How to add a chapter progress bar to a demo video
Upload the screen recording and name the sections. Vizard Agent builds a progress bar that advances with the video and labels each chapter along it, taking the bar's colour from your own interface screenshot so it reads as part of the product. It also crops to the application window and covers long static screens with supporting shots.
What do you type into Vizard Agent?
Name the sections and let it handle placement. Vizard Agent works out the timing from the narration, so the useful instruction is the list of chapters, not where the bar should sit. Keep the labels to two or three words and cap the supporting shots, or they take over.
Prompt
What does Vizard Agent actually do?
Much of the work is the crop, not the bar. A third of the session went on one question: where exactly does the application window sit, and does it stay there? The bar's colour is then sampled from the product, not approximated. In the session behind this article it:
- Took a 1910x1080 screen recording of 131.88 seconds and its separate narration, and transcribed the narration with timestamps.
- Ran a shot transcription of the picture and extracted key frames of the interface.
- Detected the browser window's coordinates, rechecked them at 60 seconds, then found the window in every extracted frame to see how zoom changed it.
- Cropped every frame to a fixed region and verified the crop at 48, 60 and 85 seconds against the tools each frame needed to show.
- Downloaded stock footage for the long static stretches, sampled the brand colour from the saturated pixels of an interface screenshot and found a font for the labels.
- Checked every clip's frame rate, then built the timeline slice by slice: cropping, re-timing, scaling, muting and inserting the supporting shots.
When does this not work well?
A progress bar takes up screen space and makes a promise about structure. Five or six labels is the practical limit, and long section names won't fit under the bar. A moving window means the crop has to follow it or stay wide. On a ninety-second video the bar is clutter, and vertical formats leave less width to label.
Common questions
How many sections work? Five or six. Vizard Agent will say when the labels stop fitting.
Will it match my brand colour? Yes. Vizard Agent samples it from a screenshot rather than approximating.
What if the window moves? Vizard Agent detects the coordinates at several timestamps to check.