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# kSequenceTrackProperty_TimeResolution

The time resolution for a sequence of music events. For example, this value can indicate the time resolution that was specified by the MIDI file used to construct a sequence.

```
var kSequenceTrackProperty_TimeResolution: UInt32 { get }
```

## Discussion

To use a specific time resolution when writing a new file, retrieve this value and then specify it when calling the [`MusicSequenceFileCreate(_:_:_:_:_:)`](/documentation/AudioToolbox/MusicSequenceFileCreate(_:_:_:_:_:)) function.

This value does not directly determine playback rate for a music track, but rather it

`kSequenceTrackProperty_TimeResolution` is set in two possible ways:

- If you create a music sequence programmatically, the value is set to 480.
- If you create a music sequence from a MIDI file, the value is set to the time resolution specified in the MIDI file.

A read-only `SInt16` value that is valid only for a tempo track.

---

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