Synthesia 使用指南（2026 年版）

快速入门

本指南涵盖了 Synthesia 的所有功能：

• 入门 — 创建您的帐户并设置您的工作区
• 如何使用AI虚拟形象 — Pick from 150+ diverse presenters for any video
• 如何使用文本转语音功能 — Turn scripts into natural AI voices in 120+ languages
• 如何使用可自定义模板 — Build polished videos fast with 250+ ready-made layouts
• 如何使用AI视频编辑器 — Edit, refine, and publish your video from one dashboard
• 如何使用AI视频助手 — Generate a full video draft from a single prompt or URL
• 如何使用协作和共享功能 — Collect team feedback with timestamped comments
• 如何使用AI屏幕录制器 — Capture product walkthroughs without extra software
• 如何使用一键翻译 — Translate your video into 30+ languages with lip-sync
• 如何使用互动视频 — Add quizzes, hotspots, and branching paths to any video

所需时间： 每部影片 5 分钟

本指南还包含以下内容： 专业提示 | 常见错误 | 故障排除 | 定价 | 替代方案

为什么信任本指南

I’ve used Synthesia for several months and tested every feature covered here.

This how to Use Synthesia tutorial comes from real hands-on experience — not marketing copy or vendor screenshots.

Synthesia is one of the most powerful AI video 发电机 今天即可购买。

It lets you create videos with studio-quality production — training content, onboarding materials, and internal communications — no camera or recording studio needed.

Most users only scratch the surface of what the platform can do.

This guide shows you how to use every major feature — step by step, with pro tips.

Synthesia教程

This complete Synthesia tutorial walks you through every feature, from initial setup to advanced techniques that make you a power user of 人工智能视频 创建。

Synthesia 入门指南

Before diving into video creation, complete this one-time setup.

大约需要3分钟。

请先观看这段简短的概述：

现在让我们一步一步来。

第一步：创建您的帐户

前往 synthesia.io and click “Get started for free.”

输入您的工作邮箱并创建密码。

Synthesia offers a free plan — no credit card required to start.

✓ 检查点： 检查你的 收件箱 请查收确认邮件并验证您的地址。

步骤二：访问平台

Synthesia is fully web-based — no download or app install needed.

Log in at synthesia.io and you’ll land on your video dashboard.

The interface feels familiar — it resembles building a PowerPoint presentation, with scenes instead of slides.

这就是仪表盘的样子：

✓ 检查点： You should see the main workspace with a “New Video” button at the top.

步骤 3：完成初始设置

Click your profile icon and set your preferred language and workspace name.

If you’re on a paid plan, upload your brand kit — logo, colors, and fonts — for brand consistency across every video.

Explore Synthesia Academy (free inside the platform) to take courses on localization and advanced production techniques.

如何使用 Synthesia AI 头像

AI化身 let you pick a realistic human presenter from 150+ diverse options — no camera, actor, or studio required.

以下是使用步骤。

观看人工智能化身实际演示：

现在让我们逐一分析每个步骤。

Step 1: Open a New Video and Choose Your Avatar

Click “New Video” from your dashboard and select “Blank” or choose a template.

点击 头像 panel on the left side of the editor.

Browse over 150 AI avatars — filter by gender, age, style, or language preference.

Step 2: Select and Position Your Avatar

Click any avatar to preview it — you’ll see a short sample clip of how it looks and sounds.

Choose a waist-up format for intro scenes and a chest-up format for detailed explanations.

这就是头像选择界面的样子：

✓ 检查点： Your chosen avatar appears on the video canvas, ready for scripting.

Step 3: Add Gestures and Finalize

Click the avatar on canvas and open the gesture panel.

Add gestures like head nods or raised eyebrows to make the AI presenter feel more natural and engaging.

You can also create a personal avatar — a digital representation of yourself — using Synthesia’s custom avatar feature (available on paid plans).

如何使用 Synthesia 文本转语音

文本转语音 lets you turn any script into natural AI 声音 in over 120 languages and accents — no recording, no microphone, no waiting.

以下是使用步骤。

观看文本转语音功能演示：

现在让我们逐一分析每个步骤。

步骤 1：输入或粘贴您的脚本

Click the script panel in your scene editor.

Type or paste your text — the AI 嗓音 will read exactly what you write.

Keep your script concise and focused on one topic per scene for the best result.

Remember: a strategic script determines about 80% of a video’s overall success.

Step 2: Choose Your Voice and Language

Click the voice selector above the script box.

浏览人工智能 voices by language, accent, and tone — Synthesia supports over 120 languages and accents.

这就是语音选择面板的样子：

✓ 检查点： Click “Preview” to hear the voice read your script before generating the full video.

Step 3: Add Pauses and Closed Captions

Insert pause tags in your script (e.g., [pause]) to control speech timing and pacing.

Enable closed 图片说明 from the “Accessibility” tab — this is critical for corporate video-making and compliance.

Adjust the voice speed using the speech rate slider for a more natural delivery.

如何使用 Synthesia 自定义模板

可自定义模板 let you launch any video in seconds using 250+ pre-designed layouts built for training, marketing, and onboarding.

以下是使用步骤。

观看可自定义模板的实际应用：

现在让我们逐一分析每个步骤。

步骤 1：浏览模板库

From your dashboard, click “New Video” then select “Templates.”

Browse over 250 pre-designed templates filtered by use case — training videos, product demos, onboarding, and more.

Click any template to preview it before committing.

Step 2: Apply Your Brand Kit

Click “Use Template” and then open the “Brand Kit” panel on the right side.

Apply your logo, brand colors, and fonts to every scene at once.

Here’s what the template editor looks like after applying a brand kit:

The brand kit panel applies your logo, colors, and fonts across every scene simultaneously — the template updates live as you make changes.

✓ 检查点： All scenes should now reflect your brand colors and logo — consistent across the entire video.

Step 3: Replace Text and Media

Click each 文本 block and replace the placeholder copy with your actual script.

Upload your own images or choose from Synthesia’s built-in media library.

Maintain visual hierarchy in each scene — avoid cramming too much information onto one slide.

How to Use the Synthesia AI Video Editor

人工智能 视频编辑器 lets you edit, arrange, and publish your Synthesia videos from one clean drag-and-drop workspace.

以下是使用步骤。

观看AI视频编辑器实际演示：

现在让我们逐一分析每个步骤。

Step 1: Open the Editor and Arrange Scenes

Open any video project and click the scene timeline at the bottom of the screen.

Drag and drop scenes to reorder them — the process feels fast and intuitive.

Add new scenes by clicking the “+” button between any two existing scenes.

Step 2: Edit Text, Animations, and Media

Click any element on the canvas to select and edit it — text blocks, images, shapes, and animations are all editable.

Use the animations panel to add entrance and exit effects to any on-screen element.

Here’s what the editing canvas looks like with an active scene:

The canvas shows your active scene with avatar, script, and media all visible in one clean workspace.

✓ 检查点： Each scene shows the avatar, script text, and all media elements in place.

步骤 3：预览和生成

Click “Preview” in the top right to watch your video before committing to a full generate.

Check animations, narration sync, and readability across all scenes.

When ready, click “Generate” — the video generation process typically takes 3 to 20 minutes depending on video length.

How to Use the Synthesia AI Video Assistant

人工智能视频 助手 lets you generate a complete video draft from a single topic, prompt, or public URL — no scripting required.

以下是使用步骤。

观看人工智能视频助手演示：

现在让我们逐一分析每个步骤。

步骤 1：启动 AI 视频助手

From your dashboard, click “New Video” then choose “AI Video Assistant.”

You’ll see three input options: a topic, a written prompt, or a public URL such as a webpage or document link.

Step 2: Input Your Topic or URL and Configure

Type a topic like “employee onboarding safety training” or paste a public URL with source content.

Choose your preferred language, video length, tone, and avatar before clicking “Generate draft.”

以下是AI视频助手的输入界面：

The assistant shows a clean form with fields for your topic, preferred language, video length, tone, and avatar selection.

✓ 检查点： The assistant produces a multi-scene draft with a script, avatar, and layout in under a minute.

Step 3: Review, Edit, and Generate

Review the auto-generated script scene by scene — edit any text that doesn’t match your tone or facts.

Swap the avatar, adjust the voice, and update any images before clicking “Generate.”

The AI Video Assistant is a starting point — always review the draft for accuracy before publishing.

如何使用 Synthesia 协作和共享功能

协作与共享 lets you invite teammates, gather feedback with timestamped comments, and manage video approvals — all inside Synthesia Spaces.

以下是使用步骤。

观看协作与共享的实际应用：

现在让我们逐一分析每个步骤。

第一步：创建共享空间

Click “Spaces” in the left sidebar and select “New Space.”

Name it by project or team — for example, “HR Onboarding Videos” or “Product Training.”

Invite teammates by email from the Space settings panel.

Step 2: Share a Video for Feedback

Open a video inside your Space and click “Share for Review.”

Team members can watch the video and leave timestamped comments tied to specific moments in the footage.

Here’s what the Synthesia Spaces collaboration view looks like:

The Spaces view shows all team videos in a shared folder with comment indicators on the timeline for each reviewed clip.

✓ 检查点： You’ll see all feedback comments on a shared timeline — no more collecting notes from emails or chat threads.

Step 3: Manage Feedback and Publish

Review each comment and click “Resolve” once you’ve made the edit.

Once all feedback is addressed, click “Approve” to mark the video ready for publish.

Export the final video or copy the shareable link for your LMS, intranet, or YouTube channel.

How to Use the Synthesia AI Screen Recorder

The AI Screen Recorder lets you capture product walkthroughs, software demos, and how-to recordings directly inside Synthesia — no third-party recording tool needed.

以下是使用步骤。

Watch the AI Screen Recorder in action:

现在让我们逐一分析每个步骤。

Step 1: Start a New Screen Recording

From the Synthesia editor, click “Insert” then select “Screen Recording.”

A browser prompt will ask for permission to record your screen — click “Allow.”

Choose to record your full screen, a specific window, or a browser tab.

步骤 2：录制您的演示

Click “Start Recording” and walk through the process you want to teach.

Speak naturally — the screen recording captures your audio and screen activity simultaneously.

Here’s what the screen recording tool looks like inside the editor:

The recording controls appear as a floating toolbar at the bottom of your screen — showing a timer, pause button, and stop button.

✓ 检查点： When you stop recording, Synthesia imports the clip directly into your video scene.

Step 3: Trim and Add an Avatar Overlay

Use the editor’s trim tool to cut any extra footage from the start or end of the recording.

Add an 人工智能化身 overlay in the corner of the screen recording to narrate the walkthrough in any language.

This combination — screen recording plus avatar — is one of the most effective formats for training videos and product demos.

如何使用 Synthesia 一键翻译

一键翻译 — also called AI Dubbing — lets you translate any Synthesia video into 30+ languages with frame-accurate lip-sync, without re-recording a single scene.

以下是使用步骤。

观看一键翻译演示：

现在让我们逐一分析每个步骤。

步骤 1：打开已完成的视频

Open any generated video in your Synthesia dashboard.

Click the “Translate” button in the top toolbar — it’s available on Creator and Enterprise plans.

步骤二：选择目标语言

Choose one or multiple target languages from the dropdown — Synthesia supports over 30 languages for AI dubbing.

Synthesia will automatically translate the script, match the AI voice, and sync lip movements to the new language.

Here’s what the translation selection panel looks like:

The language selection screen shows a dropdown with 30+ target languages — you can select multiple languages to generate all translated versions at once.

✓ 检查点： Each selected language appears as a separate video version in your project folder.

Step 3: Review and Publish Each Version

Preview each translated video to check for accuracy and natural pacing.

Edit any mistranslated lines directly in the script panel before generating the final version.

Companies like Heineken use this feature to train thousands of employees across multiple countries — all from a single source video.

如何使用 Synthesia 交互式视频

互动视频 let you add clickable hotspots, quizzes, and branching paths to your Synthesia videos — turning passive viewing into active learning.

以下是使用步骤。

观看互动视频的实际演示：

现在让我们逐一分析每个步骤。

Step 1: Open a Video and Enable Interactivity

Open any generated video in your Synthesia editor.

Click the “Interactive” tab in the left panel to switch into interactive editing mode.

Step 2: Add Hotspots, Quizzes, or Branching Paths

Click “Add Element” and choose from hotspots (clickable overlays), quiz questions, or branching decision points.

Set branching logic — for example, “if the viewer answers correctly, go to Scene 5; if wrong, replay Scene 3.”

Here’s what the interactive layer editor looks like:

The interactive layer editor shows branching arrows between scenes and overlay placement zones on the canvas.

✓ 检查点： Your video now shows interactive overlay elements on the canvas timeline.

步骤三：测试和发布

Click “Preview Interactive” to experience the video as a viewer would — test every branch and quiz path.

Publish the interactive video and share it via a link or embed it directly into your LMS.

Interactive videos are especially powerful for compliance training and onboarding — they verify that viewers actually engage with the content, not just play it.

Synthesia 专业技巧和快捷键

After testing Synthesia for several months, here are my best tips for faster and better video creation.

键盘快捷键

行动	捷径
Duplicate current scene	Ctrl + D (Windows) / Cmd + D (苹果)
撤销上一步操作	Ctrl + Z / Cmd + Z
Preview video from current scene	空格键
Select all elements on canvas	Ctrl + A / Cmd + A
Add a new scene	Ctrl + Enter / Cmd + Enter

大多数人错过的隐藏功能

• Synthesia Academy: Free courses built into the platform covering localization, advanced video production, and script writing — find it under your profile menu.
• 自定义头像创建： You can create a personal avatar — a digital version of yourself — by submitting a short video recording through the avatar consent portal; this is available on paid plans and costs $1,000/year as an add-on.
• Reusable Brand Assets: Save your edited scenes as “Custom Templates” — reuse them across future videos so every new project starts with your brand fonts, colors, and layout already in place.
• LMS直接集成： Synthesia connects directly to popular Learning Management Systems — publish your training videos straight to your LMS without downloading and re-uploading files.

Synthesia 常见错误及避免方法

Mistake #1: Generating Without Previewing First

Mistake #2: Ignoring the Script Quality

Mistake #3: Using Synthesia for Every Video Type

Synthesia故障排除

Problem: Video Generation Is Taking Too Long

原因： Video generation time scales with video length — a 10-minute video can take 20 minutes or more to process.

使固定： Submit your video for generation and close the browser tab — Synthesia processes in the background. You’ll receive an email notification when it’s done. Avoid submitting multiple long videos at the same time on the Starter plan.

问题：阿凡达角色口型同步看起来不自然

原因： Unusual punctuation, special characters, or very long sentences in the script can throw off the AI voice timing and lip-sync quality.

使固定： Break long sentences into shorter ones and remove any special characters from the script. Use the built-in pause tags to add natural breathing room between sentences. Preview the voice track before generating to catch timing issues 早期的.

Problem: 1-Click Translation Sounds Unnatural

原因： Idiomatic phrases, slang, or highly technical terms in the source script often translate literally and sound awkward in the target language.

使固定： After translation, open each scene’s script and manually edit any lines that sound stiff or unnatural. Use the voice preview to test the translated audio before generating the final video. For critical markets, have a native speaker do a final review of the translated script.

📌 笔记： If none of these fix your issue, contact Synthesia support via the in-app chat or visit synthesia.io/help.

Synthesia是什么？

Synthesia 是一个 AI视频生成器 that lets you create studio-quality videos with realistic AI avatars and voiceovers — no camera, crew, or editing experience required.

Think of it like building a PowerPoint presentation, except every slide becomes a video scene narrated by a realistic AI presenter in any language you choose.

观看这段快速概览：

Synthesia is most often used by companies for employee training, onboarding, and internal communications — it’s how organizations like Heineken trained thousands of employees at scale without expensive re-recording sessions.

The platform is built on the foundations of AI ethics and 安全 — it is SOC 2 and GDPR compliant, requires explicit consent before creating any personal avatar, and prohibits the creation of non-consensual clones of real people including celebrities or political figures.

它包含以下主要特点：

• 人工智能化身： Choose from 150+ diverse AI presenters or create a custom avatar of yourself for personalized video creation.
• 文本转语音： Convert any script into natural AI voices in 120+ languages and accents with support for pauses and closed captions.
• 可自定义模板： Access 250+ pre-designed templates for training, marketing, onboarding, and more — apply your brand kit in one click.
• AI视频编辑器： Drag-and-drop scene editing with animations, media management, and one-click preview before video generation.
• AI Video Assistant: Auto-generate a complete multi-scene video draft from a topic, prompt, or public URL in under a minute.
• 协作与分享： Invite teammates, collect timestamped feedback, and manage approvals inside Synthesia Spaces.
• AI屏幕录制器： Record product walkthroughs and how-to videos directly inside Synthesia without third-party apps.
• 一键翻译： AI Dubbing automatically translates your video into 30+ languages with frame-accurate lip-sync.
• 互动视频： Add quizzes, hotspots, and branching paths to transform passive viewers into active learners.

如需完整评测，请参阅我们的 Synthesia 综述.

Synthesia 定价

以下是 Synthesia 在 2026 年的预计价格：

计划	价格	最适合
自由的	每月 0 美元	Individuals wanting to test Synthesia AI with 3 minutes of video and 6 stock avatars per month
起动机	每月18美元	自由职业者 and small teams creating up to 10 minutes of video per month
创作者	每月 64 美元	Creators and content teams needing 30 minutes of video plus 1-Click Translation and brand kits
企业	定制定价	Large organizations needing custom AI avatars, SSO, LMS integrations, and dedicated support

免费方案： Yes — 3 minutes of video per month, 6 stock avatars, and a full range of AI voices. No credit card required.

退款保证： Synthesia does not publicly advertise a money-back guarantee — test with the free plan before upgrading.

💰 性价比最高： Creator at $64/month — it unlocks 30 minutes of video per month, 1-Click Translation into 30+ languages, custom brand kits, and advanced editing features that make it the right tier for teams producing training videos at scale.

Synthesia 与替代方案

How does Synthesia compare? Here’s a look at the competitive landscape for AI视频生成器:

工具	最适合	价格	等级
Synthesia	Enterprise training & onboarding videos	每月18美元起	⭐ 4.6
HeyGen	Marketing and personalized video at scale	每月 29 美元起	⭐ 4.7
科洛西恩	Corporate L&D and compliance training	每月27美元起	⭐ 4.4
维德	社交媒体 video editing and subtitles	每月18美元起	⭐ 4.4
埃莱	News-style AI presenter videos	每月23美元起	⭐ 4.3
Vidnoz	Free AI video creation for beginners	Free / From $29/mo	⭐ 4.3
深脑	Kiosk and interactive AI avatar experiences	每月30美元起	⭐ 4.3
Synthesys	Voiceover-heavy AI video production	每月35美元起	⭐ 4.2
做过	Talking photo and document-based videos	From $5.9/mo	⭐ 4.2
视频内	YouTube channel and social content 自动化	From $25/mo	⭐ 4.4

快速精选：

• 综合最佳： Synthesia — deepest feature set for enterprise training, LMS integration, and multilingual video at scale.
• 最佳预算： D-ID — starts at under $6/month for basic talking avatar videos with minimal setup.
• 最适合初学者： Vidnoz — free plan available, simple interface, no learning curve for first-time AI video creators.
• Best for marketing videos: HeyGen — personalized video campaigns and fast avatar generation for sales and marketing teams.

🎯 Synthesia 的替代品

Looking for Synthesia alternatives? Here are all the top options worth considering:

• 🚀 HeyGen： The closest rival to Synthesia — outstanding for personalized marketing videos, fast avatar generation, and AI dubbing for YouTube channel creators.
• 💼 科洛西人： Built specifically for corporate L&D teams — strong compliance training features and scenario-based video branching.
• 🎨 维德： Best for social media creators who need fast AI video editing, auto-subtitles, and screen recording in one browser-based tool.
• ⚡ 埃莱： Quick AI presenter video creation with a library of news-anchor style avatars — good for news-style internal updates.
• 💰 Vidnoz： Generous free plan with AI avatars and voiceovers — a solid starting point for individuals on a tight budget who want to create AI videos for free.
• 🏢 深脑： Focuses on interactive kiosk-style AI avatars for retail, banking, and in-person customer experience applications.
• 🎙️ Synthesys： Voiceover-first AI video platform — better choice if you need ultra-realistic AI voices and audio quality over visual avatar quality.
• ⭐ 第一小时: Enterprise-grade AI video platform with a focus on professional-looking avatars for corporate communications.
• 🔧 做过： Turn any photo into a talking AI avatar — the most affordable entry point for basic AI presenter videos starting at under $6/month.
• 🌟 处女座: Wondershare’s AI video generator — good all-rounder for beginners needing avatars, voiceovers, and basic editing in one tool.
• 📹 维迪亚德: Best for B2B sales video — personalized video prospecting and analytics rather than avatar-based training content.
• 🎵 弗利基: Text-to-video tool focused on turning blog posts and scripts into social media videos with AI voices and stock footage.
• 📖 Speechify： Primarily a text-to-speech and audiobook platform — use it when you need high-quality AI voiceovers without full video production.
• 🎬 视频内： Great for YouTube channel 自动化 — AI-powered script-to-video with stock footage, voiceovers, and social media templates.
• 🔥 创造: Focused on short-form ad creatives — fast AI video generation for product marketing and paid social campaigns.
• 🎯 字幕AI： Mobile-first AI video editor with auto-captions, eye-contact correction, and short-form video creation for social media creators.

完整列表请参见我们的 Synthesia 的替代方案 指导。

⚔️ Synthesia 对比

以下是 Synthesia 与各竞争对手的对比：

• Synthesia 与 HeyGen: HeyGen edges ahead for marketing and personalized outreach video; Synthesia wins for enterprise training, LMS integration, and interactive video branching.
• Synthesia 与 Colossyan: Both target corporate L&D — Synthesia has a larger avatar library and more templates; Colossyan has slightly stronger scenario-based branching for compliance training.
• Synthesia 与 Veed: Veed is better for social media editing and subtitle automation; Synthesia is the clear choice for formal training videos with AI avatars and voiceovers.
• Synthesia 与 Elai: Synthesia offers more avatar variety, better translation, and a more mature platform; Elai is a lighter-weight option for simpler AI presenter clips.
• Synthesia 与 Vidnoz: Vidnoz is the better free option for casual use; Synthesia is far more capable for professional training video creation at scale.
• Synthesia 与 Deepbrain: Deepbrain focuses on kiosk and real-time AI avatar experiences; Synthesia is better for asynchronous training and on-demand video content.
• Synthesia 与 Synthesys: Synthesys leads on raw voice quality for voiceover work; Synthesia wins on full video creation with avatars, templates, and interactive features.
• Synthesia 与第一小时: Both are enterprise-focused — Synthesia has better template variety and a more active product roadmap; Hour One suits teams already committed to their existing platform.
• Synthesia 与 D-ID: D-ID is far cheaper for basic talking avatar videos; Synthesia is the right choice once you need templates, translation, LMS integration, and team collaboration.
• Synthesia 与 Virbo: Virbo is a good beginner tool from Wondershare; Synthesia offers a more professional output quality and enterprise-grade security and compliance.
• Synthesia 与 Vidyard: These tools serve different purposes — Vidyard is for B2B sales video prospecting; Synthesia is for creating training and onboarding content at scale.
• Synthesia 对比 Fliki: Fliki turns blog content into social media clips quickly; Synthesia produces more polished, professional AI avatar videos suited for corporate use.
• Synthesia 与 Speechify: Speechify is primarily a text-to-speech and reading tool; Synthesia is a full video production platform for companies that need visual AI presenters.
• Synthesia 与 InVideo 的对比: InVideo excels for YouTube channel automation with stock footage; Synthesia is the better choice when you need AI avatars, training content, and multilingual delivery.
• Synthesia 与 Creatify: Creatify is purpose-built for short ad creatives; Synthesia handles long-form training and onboarding videos that Creatify isn’t designed for.
• Synthesia 与 Captions AI 的比较: Captions AI is a mobile tool for short-form social content; Synthesia is a desktop-first platform for professional corporate video creation.

立即开始使用 Synthesia

You now know how to use every major Synthesia feature:

• ✅ AI 化身
• ✅ 文本转语音
• ✅ 可自定义模板
• ✅ AI视频编辑器
• ✅ AI视频助手
• ✅ 协作与分享
• ✅ AI屏幕录制器
• ✅ 一键翻译
• ✅ 互动视频

下一步： 选择一项功能，立即试用。

Most people start with AI Avatars — choose a presenter, type a short script, and hit generate.

It takes less than 5 minutes to create your first video.

常见问题解答

Synthesia 是如何使用的？

To use Synthesia, sign up for a free account at synthesia.io, click “New Video,” and choose a template or start from scratch. Select an AI avatar, type your script into the text panel, choose an AI voice, and click “Generate.” The video generation process takes 3–20 minutes depending on length. Once done, download your video or share it directly via link or LMS integration.

如何免费使用 Synthesia AI？

Synthesia offers a free plan that allows you to create 3 minutes of video per month with 6 stock avatars and a full range of AI voices — no credit card required. Go to synthesia.io, click “Get started for free,” and create your account. The free plan is a great way to test the video creation process and learn the platform before upgrading to the Starter plan at $18/month.

如何在 Synthesia 中添加视频？

You can upload video files directly into the Synthesia editor by clicking “Media” in the left panel and selecting “Upload.” Supported formats include MP4 and MOV. Once uploaded, drag the clip onto any scene canvas and resize or position it as needed. You can also record new footage directly inside Synthesia using the built-in AI Screen Recorder without leaving the platform.

Synthesia AI 的工作原理是什么？

Synthesia AI works by combining a text-to-speech engine with a neural rendering system that animates a digital avatar to match your spoken script. You type a script, select an AI avatar and voice, and the platform generates a video where the avatar’s lip movements, facial expressions, and gestures are synchronized to the audio. The entire video generation process happens in the cloud — no recording equipment or video editing software needed.

Synthesia AI是免费的还是付费的？

Synthesia offers both free and paid plans. The free plan gives you 3 minutes of video per month with 6 avatars — enough to test the platform and learn the video creation process. Paid plans start at $18/month (Starter) for 10 minutes of video, going up to $64/month (Creator) for 30 minutes 加上人工智能 Dubbing and brand kits. Enterprise plans with custom AI avatars and LMS integration are available at custom pricing.

Synthesia AI 有什么用途？

Synthesia is most commonly used for employee training videos, onboarding materials, product walkthroughs, and internal communications. Companies use it to create scalable training content that can be quickly updated and translated without re-recording. It is also used for customer service explainer videos, YouTube channel content, marketing demos, and compliance training — anywhere consistent, multilingual video content is needed at scale.

Synthesia AI 使用安全吗？

Yes — Synthesia is SOC 2 and GDPR compliant, and the platform is built on a foundation of AI ethics and security. It has a dedicated Trust & Safety team, employs both human and AI content moderation, and strictly prohibits the creation of non-consensual clones or deepfakes of real people. Explicit consent is required before any personal likeness can be used to create a custom avatar. Synthesia also screens new users and vets content to prevent misuse and the spread of misinformation.

你可以将视频上传到 Synthesia 吗？

Yes, you can upload video files to Synthesia via the Media panel in the editor. Once uploaded, your video clip can be added to any scene and combined with AI avatars, voiceovers, and text overlays. Synthesia also has a built-in AI Screen Recorder that lets you record and add screen capture footage directly within the platform — useful for product walkthroughs and software training videos.

Synthesia 有哪些缺点？

Synthesia’s main limitations include a monthly video minute cap even on paid plans, which can become restrictive for high-volume content teams. Custom AI avatars — personal digital clones — cost $1,000/year on top of the subscription fee. The technology is not ideal for high-impact presentations where real human delivery and emotional connection matter to the audience. Some translated scripts also require manual editing to sound natural, which adds time to the video creation process for multilingual projects.

Synthesia 是否有免费的替代方案？

Yes — several free AI video generators exist. Vidnoz offers a free plan with AI avatars and voiceovers with no credit card required. D-ID has a free tier for basic talking avatar videos. Veed also provides a free plan with basic video editing and subtitles. For YouTube channel content and social media clips, InVideo and Fliki both offer free tiers. That said, Synthesia’s free plan (3 minutes/month) is itself a strong option for testing AI video creation without any financial commitment.