Header for the time frame. In the version of 'v1, the frame contains the heartbeat delimiter if the type is META and the frame contains the time slice data.
| Property Name | Bit Length | Description |
|---|---|---|
| magic | 64 | Magic number identifying the header |
| timeFrameId | 32 | Identifier for the time frame |
| numSource | 32 | Number of sources in the time frame |
| length | 64 | Total length of the time frame |