# writehaltchunk

Writes a HALT control chunk.

### Synopsis

`writehaltchunk <stream_time> <subscriber_id>`

### Description

`Writehaltchunk` writes a HALT control chunk to the output stream. The result is a halt chunk keyed to a specified subscriber for a given stream time.

The chunk sent to the subscriber at halt time has the subtype HALT. It prevents the streamer thread from delivering data to any subscriber until a reply is received from the specified subscriber.

This essentially provides the specified subscriber with time to process its data while no other data are arriving from the streamer thread.

### Arguments

stream_time
  0 to 7FFFFFFF (hex)

subscriber_id
  4-byte characters describing the subscriber type (e.g. FILM, CTRL, SNDS)

### Caveats

None.