRT or VTT file keeps captions switchable on YouTube, Vimeo or Wistia; the burned-in version suits platforms that ignore caption files. ### Does the app work with YouTube videos? It works with the video file, not a link. Upload the file you published, translate it, then add the **SRT or VTT** output to YouTube as a caption track. For a dubbed version, download the translated video and publish it as its own upload, or on a channel for that language. ## Video Translation App FAQ