How do I convert a PowerPoint to video with AI narration?
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To convert a PowerPoint to video with AI narration, upload the .pptx (or .ppt / .pdf) to Unmixr, choose an AI narrator, review the per-slide script, and export a 720p MP4. Unmixr splits the deck into one scene per slide, turns the speaker notes (or the slide text) into narration, syncs the voice to each slide, and renders the video with captions and a transcript. A 10-slide deck is typically ready in a couple of minutes.
Can I convert PPT to MP4 for free?
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A free Unmixr account converts PowerPoint decks to MP4 at no cost, with exports up to 3 minutes long and a short Unmixr watermark. No card is required, and paid plans remove both the length cap and the watermark. You can play the narration in the studio before exporting, so nothing is spent on a video you have not heard first.
What is the difference between PowerPoint's built-in Export to Video and Unmixr?
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PowerPoint's File → Export → Create a Video only packages what is already in the file: your slide timings and any narration you recorded yourself. Unmixr generates the narration. It reads the slide text and speaker notes, voices them with a realistic AI narrator, syncs the audio to each slide, and adds captions and a transcript — in a browser, with no PowerPoint install and no microphone. PowerPoint's own export can render at 1080p or higher and keeps your animations; Unmixr exports 720p and renders each slide as a still scene.
What resolution is the exported video?
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Unmixr exports PowerPoint videos as 720p MP4 files (1280×720 for a standard 16:9 deck). That is lower than PowerPoint's own Export to Video, which offers 1080p Full HD and above, so if you need a 1080p master you would have to use PowerPoint's export with narration you record yourself. At 720p, slide text stays readable on a laptop screen and the file plays in any LMS, on YouTube, or in a standard video player.
Does Unmixr use my speaker notes?
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Unmixr uses a slide's speaker notes as that slide's narration, and falls back to the slide text when a slide has no notes. Every line is editable in Scene Studio before you render, so you can rewrite a slide without touching the PowerPoint file.
Do I need PowerPoint installed to convert a deck?
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No PowerPoint install is needed: Unmixr runs in the browser and converts the file on its own servers, so it works on Windows, Mac, Linux, and Chromebooks. Decks made in Google Slides or Keynote work too — export them as .pptx or .pdf first.
What file formats can I convert to video?
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Unmixr turns PowerPoint (.pptx, .ppt), PDF (.pdf), and Word (.docx) files into narrated
video, because those have visual pages to show. PowerPoint and PDF are split into one scene per slide or page automatically. For narrated
audio, you can also upload a plain-text script (.txt), Markdown (.md), or HTML (.html), or paste a script straight into the wizard; those have nothing to show on screen, so they produce a voiced lesson rather than a video. See
supported file formats for the full breakdown.
Can I choose different AI voices?
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Unmixr lets you pick a realistic AI voice for a deck in 100+ languages and assign a different voice to individual slides in Scene Studio. That covers decks that need more than one narrator, such as a dialogue or a role-play slide.
Can I edit the video after it is generated?
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A video Unmixr generates from a PowerPoint stays editable in Scene Studio, where you can rewrite a line, retime a slide, swap the voice, or add background music, then export again.
Are PowerPoint animations and transitions preserved?
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PowerPoint animations and transitions are not preserved, because Unmixr renders each slide as a still image timed to its narration. If a slide relies on a build, split it into two or three slides that each show one step. Slide-by-slide timing, background music, and the voice for each scene can all be adjusted in Scene Studio.
How long does the conversion take?
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A typical 10-slide presentation takes Unmixr about 1–2 minutes to process, narrate, and assemble into a video project. Longer decks scale roughly with slide count, and the render runs in the background so you can keep working.
Can I add captions, a transcript, or background music?
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Every Unmixr PowerPoint-to-video export includes SRT/VTT captions and a transcript alongside the MP4, and Scene Studio adds royalty-free background music under the narration. Course projects can also be packaged as SCORM on paid plans.
Can I translate the narrated video into other languages?
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Unmixr can narrate a deck in 100+ languages and dub the finished video into other languages with subtitles through
Course Localization. One deck becomes several language versions without rebuilding a slide.
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