DocumentationAnalyticsStreaming media services guide

Chapter start

Last update: May 28, 2026

CREATED FOR:

  • Developer

The chapter start event signals the beginning of a chapter within the content. Chapter tracking is optional and not required for core media tracking. Chapters cannot overlap; send Chapter complete or Chapter skip to close the current chapter before starting a new one.

Web SDK

Call sendEvent with eventType: "media.chapterStart" and the required chapterDetails:

code language-javascript 
alloy("sendEvent", {
  xdm: {
    eventType: "media.chapterStart",
    mediaCollection: {
      chapterDetails: {
        friendlyName: "Pilot Episode - Opening",
        index: 1,
        offset: 0,
        length: 240
      },
      sessionID: "{sid}",
      playhead: 0
    }
  }
});
iOS

Pass the chapter name, position, length, and start time to createChapterObject, then call trackEvent.

code language-swift 
let chapterObject = Media.createChapterObjectWith(name: "Pilot Episode - Opening",
                                              position: 1,
                                                length: 240,
                                             startTime: 0)

tracker.trackEvent(event: MediaEvent.ChapterStart, info: chapterObject, metadata: nil)
Android

Pass the chapter name, position, length, and start time to createChapterObject, then call trackEvent.

code language-kotlin 
val chapterObject = Media.createChapterObject("Pilot Episode - Opening",
                                              1,
                                              240,
                                              0)

tracker.trackEvent(Media.Event.ChapterStart, chapterObject, null)
Roku

Call sendMediaEvent with eventType: "media.chapterStart" and the required chapterDetails:

code language-brightscript 
m.aepSdk.sendMediaEvent({
    "xdm": {
        "eventType": "media.chapterStart",
        "mediaCollection": {
            "chapterDetails": {
                "friendlyName": "Pilot Episode - Opening",
                "index": 1,
                "offset": 0,
                "length": 240
            },
            "playhead": 0
        }
    }
})
Media Edge API

Call the chapterStart endpoint with the required chapterDetails:

code language-sh 
curl -X POST "https://edge.adobedc.net/ee/va/v1/chapterStart?configId={datastreamID}" \
--header 'Content-Type: application/json' \
--data '{
  "events": [{
    "xdm": {
      "eventType": "media.chapterStart",
      "mediaCollection": {
        "sessionID": "{sid}",
        "playhead": 0,
        "chapterDetails": {
          "index": 1,
          "length": 240,
          "offset": 0
        }
      },
      "timestamp": "YYYY-08-20T22:41:40+00:00"
    }
  }]
}'

Legacy implementation types (Analytics-only)

Media SDK JS 3.x

Pass the chapter name, position, length, and start time to ADB.Media.createChapterObject:

code language-javascript 
var chapterInfo = ADB.Media.createChapterObject(
  "Pilot Episode - Opening",  // name
  1,                          // position
  240,                        // length (seconds)
  0                           // start time (seconds)
);

tracker.trackEvent(ADB.Media.Event.ChapterStart, chapterInfo, null);
Chromecast

Pass the chapter name, position, length, and start time to ADBMobile.media.createChapterObject:

code language-javascript 
var chapterInfo = ADBMobile.media.createChapterObject(
  "Pilot Episode - Opening",  // name
  1,                          // position
  240,                        // length (seconds)
  0                           // start time (seconds)
);

ADBMobile.media.trackEvent(ADBMobile.media.Event.ChapterStart, chapterInfo, null);
Media Collection API

Send a chapterStart POST to the events endpoint:

code language-json 
{
  "playerTime": { "playhead": 0, "ts": 1699523820000 },
  "eventType": "chapterStart",
  "params": {
    "media.chapter.friendlyName": "Pilot Episode - Opening",
    "media.chapter.index": 1,
    "media.chapter.offset": 0,
    "media.chapter.length": 240
  }
}
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