Media Server 25.4
Media Server Help

# Create a Clip from a Rolling Buffer

Use the following procedure to retrieve a section of video from the rolling buffer.

To create a clip from a rolling buffer

- Send the `CreateClip` action to Media Server. Set the following parameters:

  `Stream` | The name of the rolling buffer to create the clip from.
  `StartTime` | The start time of the clip in epoch-milliseconds or ISO-8601 format. Video must exist in the rolling buffer for the start time that you specify (or begin within 15 seconds of the start time). If video begins within 15 seconds after the start time that you specify, Media Server automatically adjusts the start time. If there is no video in the rolling buffer within 15 seconds after the start time, the action fails.
  `Duration` | The duration of the clip.
  `OutputFormat` | (Optional) The format of the container file that is returned (default `ts`, but you can also choose `mp4`).
  `Path` | (Optional) The path to save the clip to. The directory must be on a file system that Media Server can access. If you do not set this parameter, the file is returned in the response.

  For example,

      http://localhost:14000/action=CreateClip&Stream=BBCNews
                                              &StartTime=1393000074243
                                              &Duration=5minutes
                                              &Path=./temp/News1.ts

  This action instructs Media Server to create a five minute clip from the rolling buffer `BBCNews`, beginning from Fri, 21 Feb 2014 16:27:54 GMT, and to save the clip as the `News1.ts` file in the `temp` directory.

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Version 25.4 | Last updated October 2025

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Product: Knowledge Discovery Media Server 25.4

Topic Title: Create a Clip from a Rolling Buffer