Custom dimension
A custom dimension is a label your own app attaches to each view, such as subscription plan, course name, A/B test group or creator ID, so playback metrics can be grouped by things only your business knows. Built-in dimensions cover devices and networks; custom ones cover your product.
Why it matters
Built-in dimensions explain technical causes; custom dimensions tie playback quality to the business. They show whether premium subscribers get the quality they pay for, whether one course or creator has problems, or whether an A/B test changed engagement.
How it works
- Decide which business attributes matter, such as plan tier, course, creator or experiment group.
- Pass those values to the player analytics SDK when each view starts.
- The values are stored with the view, just like built-in dimensions.
- Filter and break down any metric by them to compare business segments.
What should I use custom dimensions for?
Use custom dimensions for attributes only your business knows, such as subscription plan, content partner, course, creator, A/B test group or app release channel. Avoid personal data such as names or emails, and keep values consistent, since a typo becomes a separate group in every report.
How many custom dimensions do I need?
Most teams need only three to five custom dimensions to start: plan tier, content category, an experiment group and an app or release version. Add more only when a real business question needs them, since unused or inconsistent fields clutter reports and confuse whoever reads them later. That starter set fits easily in FastPix Video Data, which accepts up to 10 custom dimensions on every view and leaves room for new questions later.
Where it's used
Online learning platforms tag views with course and lesson, and subscription services tag them with plan tier, to see whether premium customers get the experience they pay for.
Where it usually goes wrong, and how FastPix handles it
Without business labels on each view, teams cannot tell whether quality problems hit paying customers, a specific creator or one experiment group.
Custom dimensions, up to 10 per view, are passed from the player SDK into FastPix Video Data and work for filtering and breakdowns like built-in ones. That shows whether premium subscribers, a key creator or one experiment group get the quality you expect.
