<!--
{
  "documentType" : "article",
  "framework" : "CoreMedia",
  "identifier" : "/documentation/CoreMedia/cmtimebase-errors",
  "metadataVersion" : "0.1.0",
  "role" : "collectionGroup",
  "title" : "CMTimebase Error Codes"
}
-->

# CMTimebase Error Codes

Constants that represent errors in Core Media timebase operations.

## Topics

### Constants

[`var kCMTimebaseError_MissingRequiredParameter: OSStatus`](/documentation/CoreMedia/kCMTimebaseError_MissingRequiredParameter)

A timebase error that indicates a parameter is missing.

[`var kCMTimebaseError_InvalidParameter: OSStatus`](/documentation/CoreMedia/kCMTimebaseError_InvalidParameter)

A timebase error that indicates a parameter isn’t valid.

[`var kCMTimebaseError_AllocationFailed: OSStatus`](/documentation/CoreMedia/kCMTimebaseError_AllocationFailed)

A timebase error that indicates the memory allocation fails.

[`var kCMTimebaseError_TimerIntervalTooShort: OSStatus`](/documentation/CoreMedia/kCMTimebaseError_TimerIntervalTooShort)

A timebase error that indicates the time interval is too short.

[`var kCMTimebaseError_ReadOnly: OSStatus`](/documentation/CoreMedia/kCMTimebaseError_ReadOnly)

A timebase error that indicates the system attempts to modify a read-only timebase.


---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)