# Creating media concatenation pipelines for Amazon Chime SDK meetings
<a name="create-concat-pipe"></a>

You use media concatenation pipelines to concatenate the artifacts (files) generated by media capture pipelines.

Media capture pipelines capture the contents of a meeting by chunking the media streams and storing those artifacts in your Amazon S3 bucket. Media capture pipelines create the following types of artifacts: 
+ Audio
+ Video
+ Content shares
+ Data channel messages
+ Transcription messages
+ Meeting events
+ Composited video, meaning content shares and multiple video streams displayed in a grid as video tiles.

Media concatenation pipelines allow you to concatenate each type of artifact into a single file, and then store those larger files in your Amazon S3 bucket. You can create a media concatenation pipeline without waiting for the media capture event to end, but the concatenation pipeline only starts concatenating when the capture pipeline stops.

**Note**  
Media capture pipelines, media concatenation pipelines, and Amazon S3 buckets must reside in the same AWS account.

**Topics**
+ [Amazon Chime SDK concatenation pipeline architecture](concat-architecture.md)
+ [Building an Amazon Chime SDK media concatenation pipeline](create-concat-pipe-steps.md)
+ [Understanding the Amazon S3 bucket folder structure for Amazon Chime SDK concatenation pipelines](concat-folder-structure.md)