How to Set Up and Trigger Video Clips in VO Pads

Updated

VO Pads is a browser-based video player that lets you load clips onto pads and fire them instantly with a mouse, keyboard, or MIDI controller. You can set it up in a few minutes: open the site, tap a pad, add a YouTube URL or a local mp4, then trigger playback from the pad grid. No download or install is required, and a finished project can be shared as a single URL. The main conditions to know up front: it currently supports YouTube videos and local mp4 files only, Chrome gives the best experience, and on iOS or iPadOS only one video can play at a time.

What you need before you start

  • A browser that supports HTML5 (Chrome recommended).
  • Your source material: either YouTube URLs or mp4 files stored on your device.
  • Optional: a MIDI controller if you want hardware triggering instead of clicking or typing.

Step-by-step setup

1. Open VO Pads

Go to the site in your browser. VO Pads runs entirely in the web browser, so there is nothing to download or install — the pad interface loads directly.

2. Load a clip onto a pad

Tap a pad to bring up a selector. From there you can either:

  • Add a file — pick a local mp4 from your device.
  • Paste a YouTube URL — the video is pulled in from YouTube.

Repeat this for each pad you want to fill. Each pad holds its own clip, which is what makes the grid a performance surface rather than a single-player window.

3. Trigger playback

Once pads are loaded, you can fire them by:

  • Pad — clicking or tapping the pad itself.
  • Keyboard — assigning keys so clips play from the keyboard.
  • MIDI — using a MIDI controller for hardware-style triggering.

The goal is instant playback: hit the trigger, the clip starts.

4. Shape the playback

VO Pads gives you timing controls per clip so the performance stays tight:

  • Set the start point.
  • Set the duration.
  • Adjust playback speed.
  • Fine-tune volume for the mix.

5. Build your performance environment

Controls are customizable, so you can arrange the pad layout and mappings to match how you actually perform. This is the step that turns a set of loaded clips into a playable instrument.

6. Share the project

Share your entire project with a single URL. Anyone with the link can open and play it exactly as you set it up — no downloads, no installs. This is useful for collaboration and live performances.

Quick reference

Task How
Add a clip Tap a pad → add a local mp4 file or paste a YouTube URL
Trigger a clip Pad click/tap, keyboard, or MIDI
Control timing Set start, duration, playback speed, and volume
Share Send the project URL

Common snags

  • Nothing plays on iOS/iPadOS when you trigger a second clip. Only one video can play at a time on those platforms, so plan around single-clip playback there.
  • A clip won't load. Check the source type — only YouTube videos and local mp4 files are supported.
  • Timing feels off. Revisit the start and duration settings for that pad; these are what define when a clip begins and how long it runs.
  • Unexpected behavior in another browser. Switch to Chrome, which is recommended for the best experience.

Where to go next

The site's own references point to Koala Sampler (koalasampler.com) as a key inspiration, WhoSampled (whosampled.com) for tracking down sample sources, and De La Soul (wearedelasoul.com). If you want to hear the pad-and-trigger approach in context, the demo material on the site includes a drum-machine demo and sample-source explorations — useful for seeing how clips are sequenced rather than just played one at a time.