Caricare gli annunci pre-roll per il live streaming
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L'SDK IMA può essere utilizzato per monetizzare i live streaming e i video on demand.
Per i live streaming, devi effettuare una nuova richiesta di annuncio per ogni interruzione pubblicitaria.
Distribuite queste richieste in più scaglioni per evitare che tutti gli spettatori lo facciano
contemporaneamente gli annunci e il traffico degli ad server.
Per aiutarti, l'SDK IMA include l'AdsRequest.liveStreamPrefetchSeconds
proprietà. Questa proprietà specifica il numero massimo di secondi in cui l'SDK
devi attendere prima di contattare l'ad server dopo la chiamata
AdsLoader.requestAds(). L'ora effettiva della richiesta verrà casuale. Per
Ad esempio, se imposti AdsRequest.liveStreamPrefetchSeconds su 30, l'SDK
attende da 0 a 30 secondi dopo la chiamata a AdsLoader.requestAds() per
inviare la richiesta al server.
Precaricamento del live streaming in pratica
Ti consigliamo di precaricare la tua prossima interruzione pubblicitaria non appena viene completata.
In questo modo ti assicuri che sia disponibile il periodo di tempo massimo per la finestra di precaricamento.
Supponiamo che trascorri 5 minuti tra un'interruzione pubblicitaria e l'altra. Quando viene completata
un'interruzione pubblicitaria,
puoi richiedere la prossima interruzione pubblicitaria con una finestra di precaricamento di 290 secondi
(5 minuti meno 10 secondi, per garantire che le richieste inviate alla fine
la finestra di precaricamento abbia tempo sufficiente per risolversi):
Questi snippet di codice mostrano come aggiungere il precaricamento del live streaming al
Esempio avanzato
, ma può essere applicato ad altre implementazioni IMA.
VideoPlayerController.java
/**AdslogicforhandlingtheIMASDKintegrationcodeandevents.*/publicclassVideoPlayerController{//5minutes==300seconds.Includea10secondbufferprivatefloatAD_INTERVAL=290;privatedoubleAD_TIMEOUT=300;...adsManager.addAdEventListener(newAdEvent.AdEventListener(){/**RespondstoAdEvents.*/@OverridepublicvoidonAdEvent(AdEventadEvent){...caseALL_ADS_COMPLETED:if(adsManager!=null){adsManager.destroy();adsManager=null;}//Whenpre-fetchingforlivestreams,besuretodestroythecurrentAdsManager,//incasethetagyourequestedpreviouslycontainspost-rolls//(youdon't want to play those now).//Pre-fetchthenextadbreak.//Playthoseadsin~5minutes.Inareal-worldimplementation,//thiswilllikelybedoneastheresultofamessagefromyour//streamingserver,notaviatheplayAdsAfterThisTimeparameter//ofrequestAndPlayAds().requestAndPlayAds(AD_TIMEOUT);break;default:break;}}...publicvoidrequestAndPlayAds(doubleplayAdsAfterThisTime){if(currentAdTagUrl==null||currentAdTagUrl==""){log("No VAST ad tag URL specified");resumeContent();return;}//Sinceyou're switching to a new video, tell the SDK the previous video is finished.if(adsManager!=null){adsManager.destroy();}playButton.setVisibility(View.GONE);//Createtheadsrequest.AdsRequestrequest=sdkFactory.createAdsRequest();request.setAdTagUrl(currentAdTagUrl);request.setContentProgressProvider(videoPlayerWithAdPlayback.getContentProgressProvider());request.setLiveStreamPrefetchSeconds(AD_INTERVAL);playAdsAfterTime=playAdsAfterThisTime;//Requestthead.Aftertheadisloaded,onAdsManagerLoaded()willbecalled.adsLoader.requestAds(request);}
[null,null,["Ultimo aggiornamento 2025-08-01 UTC."],[[["\u003cp\u003eThe IMA SDK supports monetizing live streams and video-on-demand content through ad integration.\u003c/p\u003e\n"],["\u003cp\u003eFor live streams, stagger ad requests to avoid overloading ad servers by utilizing the \u003ccode\u003eAdsRequest.liveStreamPrefetchSeconds\u003c/code\u003e property for pre-fetching.\u003c/p\u003e\n"],["\u003cp\u003eIt's recommended to pre-fetch the next ad break immediately after the current one finishes, maximizing the pre-fetch window for smoother ad transitions.\u003c/p\u003e\n"],["\u003cp\u003eThe provided code snippets demonstrate how to implement live stream pre-fetching within the Advanced Example, showcasing the integration with the IMA SDK.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eAdsRequest.liveStreamPrefetchSeconds\u003c/code\u003e property randomizes the actual request time within the specified maximum duration to further optimize ad delivery.\u003c/p\u003e\n"]]],[],null,["# Load pre-roll ads for livestream\n\nThe IMA SDK can be used to monetize live streams as well as video-on-demand.\nFor live streams, you need to make a new ad request for each ad break.\nStagger these requests to ensure that all of your viewers aren't requesting\nads at the same time and bogging down the ad server(s).\n\nTo help with this, the IMA SDK has the `AdsRequest.liveStreamPrefetchSeconds`\nproperty. This property specifies the maximum number of seconds the SDK\nshould wait before reaching out to the ad server after you call\n`AdsLoader.requestAds()`. The actual request time will be randomized. For\nexample, if you set `AdsRequest.liveStreamPrefetchSeconds` to 30, the SDK\nwaits 0 to 30 seconds after you call `AdsLoader.requestAds()` to actually\nmake the request to the server.\n\nLive stream pre-fetch in practice\n---------------------------------\n\nWe recommend pre-fetching your next ad break as soon as an ad break completes.\nThis ensures the maximum length of time is available for your pre-fetch window.\nSuppose you have 5 minutes between ad breaks. When an ad break completes,\nyou can request your next ad break with a pre-fetch window of 290 seconds\n(5 minutes minus 10 seconds, to make sure the requests sent at the end of\nthe pre-fetch window have enough time to resolve):\n| **Key Point:** The [Getting started guide](/interactive-media-ads/docs/sdks/android/client-side) and the [Basic Example](//github.com/googleads/googleads-ima-android/tree/main/basicexample) both implement the [Exoplayer-IMA extension](//github.com/google/ExoPlayer/tree/release-v2/extensions/ima) which handles the setup of the AdsManager. Because of this, these resources are not able to be used as a starting point for this guide. We recommend using the [Advanced Example](//github.com/googleads/googleads-ima-android/tree/main/AdvancedExample) as a starting point for live stream pre-fetch.\n\nThese code snippets show how to add live stream pre-fetch to the\n[Advanced Example](//github.com/googleads/googleads-ima-android/tree/main/AdvancedExample)\n, but the approach can applied to other IMA implementations.\n\n**VideoPlayerController.java** \n\n```gdscript\n/** Ads logic for handling the IMA SDK integration code and events. */\npublic class VideoPlayerController {\n\n // 5 minutes == 300 seconds. Include a 10 second buffer\n private float AD_INTERVAL = 290;\n private double AD_TIMEOUT = 300;\n\n...\n\n adsManager.addAdEventListener(\n new AdEvent.AdEventListener() {\n /** Responds to AdEvents. */\n @Override\n public void onAdEvent(AdEvent adEvent) {\n\n ...\n\n case ALL_ADS_COMPLETED:\n if (adsManager != null) {\n adsManager.destroy();\n adsManager = null;\n }\n\n // When pre-fetching for live streams, be sure to destroy the current AdsManager,\n // in case the tag you requested previously contains post-rolls\n // (you don't want to play those now).\n\n // Pre-fetch the next ad break.\n // Play those ads in ~5 minutes. In a real-world implementation,\n // this will likely be done as the result of a message from your\n // streaming server, not a via the playAdsAfterThisTime parameter\n // of requestAndPlayAds().\n requestAndPlayAds(AD_TIMEOUT);\n break;\n default:\n break;\n }\n }\n\n...\n\npublic void requestAndPlayAds(double playAdsAfterThisTime) {\n if (currentAdTagUrl == null || currentAdTagUrl == \"\") {\n log(\"No VAST ad tag URL specified\");\n resumeContent();\n return;\n }\n\n // Since you're switching to a new video, tell the SDK the previous video is finished.\n if (adsManager != null) {\n adsManager.destroy();\n }\n\n playButton.setVisibility(View.GONE);\n\n // Create the ads request.\n AdsRequest request = sdkFactory.createAdsRequest();\n request.setAdTagUrl(currentAdTagUrl);\n request.setContentProgressProvider(videoPlayerWithAdPlayback.getContentProgressProvider());\n request.setLiveStreamPrefetchSeconds(AD_INTERVAL);\n\n playAdsAfterTime = playAdsAfterThisTime;\n\n // Request the ad. After the ad is loaded, onAdsManagerLoaded() will be called.\n adsLoader.requestAds(request);\n}\n```"]]