Set up the IMA SDK for DAI
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IMA SDKs make it easy to integrate multimedia ads into your websites and apps. IMA SDKs can request ads from any VAST-compliant ad server and manage ad playback in your apps. With IMA DAI SDKs, apps make a stream request for ad and content video—either VOD or live content. The SDK then returns a combined video stream, so that you don't have to manage switching between ad and content video within your app.

Select the DAI solution you're interested in

Full service DAI

This guide demonstrates how to integrate the IMA DAI SDK into a simple video player app. If you would like to view or follow along with a completed sample integration, download the BasicExample from GitHub.

IMA DAI overview

Implementing IMA DAI involves four main SDK components as demonstrated in this guide:

StreamDisplayContainer: A container object that sits on top of the video playback element and houses the ad UI elements.
AdsLoader: An object that requests streams and handles events triggered by stream request response objects. You should only instantiate one ads loader, which can be reused throughout the life of the application.
StreamRequest: An object that defines a stream request. Stream requests can either be for video-on-demand or live streams. Live stream requests specify an asset key, while VOD requests specify a CMS ID and video ID. Both request types can optionally include an API key needed to access specified streams, and a Google Ad Manager network code for the IMA SDK to handle ads identifiers as specified in Google Ad Manager settings.
StreamManager: An object that handles dynamic ad insertion streams and interactions with the DAI backend. The stream manager also handles tracking pings and forwards stream and ad events to the publisher.

Prerequisites

Android Studio
Sample video player app for the SDK integration

Download and run the sample video player app

The sample app provides a working video player that plays HLS video. Use this as a starting point for integrating the IMA DAI SDK's DAI capabilities.

Download the sample video player app and extract it.
Start Android Studio and select Open an existing Android Studio project, or if Android Studio is already running, select File > New > Import Project. Then choose SampleVideoPlayer/build.gradle.
Run a Gradle sync by selecting Tools > Android > Sync Project with Gradle Files.
Ensure that the player app compiles and runs on a physical Android device or an Android Virtual Device using Run > Run 'app'. It's normal for the video stream to take a few moments to load before playing.

Examine the sample video player

The sample video player doesn't contain any IMA DAI SDK integration code yet. The sample app consists of two major parts:

samplevideoplayer/SampleVideoPlayer.java: An ExoPlayer-based HLS player that serves as the basis for IMA DAI integration.
videoplayerapp/MyActivity.java: This activity creates the video player and passes it a Context and media3.ui.PlayerView.

Add the IMA DAI SDK to the player app

You must also include a reference to the IMA DAI SDK. In Android Studio, add the following to your application-level build.gradle file, located at app/build.gradle:

app/build.gradle

repositories {
    google()
    mavenCentral()
}

dependencies {
    def media3_version = "1.5.1"
    implementation(platform("org.jetbrains.kotlin:kotlin-bom:1.8.0"))
    implementation 'androidx.appcompat:appcompat:1.7.0'
    implementation "androidx.media3:media3-ui:$media3_version"
    implementation "androidx.media3:media3-exoplayer:$media3_version"
    implementation "androidx.media3:media3-exoplayer-hls:$media3_version"
    implementation "androidx.media3:media3-exoplayer-dash:$media3_version"
    implementation 'androidx.mediarouter:mediarouter:1.7.0'
    implementation 'com.google.ads.interactivemedia.v3:interactivemedia:3.36.0'build.gradle

Integrate the IMA DAI SDK

Create a new class called SampleAdsWrapper in the videoplayerapp package (in app/java/com.google.ads.interactivemedia.v3.samples/videoplayerapp/) to wrap the existing SampleVideoPlayer and add logic implementing IMA DAI. To do this, you must first create an AdsLoader which is used to request the DAI stream.

This snippet includes sample parameters for HLS and DASH, live and VOD streams. To set which stream is being played, update the CONTENT_TYPE variable.

videoplayerapp/SampleAdsWrapper.java

package com.google.ads.interactivemedia.v3.samples.videoplayerapp;

import android.annotation.SuppressLint;
import android.content.Context;
import android.view.ViewGroup;
import android.webkit.WebView;
import androidx.annotation.Nullable;
import com.google.ads.interactivemedia.v3.api.AdErrorEvent;
import com.google.ads.interactivemedia.v3.api.AdEvent;
import com.google.ads.interactivemedia.v3.api.AdsLoader;
import com.google.ads.interactivemedia.v3.api.AdsManagerLoadedEvent;
import com.google.ads.interactivemedia.v3.api.CuePoint;
import com.google.ads.interactivemedia.v3.api.ImaSdkFactory;
import com.google.ads.interactivemedia.v3.api.StreamDisplayContainer;
import com.google.ads.interactivemedia.v3.api.StreamManager;
import com.google.ads.interactivemedia.v3.api.StreamRequest;
import com.google.ads.interactivemedia.v3.api.StreamRequest.StreamFormat;
import com.google.ads.interactivemedia.v3.api.player.VideoProgressUpdate;
import com.google.ads.interactivemedia.v3.api.player.VideoStreamPlayer;
import com.google.ads.interactivemedia.v3.samples.samplevideoplayer.SampleVideoPlayer;
import com.google.ads.interactivemedia.v3.samples.samplevideoplayer.SampleVideoPlayer.SampleVideoPlayerCallback;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

/** This class adds ad-serving support to Sample HlsVideoPlayer */
@SuppressLint("UnsafeOptInUsageError")
/* @SuppressLint is needed for new media3 APIs. */
public class SampleAdsWrapper
    implements AdEvent.AdEventListener, AdErrorEvent.AdErrorListener, AdsLoader.AdsLoadedListener {

  // Live HLS stream asset key.
  private static final String TEST_HLS_ASSET_KEY = "c-rArva4ShKVIAkNfy6HUQ";

  // Live DASH stream asset key.
  private static final String TEST_DASH_ASSET_KEY = "PSzZMzAkSXCmlJOWDmRj8Q";

  // VOD HLS content source and video IDs.
  private static final String TEST_HLS_CONTENT_SOURCE_ID = "2548831";
  private static final String TEST_HLS_VIDEO_ID = "tears-of-steel";

  // VOD DASH content source and video IDs.
  private static final String TEST_DASH_CONTENT_SOURCE_ID = "2559737";
  private static final String TEST_DASH_VIDEO_ID = "tos-dash";

  private static final String NETWORK_CODE = "21775744923";

  private static final String PLAYER_TYPE = "DAISamplePlayer";

  private enum ContentType {
    LIVE_HLS,
    LIVE_DASH,
    VOD_HLS,
    VOD_DASH,
  }

  // Set CONTENT_TYPE to the associated enum for the stream type you would like to test.
  private static final ContentType CONTENT_TYPE = ContentType.VOD_HLS;

  /** Log interface, so we can output the log commands to the UI or similar. */
  public interface Logger {
    void log(String logMessage);
  }

  private final ImaSdkFactory sdkFactory;
  private AdsLoader adsLoader;
  private StreamManager streamManager;
  private final List<VideoStreamPlayer.VideoStreamPlayerCallback> playerCallbacks;

  private final SampleVideoPlayer videoPlayer;
  private final Context context;
  private final ViewGroup adUiContainer;

  private String fallbackUrl;
  private Logger logger;

  /**
   * Creates a new SampleAdsWrapper that implements IMA direct-ad-insertion.
   *
   * @param context the app's context.
   * @param videoPlayer underlying HLS video player.
   * @param adUiContainer ViewGroup in which to display the ad's UI.
   */
  public SampleAdsWrapper(Context context, SampleVideoPlayer videoPlayer, ViewGroup adUiContainer) {
    this.videoPlayer = videoPlayer;
    this.context = context;
    this.adUiContainer = adUiContainer;
    sdkFactory = ImaSdkFactory.getInstance();
    playerCallbacks = new ArrayList<>();
    createAdsLoader();
  }

  private void enableWebViewDebugging() {
    WebView.setWebContentsDebuggingEnabled(true);
  }

  private void createAdsLoader() {
    enableWebViewDebugging();
    VideoStreamPlayer videoStreamPlayer = createVideoStreamPlayer();
    StreamDisplayContainer displayContainer =
        ImaSdkFactory.createStreamDisplayContainer(adUiContainer, videoStreamPlayer);
    videoPlayer.setSampleVideoPlayerCallback(createSampleVideoPlayerCallback());
    adsLoader =
        sdkFactory.createAdsLoader(context, MyActivity.getImaSdkSettings(), displayContainer);
  }

  public void requestAndPlayAds() {
    adsLoader.addAdErrorListener(this);
    adsLoader.addAdsLoadedListener(this);
    adsLoader.requestStream(buildStreamRequest());
  }
SampleAdsWrapper.java

Create a createSampleVideoPlayerCallback() helper method to handle creating a SampleVideoPlayerCallback interface instance which extends VideoStreamPlayer.VideoStreamPlayerCallback.

To work with DAI, the player must pass ID3 events for livestreams to the IMA DAI SDK. The callback.onUserTextReceived() method does this, in the following sample code.

videoplayerapp/SampleAdsWrapper.java

private SampleVideoPlayerCallback createSampleVideoPlayerCallback() {
  return new SampleVideoPlayerCallback() {
    @Override
    public void onUserTextReceived(String userText) {
      for (VideoStreamPlayer.VideoStreamPlayerCallback callback : playerCallbacks) {
        callback.onUserTextReceived(userText);
      }
    }

    @Override
    public void onSeek(int windowIndex, long positionMs) {
      // See if we would seek past an ad, and if so, jump back to it.
      long newSeekPositionMs = positionMs;
      if (streamManager != null) {
        CuePoint prevCuePoint = streamManager.getPreviousCuePointForStreamTimeMs(positionMs);
        if (prevCuePoint != null && !prevCuePoint.isPlayed()) {
          newSeekPositionMs = prevCuePoint.getStartTimeMs();
        }
      }
      videoPlayer.seekTo(windowIndex, newSeekPositionMs);
    }

    @Override
    public void onContentComplete() {
      for (VideoStreamPlayer.VideoStreamPlayerCallback callback : playerCallbacks) {
        callback.onContentComplete();
      }
    }

    @Override
    public void onPause() {
      for (VideoStreamPlayer.VideoStreamPlayerCallback callback : playerCallbacks) {
        callback.onPause();
      }
    }

    @Override
    public void onResume() {
      for (VideoStreamPlayer.VideoStreamPlayerCallback callback : playerCallbacks) {
        callback.onResume();
      }
    }

    @Override
    public void onVolumeChanged(int percentage) {
      for (VideoStreamPlayer.VideoStreamPlayerCallback callback : playerCallbacks) {
        callback.onVolumeChanged(percentage);
      }
    }
  };
}
SampleAdsWrapper.java

Add a buildStreamRequest() method to create the SteamRequest. This method switches between different streams based on how you set the CONTENT_TYPE variable. The default stream used in this guide is IMA's sample VOD HLS stream.

videoplayerapp/SampleAdsWrapper.java

@Nullable
private StreamRequest buildStreamRequest() {
  StreamRequest request;
  switch (CONTENT_TYPE) {
    case LIVE_HLS:
      // Live HLS stream request.
      return sdkFactory.createLiveStreamRequest(TEST_HLS_ASSET_KEY, null, NETWORK_CODE);
    case LIVE_DASH:
      // Live DASH stream request.
      return sdkFactory.createLiveStreamRequest(TEST_DASH_ASSET_KEY, null, NETWORK_CODE);
    case VOD_HLS:
      // VOD HLS request.
      request =
          sdkFactory.createVodStreamRequest(
              TEST_HLS_CONTENT_SOURCE_ID, TEST_HLS_VIDEO_ID, null, NETWORK_CODE);
      request.setFormat(StreamFormat.HLS);
      return request;
    case VOD_DASH:
      // VOD DASH request.
      request =
          sdkFactory.createVodStreamRequest(
              TEST_DASH_CONTENT_SOURCE_ID, TEST_DASH_VIDEO_ID, null, NETWORK_CODE);
      request.setFormat(StreamFormat.DASH);
      return request;
  }
  // Content type not selected.
  return null;
}
SampleAdsWrapper.java

You also need a VideoStreamPlayer to play the stream, so add a createVideoStreamPlayer() method, which creates an anonymous class that implements VideoStreamPlayer.

videoplayerapp/SampleAdsWrapper.java

private VideoStreamPlayer createVideoStreamPlayer() {
  return new VideoStreamPlayer() {
    @Override
    public void loadUrl(String url, List<HashMap<String, String>> subtitles) {
      videoPlayer.setStreamUrl(url);
      videoPlayer.play();
    }

    @Override
    public void pause() {
      // Pause player.
      videoPlayer.pause();
    }

    @Override
    public void resume() {
      // Resume player.
      videoPlayer.play();
    }

    @Override
    public int getVolume() {
      // Make the video player play at the current device volume.
      return 100;
    }

    @Override
    public void addCallback(VideoStreamPlayerCallback videoStreamPlayerCallback) {
      playerCallbacks.add(videoStreamPlayerCallback);
    }

    @Override
    public void removeCallback(VideoStreamPlayerCallback videoStreamPlayerCallback) {
      playerCallbacks.remove(videoStreamPlayerCallback);
    }

    @Override
    public void onAdBreakStarted() {
      // Disable player controls.
      videoPlayer.enableControls(false);
      log("Ad Break Started\n");
    }

    @Override
    public void onAdBreakEnded() {
      // Re-enable player controls.
      if (videoPlayer != null) {
        videoPlayer.enableControls(true);
      }
      log("Ad Break Ended\n");
    }

    @Override
    public void onAdPeriodStarted() {
      log("Ad Period Started\n");
    }

    @Override
    public void onAdPeriodEnded() {
      log("Ad Period Ended\n");
    }

    @Override
    public void seek(long timeMs) {
      // An ad was skipped. Skip to the content time.
      videoPlayer.seekTo(timeMs);
      log("seek");
    }

    @Override
    public VideoProgressUpdate getContentProgress() {
      return new VideoProgressUpdate(
          videoPlayer.getCurrentPositionMs(), videoPlayer.getDuration());
    }
  };
}
SampleAdsWrapper.java

Implement the required listeners and add support for error handling.

Note the AdErrorListener implementation, as it calls a fallback URL if the ads fail to play. Since the content and ads are in one stream, you must be ready to call a fallback stream if the DAI stream encounters an error.

videoplayerapp/SampleAdsWrapper.java

/** AdErrorListener implementation */
@Override
public void onAdError(AdErrorEvent event) {
  log(String.format("Error: %s\n", event.getError().getMessage()));
  // play fallback URL.
  log("Playing fallback Url\n");
  videoPlayer.setStreamUrl(fallbackUrl);
  videoPlayer.enableControls(true);
  videoPlayer.play();
}

/** AdEventListener implementation */
@Override
public void onAdEvent(AdEvent event) {
  switch (event.getType()) {
    case AD_PROGRESS:
      // Do nothing or else log will be filled by these messages.
      break;
    default:
      log(String.format("Event: %s\n", event.getType()));
      break;
  }
}

/** AdsLoadedListener implementation */
@Override
public void onAdsManagerLoaded(AdsManagerLoadedEvent event) {
  streamManager = event.getStreamManager();
  streamManager.addAdErrorListener(this);
  streamManager.addAdEventListener(this);
  streamManager.init();
}

/** Sets fallback URL in case ads stream fails. */
void setFallbackUrl(String url) {
  fallbackUrl = url;
}
SampleAdsWrapper.java

Add in code for logging.

videoplayerapp/SampleAdsWrapper.java

/** Sets logger for displaying events to screen. Optional. */
void setLogger(Logger logger) {
  this.logger = logger;
}

private void log(String message) {
  if (logger != null) {
    logger.log(message);
  }
}SampleAdsWrapper.java

Modify MyActivity in videoplayerapp to instantiate and call SampleAdsWrapper. Also, make a call to ImaSdkFactory.initialize() here using a helper method to create an ImaSdkSettings instance.

Important: To improve IMA load times, call the ImaSdkFactory.initialize() method as early as possible in the app lifecycle. Calling the method early maximizes the time for IMA to load necessary resources before the first stream request. The ImaSdkFactory.initialize() method call accepts an ImaSdkSettings instance. Make sure to use the same settings values here, and when you create an AdsLoader instance. This example uses the getImaSdkSettings() helper method to ensure the settings values are the same. For more information, see the Optimize IMA load time guide>.

videoplayerapp/MyActivity.java

package com.google.ads.interactivemedia.v3.samples.videoplayerapp;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.res.Configuration;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ImageButton;
import android.widget.ScrollView;
import android.widget.TextView;
import com.google.ads.interactivemedia.v3.api.ImaSdkFactory;
import com.google.ads.interactivemedia.v3.api.ImaSdkSettings;
import com.google.ads.interactivemedia.v3.samples.samplevideoplayer.SampleVideoPlayer;

/** Main Activity that plays media using {@link SampleVideoPlayer}. */
@SuppressLint("UnsafeOptInUsageError")
/* @SuppressLint is needed for new media3 APIs. */
public class MyActivity extends Activity {

  private static final String DEFAULT_STREAM_URL =
      "https://storage.googleapis.com/interactive-media-ads/media/bbb.m3u8";
  private static final String APP_LOG_TAG = "ImaDaiExample";
  private static final String PLAYER_TYPE = "DAISamplePlayer";
  private static ImaSdkSettings imaSdkSettings;

  protected SampleVideoPlayer sampleVideoPlayer;
  protected ImageButton playButton;

  private boolean contentHasStarted = false;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_my);

    // Initialize the IMA SDK as early as possible when the app starts. If your app already
    // overrides Application.onCreate(), call this method inside the onCreate() method.
    // https://developer.android.com/topic/performance/vitals/launch-time#app-creation
    ImaSdkFactory.getInstance().initialize(this, getImaSdkSettings());

    View rootView = findViewById(R.id.videoLayout);
    sampleVideoPlayer =
        new SampleVideoPlayer(rootView.getContext(), rootView.findViewById(R.id.playerView));
    sampleVideoPlayer.enableControls(false);
    playButton = rootView.findViewById(R.id.playButton);
    final SampleAdsWrapper sampleAdsWrapper =
        new SampleAdsWrapper(this, sampleVideoPlayer, rootView.findViewById(R.id.adUiContainer));
    sampleAdsWrapper.setFallbackUrl(DEFAULT_STREAM_URL);

    final ScrollView scrollView = findViewById(R.id.logScroll);
    final TextView textView = findViewById(R.id.logText);

    sampleAdsWrapper.setLogger(
        logMessage -> {
          Log.i(APP_LOG_TAG, logMessage);
          if (textView != null) {
            textView.append(logMessage);
          }
          if (scrollView != null) {
            scrollView.post(() -> scrollView.fullScroll(View.FOCUS_DOWN));
          }
        });

    // Set up play button listener to play video then hide play button.
    playButton.setOnClickListener(
        view -> {
          if (contentHasStarted) {
            sampleVideoPlayer.play();
          } else {
            contentHasStarted = true;
            sampleVideoPlayer.enableControls(true);
            sampleAdsWrapper.requestAndPlayAds();
          }
          playButton.setVisibility(View.GONE);
        });
    orientVideoDescription(getResources().getConfiguration().orientation);
  }
MyActivity.java

Add the getImaSdkSettings() helper method to create an ImaSdkSettings instance.

videoplayerapp/MyActivity.java

public static ImaSdkSettings getImaSdkSettings() {
  if (imaSdkSettings == null) {
    imaSdkSettings = ImaSdkFactory.getInstance().createImaSdkSettings();
    imaSdkSettings.setPlayerType(PLAYER_TYPE);
    // Set any additional IMA SDK settings here.
  }
  return imaSdkSettings;
}MyActivity.java

Modify the Activity's layout file activity_my.xml to add UI elements for logging.

res/layout/activity_my.xml

<!-- UI element for viewing SDK event log -->
<ScrollView
    android:id="@+id/logScroll"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="0.5"
    android:padding="5dp"
    android:background="#DDDDDD">

    <TextView
        android:id="@+id/logText"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
    </TextView>
</ScrollView>activity_my.xml

Congrats! You're now requesting and displaying video ads in your Android app. To fine tune your implementation, see Bookmarks, Snapback, and the API documentation.

Troubleshooting

If you're experiencing issues playing a video ad, try downloading the completed BasicExample. If it works properly in the BasicExample then there's likely an issue with your app's IMA integration code.

If you're still having issues, visit the IMA SDK forum.

Set up the IMA SDK for DAI Stay organized with collections Save and categorize content based on your preferences.

Full service DAI

IMA DAI overview

Prerequisites

Download and run the sample video player app

Examine the sample video player

Add the IMA DAI SDK to the player app

Integrate the IMA DAI SDK

Troubleshooting

Set up the IMA SDK for DAI
Stay organized with collections Save and categorize content based on your preferences.