Comment utiliser Synthesia étape par étape — Tutoriel 2026

Démarrage rapide

Ce guide couvre toutes les fonctionnalités de Synthesia :

• Commencer — Create your account and finish basic setup
• Comment utiliser les avatars IA — Pick from 150+ AI avatars or build a personal avatar of yourself
• Comment utiliser la synthèse vocale — Turn your script into natural AI voices across 120+ languages and accents
• Comment utiliser les modèles personnalisables — Start from 250+ pre-designed templates built for training and marketing
• Comment utiliser un éditeur vidéo IA — Edit scenes, timing and animations without touching a complicated timeline
• Comment utiliser la collaboration et le partage — Share projects, collect timestamped feedback and publish anywhere
• How to Use AI Video Assistant — Turn a topic, prompt or public URL into a finished video draft
• How to Use AI Screen Recorder — Record product walkthroughs and pair them with an AI presenter
• Comment utiliser la traduction en un clic — Dub finished videos into 30+ languages with lip-sync that stays frame-accurate
• Comment utiliser les vidéos interactives — Add clickable hotspots, quizzes and branching paths to passive training videos

Temps nécessaire : 5 minutes par fonctionnalité

Vous trouverez également dans ce guide : Conseils de pro | Erreurs courantes | Dépannage | Tarification | Alternatives

Pourquoi faire confiance à ce guide ?

I started making Synthesia videos months ago and have tested every feature here myself.

This tutorial comes from real projects, not vendor screenshots.

Synthesia is the Vidéo IA generator most companies land on first.

Mais la plupart des utilisateurs n'exploitent qu'une infime partie des possibilités de la plateforme.

Ce guide vous montre comment utiliser chaque fonctionnalité principale.

Étape par étape, avec captures d'écran et conseils de pro.

Tutoriel Synthesia

This How to Use Synthesia tutorial walks through the whole video creation process, from your first account to advanced tricks.

Synthesia

Turn plain texte into studio-quality videos with AI avatars and voiceovers in 140+ languages. No camera, no crew, no waiting on an edit. Start free with three minutes of video per month.

ESSAYEZ SYNTHESIA MAINTENANT →

LIRE L'ARTICLE COMPLET →

ALTERNATIVES À SYNTHESIA →

Premiers pas avec Synthesia

Avant de créer quoi que ce soit, terminez cette configuration unique.

Cela prend environ trois minutes.

Here is what my own first week looked like:

Passons maintenant en revue chaque étape.

Étape 1 : Créez votre compte

Go to the Synthesia website and click Get Started Free.

Saisissez votre adresse courriel professionnelle et créez un mot de passe.

✓ Point de contrôle: Vérifiez votre boîte de réception pour l'e-mail de confirmation.

Étape 2 : Ouvrez l’application Web

Synthesia runs in the browser, so there is nothing to install.

Log in and the dashboard loads with your recent projects and templates.

Voici à quoi cela ressemble :

✓ Point de contrôle: You should see the main dashboard and a New Video button.

Step 3: Finish Onboarding

Answer the short setup questions about your team and use case.

Synthesia uses those answers to surface relevant templates on your home page.

Upload your logo and brand colours if you are on a paid plan.

Comment utiliser les avatars de Synthesia AI

Avatars IA let you put a presenter on screen without hiring one.

Voici comment l'utiliser étape par étape.

Step 1: Open the Avatars Tab

Click Avatars in the left panel of the editor.

You get 150+ diverse AI avatars sorted by style, age and setting.

Step 2: Pick a Framing

Choose waist-up shots for intros and chest-up shots for detailed explanations.

Add gestures like head nods or raised eyebrows so the delivery feels less stiff.

Voici à quoi cela ressemble :

✓ Point de contrôle: The avatar preview sits on your canvas at the framing you chose.

Step 3: Save It to the Scene

Drag your chosen avatar onto the canvas and lock the position.

Repeat for the rest of your scenes to keep one presenter throughout.

Comment utiliser la synthèse vocale Synthesia

Synthèse vocale turns your script into speech using AI voix.

Voici comment l'utiliser étape par étape.

Étape 1 : Collez votre script

Drop your text into the script box under each scene.

Keep every scene focused on one idea so the AI reads it cleanly.

Étape 2 : Choisir une voix et une langue

The speech engine covers 120+ languages and accents.

Match the accent to your audience, not to your own.

Voici à quoi cela ressemble :

✓ Point de contrôle: Le voix name shows under each scene and captions appear in the preview.

Step 3: Add Pauses and Captions

Insert pause tags where you want breathing room in the narration.

Switch on closed captions so viewers can follow without sound.

Comment utiliser les modèles personnalisables de Synthesia

Modèles personnalisables save you from designing videos from scratch.

Voici comment l'utiliser étape par étape.

Étape 1 : Parcourir la bibliothèque

Open Templates from the dashboard and filter by use case.

There are 250+ pre-designed templates covering training, onboarding and marketing.

Step 2: Swap in Your Content

Replace the placeholder text, images and avatar with your own.

Keep a clear visual hierarchy in each scene so nothing feels crowded.

Voici à quoi cela ressemble :

✓ Point de contrôle: Your own text and images now sit inside the template layout.

Step 3: Save It as Your Own

Save the edited layout as a reusable template for your team.

Custom assets and brand kits keep every future video on brand.

Comment utiliser l'éditeur vidéo Synthesia AI

IA monteur vidéo handles scenes, timing and animations without a timeline.

Voici comment l'utiliser étape par étape.

Step 1: Arrange Your Scenes

Each scene is a card, much like a slide in PowerPoint.

That familiar layout is why most people learn the editor in an afternoon.

Step 2: Add Media and Animations

Upload images or clips, then set simple entrance animations.

Adjust background music so the sound never fights the voice.

Voici à quoi cela ressemble :

✓ Point de contrôle: Your media appears in the scene with the animation you picked.

Step 3: Preview Before You Generate

Hit play on the preview to check pacing and narration.

Fix anything odd, then click generate.

Comment utiliser Synthesia Collaboration et Partage

Collaboration et partage keeps review cycles inside the platform.

Voici comment l'utiliser étape par étape.

Step 1: Open a Space

Synthesia Spaces group your team’s projects in one shared place.

Invite reviewers by email and set edit or comment access.

Step 2: Collect Timestamped Feedback

Reviewers leave comments pinned to the exact second.

You resolve each note as you fix it, so nothing gets lost.

Voici à quoi cela ressemble :

✓ Point de contrôle: Comments appear in the side panel with a timestamp on each one.

Step 3: Share the Finished Video

Export an MP4 or generate share links for your audience.

Videos also push straight into most LMS apps.

Comment utiliser l'assistant vidéo IA de Synthesia

Vidéo IA Assistant builds a first draft from almost nothing.

Voici comment l'utiliser étape par étape.

Step 1: Give It a Starting Point

Enter a topic, a prompt or a public URL.

The assistant reads it and writes a scene-by-scene script.

Step 2: Review the Draft

Check the generated text against the FOCA framework: focus, outcome, content, action.

A strategic script drives roughly 80% of a video’s success.

Voici à quoi cela ressemble :

✓ Point de contrôle: A full scene list appears with a script written under each scene.

Step 3: Edit and Approve

Rewrite anything that sounds generic, then approve the draft.

The assistant fills each scene with an avatar, visuals and voice.

Comment utiliser l'enregistreur d'écran Synthesia AI

Enregistreur d'écran IA captures product walkthroughs inside Synthesia.

Voici comment l'utiliser étape par étape.

Step 1: Start a Recording

Click Record in the media panel and choose a tab or window.

No separate recording tool is needed.

Step 2: Trim the Capture

Cut dead air from the start and end of the clip.

Speed up slow sections so viewers stay with you.

Voici à quoi cela ressemble :

✓ Point de contrôle: The trimmed clip sits in your media library, ready to drop into a scene.

Step 3: Add a Presenter

Placez un Avatar IA beside the recording to narrate what happens.

Match the voice to the rest of your video series.

Comment utiliser la traduction en un clic de Synthesia

Traduction en un clic reaches global teams without re-recording anything.

Voici comment l'utiliser étape par étape.

Step 1: Open a Finished Video

Select any completed video from your project list.

Choose Translate from the options menu.

Étape 2 : Choisissez vos langues

AI Dubbing covers 30+ languages with frame-accurate lip-sync.

Select every market you need in one pass.

Voici à quoi cela ressemble :

✓ Point de contrôle: Each language appears as its own version inside your project list.

Step 3: Check Each Version

Watch a minute of each language before publishing.

Fix any term your glossary should have caught.

Comment utiliser les vidéos interactives Synthesia

Vidéos interactives turn passive watching into active learning.

Voici comment l'utiliser étape par étape.

Step 1: Enable Interactivity

Open the video settings and switch on interactive elements.

This works on training videos and product tours alike.

Step 2: Add Hotspots and Quizzes

Drop clickable hotspots on key parts of the screen.

Add a short quiz to test whether the message landed.

Voici à quoi cela ressemble :

✓ Point de contrôle: Hotspot and quiz markers show on the scene you edited.

Step 3: Set Branching Paths

Send viewers down different paths based on their answers.

New hires skip what they already know.

Conseils et astuces Synthesia Pro

After eight months of daily use, these are the tips I’d hand a new user.

Raccourcis clavier

Fonctionnalités cachées que la plupart des gens ignorent

• Académie Synthesia : free courses on localization and advanced production, with worked examples worth a deep dive.
• Kits de marque : lock fonts, colours and logo placement once so every video matches without manual checks.
• Pronunciation glossary: teach the AI how to say product names, then stop fixing the same word forever.

Synthesia : Erreurs courantes à éviter

Mistake #1: Writing the script last

Mistake #2: Cramming every scene

Mistake #3: Skipping the preview

Dépannage de Synthesia

Problem: Video generation is stuck

Cause: Long videos queue behind other jobs during busy hours.

Réparer: Generation normally takes 3 to 20 minutes depending on length. Close the tab and wait for the email. Split anything over 10 minutes into shorter videos.

Problem: The avatar mispronounces your brand name

Cause: The speech engine guesses unfamiliar words from spelling alone.

Réparer: Add the word to your pronunciation glossary with a phonetic spelling. Regenerate that scene only, not the whole video.

Problem: An uploaded clip won’t play

Cause: The file uses an unsupported codec or exceeds the upload limit.

Réparer: Re-export as an MP4 with H.264 video and AAC sound, then upload again. Keep single files under the plan limit shown on the upload page.

📌 Note: If none of these fix your issue, contact Synthesia support.

Qu'est-ce que Synthesia ?

Synthesia is an AI video generator that creates studio-quality videos from text.

Think of it as a film crew that lives in a browser tab.

You write, it casts an avatar, records the voice and edits the result.

Companies create videos this way for onboarding, product updates and customer service.

Every video created here can be updated later without re-recording anything.

Regardez ce bref aperçu :

Il comprend les fonctionnalités clés suivantes :

• Avatars IA : Pick from 150+ AI avatars or build a personal avatar of yourself
• Synthèse vocale : Turn your script into natural AI voices across 120+ languages and accents
• Modèles personnalisables : Start from 250+ pre-designed templates built for training and marketing
• Éditeur vidéo IA : Edit scenes, timing and animations without touching a complicated timeline
• Collaboration et partage : Share projects, collect timestamped feedback and publish anywhere
• Assistant vidéo IA : Turn a topic, prompt or public URL into a finished video draft
• Enregistreur d'écran IA : Record product walkthroughs and pair them with an AI presenter
• Traduction en 1 clic : Dub finished videos into 30+ languages with lip-sync that stays frame-accurate
• Vidéos interactives : Add clickable hotspots, quizzes and branching paths to passive training videos

Synthesia is built on AI ethics and sécurité. It is SOC 2 and GDPR compliant, and a Trust and Safety team reviews content with both human and AI moderation.

Non-consensual clones of celebrities or political figures are blocked, and explicit consent is required before any likeness is used.

The technology does not suit every job. High-impact présentations still need a real person on camera.

Pour une analyse complète, consultez notre Avis sur Synthesia.

Tarification de Synthesia

Voici le prix de Synthesia en 2026 :

Essai gratuit : Yes. A free plan gives you three minutes of video per month, six stock avatars and every AI voice.

Garantie de remboursement : No refund window is published, so test on the free plan first.

💰 Meilleur rapport qualité-prix : Creator — brand kits, more video minutes and the editing control most teams end up needing.

One note on cost: a custom AI avatar is $1,000 per year, more than the subscription itself. Most businesses still come out ahead against filmed production.

Synthesia contre les alternatives

Comment Synthesia se compare-t-elle ? Voici le contexte concurrentiel :

Sélection rapide :

• Meilleur résultat global : Synthesia — the widest language support and the cleanest editing experience.
• Meilleur budget : Vidnoz — free daily credits let you learn AI video at no cost.
• Idéal pour les débutants : Dans la vidéo — prompt-to-video with stock footage and no avatar setup.
• Idéal pour les vidéos de formation : Colossyan — branching scenarios built for learning teams.

🎯 Alternatives à Synthesia

Vous cherchez des alternatives à Synthesia ? Voici les meilleures options :

• 🚀 HeyGen : Faster avatar video generation with sharper lip-sync. Better for short social clips than long internal training modules.
• 🧠 Colossyan : Built for learning teams. Branching scenarios and two-avatar conversations make compliance training feel less flat.
• 🎨 Veed : A browser video editor first, AI avatars second. Best if you also cut real footage and add subtitles.
• ⚡ Elai : Turns slide decks and blog links into narrated videos quickly. Light interface with a small learning curve.
• 💰 Vidnoz : The cheapest way to test AI video. Daily free credits, though the avatars look noticeably less polished.
• 🔒 Cerveau profond : Enterprise avatars with tight security controls. Popular with news desks and finance teams.
• 🎯 Synthesys: Wide AI voice library with commercial rights included. Strong for voiceovers on existing footage.
• 🏢 Première heure: Studio-quality presenters aimed at corporate communications teams producing videos at scale.
• 🔧 A FAIT: Developer-friendly API that animates a single photo into a talking head. Good for personalised sensibilisation.
• ⭐ Virbo: Wondershare’s lightweight avatar tool. Aimed at e-commerce clips and quick product explainers.
• 📊 Vidyard: Video hosting and sales outreach with analytics, plus AI avatars for prospecting messages.
• 💼 Fliki: Text-to-video with strong AI voices. Turns blog posts and scripts into narrated clips fast.
• 🔥 Discourir: Voice-first tool for turning text into speech. Useful when you only need narration, not video.
• 👶 Dans la vidéo : Prompt-to-video using stock footage instead of avatars. Friendly for beginners making marketing videos.
• 🌟 Créativité: Ad-focused generator that spins product ad variations straight from a store URL.
• 🎬 IA de sous-titrage: Mobile-first editing and AI presenters. Great for creators working entirely from a phone.

Pour la liste complète, consultez notre Alternatives à Synthesia guide.

⚔️ Synthesia comparé

Voici comment Synthesia se compare à chacun de ses concurrents :

• Synthesia contre HeyGen: HeyGen wins on avatar realism and speed. Synthesia wins on team controls, translation depth and enterprise security.
• Synthesia contre Colossyan: Colossyan has richer scenario branching. Synthesia has more avatars, more languages and a far bigger template library.
• Synthesia contre Veed: Veed is better for editing filmed video. Synthesia is better when the avatar is the whole video.
• Synthesia contre Elai: Elai converts decks faster. Synthesia produces cleaner output and gives you far more voice and avatar control.
• Synthesia contre Vidnoz: Vidnoz costs less on paper. Synthesia looks professional enough to put in front of customers and new hires.
• Synthesia contre Deepbrain: Deepbrain matches Synthesia on security. Synthesia is easier to learn and ships new features much faster.
• Synthesia vs Synthesys: Synthesys is voice-led. Synthesia gives you the full video creation process, not just the speech layer.
• Synthesia contre Hour One: Hour One has polished presenters. Synthesia has better editing, translation and collaboration for everyday projects.
• Synthesia vs D-ID: D-ID is an API play. Synthesia is a full platform your non-technical teammates can actually use.
• Synthesia contre Virbo: Virbo is cheaper and simpler. Synthesia handles long-form training videos that Virbo was never built for.
• Synthesia contre Vidyard: Vidyard wins on hosting and tracking. Synthesia wins on the actual video generation quality.
• Synthesia contre Fliki: Fliki is cheaper for stock-footage videos. Synthesia is the pick when you need a human presenter.
• Synthesia contre Speechify: Speechify only handles voice. Synthesia adds avatars, scenes, captions and translation on top of that.
• Synthesia contre InVideo: InVideo suits ads and social. Synthesia suits training videos where a presenter explains something on camera.
• Synthesia vs Creatify: Creatify is built for paid ads. Synthesia is built for internal communications, onboarding and customer education.
• Synthesia contre Captions AI : Captions AI is made for a YouTube channel workflow. Synthesia is made for companies training staff.

Commencez à utiliser Synthesia dès maintenant

Vous avez appris à utiliser toutes les principales fonctionnalités de Synthesia :

• ✅ Avatars IA
• ✅ Synthèse vocale
• ✅ Modèles personnalisables
• ✅ Éditeur vidéo IA
• ✅ Collaboration et partage
• ✅ Assistant vidéo IA
• ✅ Enregistreur d'écran IA
• ✅ Traduction en 1 clic
• ✅ Vidéos interactives

Étape suivante : Choisissez une fonctionnalité et essayez-la dès maintenant.

La plupart des gens commencent par des avatars IA.

Cela prend moins de cinq minutes.

Foire aux questions

Comment utilise-t-on Synthesia ?

Create a free account, pick a template, paste your script, choose an AI avatar and voice, then click generate. Your video renders in a few minutes.

Comment utiliser Synthesia AI gratuitement ?

The free plan gives you three minutes of video per month, six stock avatars and the full range of AI voices. No card is needed to test it.

How do I put a song into Synthesia?

Que question usually means the piano app, not the AI video generator. In Synthesia AI you add background music from the media panel inside the editor.

Comment ajouter une vidéo à Synthesia ?

Open a scene, click Upload in the media library, then drop in your MP4. You can also record clips directly with the built-in AI screen recorder.

Comment fonctionne l'IA de Synthesia ?

You write text, Synthesia turns it into speech with AI voices, then animates a chosen avatar to match. Scenes, animations and captions are added in the editor.