Turn a PowerPoint deck into a presentation video automatically

Rewrite a line

Click a line to rewrite it in place: make it sound like you, or correct numbers and names to match the slides.

The example is a five-slide briefing deck on the benefits of a generative-AI chat platform for small and midsize companies. It is a sample report produced by DeepResearch in Bestllam (https://bestllam.com), our own service, loaded as it is. The presenter is Sophia.

If you split long lines first, only the sentence you change is recreated.

4 stepsActual product screenshots

BEFORE YOU START

Before you start

Prepare the PowerPoint file (.pptx) you want to turn into a video and open the MotionVox home screen. The tutorials in this chapter follow the same five-slide deck.

Screenshots show actual sample projects. Instructions describe desktop browser operation; this guide can also be read on a phone.

STEP01

Find the line to fix

First read the script slide by slide and decide which line to fix. The figure shows slide 2 just after splitting it into sentences.

  1. Read line 2. Before the change it ended with “…can be reduced” and was 6.2 seconds long. We decided to reword it to match the slide.
  1. Check Read line 2. Before the change it ended with “…can be reduced” and was 6.2 seconds long. We decided to reword it to match the slide.
The script of slide 2 split into four one-sentence lines.

Check Always compare numbers and names with the slide. The automatic draft turns slide text into spoken language, but how firmly something is stated is for you to adjust.

STEP02

Rewrite a line

You can rewrite script text in place. In the example we changed line 2 of slide 2 from a statement that costs can be cut to one that says there are cases where they were cut, to match the slide.

  1. Click the text of the line and type the new sentence. Press Tab or click outside the line to confirm.
  2. Check that the caption in the centre preview shows the new sentence.
  1. Enter Click the text of the line and type the new sentence. Press Tab or click outside the line to confirm.
  2. Check Check that the caption in the centre preview shows the new sentence.
Line 2 of slide 2 after rewriting it; the caption in the preview shows the new sentence.

Check After confirming, only that line’s narration is recreated. Here line 2 changed from 6.2 to 6.8 seconds while the others stayed the same. Also check that the Saved automatically time at the upper right has updated.

STEP03

Listen to the rewritten line

You can listen to a rewritten line straight away with its buttons. The figure shows slide 2 after the video was finished (captured with Show all emphasis ticked).

  1. Press Play on line 2 to hear the recreated narration (sound will play). Pause and Stop are beside it.
  2. Check that the line length reads 6.8 seconds.
  1. Action Press Play on line 2 to hear the recreated narration (sound will play). Pause and Stop are beside it.
  2. Check Check that the line length reads 6.8 seconds.
Slide 2 with Show all emphasis ticked: four emphasis marks on the slide.

Check When a word such as a company name or abbreviation is read wrongly, write it in kana as it should sound and fix the on-screen text with “Use a different caption text”.

STEP04

If you want to take a change back

If you do not like the result, you can take it back from the ⋯ menu. The figure shows the menu opened on slide 1.

  1. Click ⋯ at the upper right of This slide’s script.
  2. Undo, Redo and History… are listed.
  1. Action Click ⋯ at the upper right of This slide’s script.
  2. Check Undo, Redo and History… are listed.
The ⋯ menu at the upper right of This slide’s script, opened.

Check Each confirmed rewrite recreates the narration, so decide the wording before confirming with Tab to save waiting time.

BEFORE YOU FINISH

One final check.

You are done when the changed line shows a new length and the other lines are unchanged. Continue with “Use a different caption text”.

Scroll the enlarged image to explore