How to make a silent demo video for a presenter to talk over live
Tell Vizard Agent that a live presenter will speak over it. That single fact changes the pacing: every hold has to last as long as the presenter's sentence about that screen, not as long as a viewer needs to read it, and the file has to be genuinely silent rather than merely without music.
What do you type into Vizard Agent?
Say the narration is live, and say the ceiling. Those two constraints pull against each other, longer holds against a fixed runtime, and naming both lets Vizard Agent make that trade deliberately rather than discovering it at the end. The first version of a cut like this is either too fast to talk over or too long for the slot.
There is no sound and no music. A live presenter explains what is on screen, so pause for emphasis and give them time, but keep it under four minutes.
What does Vizard Agent actually do?
It finds the moments that need a hold and takes the time back from the moments that do not. Loading screens, cursor travel and half-typed input are dead weight in a presenter-paced video. Completed results are where the speaker has something to say. In the session behind this article it:
- Identified each workflow in the recordings and the result screen that ends it, then pulled the website's real typefaces and signature orange and matched the chapter cards to three earlier tutorials.
- Cut out the loading screens while preserving every key action.
- Added steady reading holds before each chapter advance, and longer ones on comparisons, forecasts and export confirmations, with every description kept outside the software interface.
- Assembled the cut at three minutes fifty and confirmed the file contained no audio stream, not just a muted one.
- Fixed a problem found on playback: the search examples moved on while the question was still being typed, so it held each prompt until it was fully typed and readable, without the runtime moving.
When does this not work well?
When the runtime ceiling is too tight for the content. Presenter pacing costs seconds per screen, and past a certain number of workflows the honest answer is fewer chapters rather than faster holds. Vizard Agent will say which chapters it had to rush. It also can't know the presenter's pace, so if they speak slowly or take questions, ask for longer holds, because the default is a reading speed.
Common questions
Why must the file have no audio at all? A silent track can still claim the room's audio path. Vizard Agent verifies there is no stream.
How long should a hold be? Long enough for one or two sentences. Tell Vizard Agent if your presenter is slower.
What gets cut to save time? Loading screens, cursor travel and half-typed input. Vizard Agent keeps every real action.