---
title: epoch
framework: coremedia
role: symbol
role_heading: Instance Property
path: coremedia/cmtime/epoch
---

# epoch

The epoch of the time.

## Declaration

```swift
var epoch: CMTimeEpoch
```

## Discussion

Discussion Use the epoch to differentiate between equal timestamps that are different due to looping, multi-item sequencing, and so on.

## See Also

### Accessing Time Values

- [value](coremedia/cmtime/value.md)
- [timescale](coremedia/cmtime/timescale.md)
- [flags](coremedia/cmtime/flags.md)