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Sample video
Anomaly Detection in Rotating Machinery Using Self-Supervised Learning
A university research presentation turned into a narrated video for academic sharing.
Voice: ElevenLabs Eleven v3 / George
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Comparison
Published: ·Updated: Presentation Video Tools Compared: Synthesia, HeyGen, and SpeechSlide AI
Compare Synthesia, HeyGen, SpeechSlide AI, and other video tools on PowerPoint imports, AI scripting, avatars, and pricing for presentations and explanations.
#Slide video#Tool comparison#Presentations
SpeechSlide AI Editorial
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AI can help turn presentation slides and product explanations into videos by generating scripts and narration. Services differ in slide imports, avatars, editing tools, and pricing.
This guide focuses on Synthesia, HeyGen, and SpeechSlide AI, with Google Vids and Narakeet as additional options. Compare the features you need for the video you want to make.
Start with the video you want to make
Do you want a visible presenter, or an explanation built around slides and charts? Your choice affects the editing features you need. Examples of conference talks, lessons, training, and sales presentations can help you picture the result.
Compare the main options
| Service | Work to evaluate | Conditions to check |
|---|---|---|
| Synthesia | Avatar-led explanations and multilingual business videos | Video minutes, credits, and plan-specific avatar and editing features |
| HeyGen | Presenter videos, translation, and PPT/PDF conversion | Credit use, generation mode, and per-video limits |
| Google Vids | Collaborative production from Google Slides | Eligible subscription, Japanese features, slide count, and duration |
| Narakeet | PowerPoint videos using speaker notes as a script | Production minutes, regeneration, and animation handling |
| SpeechSlide AI | Create presentation scripts, narration, and videos from slides | Monthly project and generation allowances and slide limits |
PowerPoint imports and scripting
Synthesia imports PowerPoint text, shapes, and images as editable elements. It can also use speaker notes, but it does not import the original animations.
HeyGen offers two approaches: using slides as background images or importing PowerPoint content as editable elements. It supports speaker notes and AI-generated scripts.
SpeechSlide AI generates scripts from PowerPoint or PDF material. You can edit the text before creating the audio or video, whether you want to add an explanation to your slides or prepare a presentation script.
Monthly prices and allowances
The table shows monthly billing prices. Services measure usage differently, including video minutes, credits, and generation counts. Compare those allowances with the number of presentations and video length you expect to create.
The SpeechSlide AI prices shown are for Japan and include tax. Its English pricing page lists the international offering.
SpeechSlide AI has separate script and audio generation limits. See the pricing page for the full allowances.
| Service and plan | Monthly price | Allowances and terms |
|---|---|---|
| Synthesia Starter | $29 | 10 video minutes per month; credits apply according to the features used |
| Synthesia Creator | $89 | 30 video minutes per month; credits apply according to the features used |
| HeyGen Creator | $29 | 600 credits per month; up to 30 minutes per video |
| SpeechSlide AI Standard | JPY 2,200/month, tax included, Japan plan | 10 projects and 30 video generations per month; up to 20 slides per deck |
| SpeechSlide AI Premium | JPY 5,500/month, tax included, Japan plan | 30 projects and 90 video generations per month; up to 30 slides per deck |
Questions to help you choose
- If you want an avatar, compare the appearance, movement, and languages in finished examples. Synthesia and HeyGen are options to consider.
- If you want to use an existing deck, check how its text and charts appear after importing the PowerPoint or PDF.
- If you also need help writing, read the generated script and try adding or revising an explanation.
- If you need to distribute the finished video, check the plan's download formats and watermark policy.
Try your own slides from start to finish
SpeechSlide AI creates scripts, narration, and videos from material you want to present or explain. Try it with a research presentation, lesson, training deck, product introduction, or another example from your work.
To try the free allowance, prepare a deck of up to eight slides. Read the script, listen to the narration, and watch the finished video to see how it suits your needs.
Sample Video Created with SpeechSlide AI
Just upload your slides to get a narrated presentation video like this one.
SpeechSlide AI
Find a Use Case Close to Yours
Explore slide-to-video workflows across education, healthcare, training, sales, and creator use cases.
View Use CasesFrequently Asked Questions
Can I use SpeechSlide AI for free?＋
Yes. The free plan lets you create up to 2 projects and 4 videos per month. No credit card required.
Which file formats are supported?＋
PDF and PowerPoint (PPT/PPTX) files are supported. Upload the slides you already have.
Which languages are supported for narration?＋
AI narration is available in Japanese, English, Chinese, Korean, German, Spanish, and more.
Can I use the generated videos commercially?＋
Yes. Videos can be used for training, sales, lectures, and marketing. Paid plans allow watermark-free MP4 downloads.
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