---
title: Timebase Notifications
framework: coremedia
role: collectionGroup
role_heading: API Collection
path: coremedia/timebase-notifications
---

# Timebase Notifications

Keys that represent timebase notifications.

## Topics

### Constants

- [kCMTimebaseNotification_EffectiveRateChanged](coremedia/kcmtimebasenotification_effectiveratechanged.md)
- [kCMTimebaseNotification_TimeJumped](coremedia/kcmtimebasenotification_timejumped.md)

## See Also

### Constants

- [CMClock Error Codes](coremedia/cmclock-error-codes.md)
- [CMTimebase Error Codes](coremedia/cmtimebase-errors.md)
- [CMSync error codes](coremedia/cmsync-error-codes.md)