# Restrictions for multiplexes
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Following is a summary of the restrictions associated with multiplexes:
+ There are service quotas for the number of multiplexes you can create. For more information, see [Quotas in MediaLive](limits.md).
+ These limitations apply to a multiplex:
  + Each multiplex produces only one MPTS. The MPTS has two pipelines, so it is sent to two destinations. 
  + All multiplex outputs must include video. 
+ These limitations apply to a program:
  + Each program in a multiplex is single use. It is attached only to one multiplex, and you can use it only for that multiplex.
+ These limitations apply to a channel in a multiplex:
  + Each channel is single use. You can attach it to only one program in the multiplex, and you can use it only for that multiplex. 
  + Each channel contains one and only one output group, of type multiplex. It can't contain any other type of output group.