Turn a PowerPoint deck into a presentation video automatically

Use a different caption text

Use this when a line is written in kana for pronunciation, or when the caption should be shorter. Changing only the caption does not recreate the narration.

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.

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

Where the caption setting lives

The caption text is set under Caption (テロップ) inside each line’s Details. The figure shows Details opened on line 2 of slide 1.

  1. Click Details on the line whose caption you want to change.
  2. Find the Caption row. It starts as Same as spoken text, so the spoken text is shown as the caption. Clicking it reveals a field for the caption text.
  1. Action Click Details on the line whose caption you want to change.
  2. Check Find the Caption row. It starts as Same as spoken text, so the spoken text is shown as the caption. Clicking it reveals a field for the caption text.
Line 2 with Details opened, showing the Reading and Avatar settings.

Check The next figure shows a caption changed on a line of slide 3.

STEP02

Use a different caption text

The spoken text and the on-screen caption can differ. On slide 3, one line was written in kana for pronunciation, so we changed only its caption to the abbreviation SSO.

  1. Check the spoken text. This line is written the way it is pronounced.
  2. Click Details at the lower right of the line, then click Same as spoken on the Caption row. A caption field appears; untick Same as spoken to its left.
  3. Type the text to show on screen in the caption field and press Tab. In the example we entered the sentence with the abbreviation SSO.
  1. Check Check the spoken text. This line is written the way it is pronounced.
  2. Action Click Details at the lower right of the line, then click Same as spoken on the Caption row. A caption field appears; untick Same as spoken to its left.
  3. Enter Type the text to show on screen in the caption field and press Tab. In the example we entered the sentence with the abbreviation SSO.
Line 3 of slide 3 with a separate caption text.

Check Below the field, the screen notes that the caption uses this text while narration uses the spoken text above. Changing only the caption does not recreate the narration; the line stayed at 6.0 seconds in the example.

STEP03

Caption lines are set for the whole video

Whether captions use one or two lines is a setting for the whole video, found under Captions in Parameter settings at the upper right.

  1. Check Lines: two here. The choices are the template default, one line and two lines.
  1. Check Check Lines: two here. The choices are the template default, one line and two lines.
The Captions and Total length sections of Parameter settings.

Check For long sentences, check in the preview that the caption fits in two lines. If not, split the line or shorten only the caption.

STEP04

Captions land on the Captions row in the editor

Captions decided in the studio appear in the track editor as one clip per line on the top Captions row. The figure shows the editor opened after finishing.

  1. Check the clips on the Captions row. Each is labelled as a linked caption at 40px and follows the length of its audio clip.
  2. The Caption band row below is the black band behind the captions.
  1. Check Check the clips on the Captions row. Each is labelled as a linked caption at 40px and follows the length of its audio clip.
  2. Check The Caption band row below is the black band behind the captions.
The track editor just after opening: rows for captions, caption band, presenter, presenter audio, emphasis, slides and background.

Check You can also edit caption clips in the editor; see the Subtitles guide under Basic operations for details.

BEFORE YOU FINISH

One final check.

A note below the field shows that the caption and narration use different text. Continue with “Set speed and body motion line by line”.

Scroll the enlarged image to explore