Accepted for asynchronous verification - HTTP/1.1 202 Accepted
Successful empty response - HTTP/1.1 204 No Content
Media verification not found - HTTP/1.1 404 Not Found
Media verification sent by someone else - HTTP/1.1 409 Conflict
[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["没有我需要的信息","missingTheInformationINeed","thumb-down"],["太复杂/步骤太多","tooComplicatedTooManySteps","thumb-down"],["内容需要更新","outOfDate","thumb-down"],["翻译问题","translationIssue","thumb-down"],["示例/代码问题","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC)：2025-08-21。"],[[["\u003cp\u003eThe Google DAI API enables Google DAI streams on platforms where the IMA SDK isn't supported, but IMA is still recommended where it's available.\u003c/p\u003e\n"],["\u003cp\u003eThe DAI API, supporting VOD streams with HLS and DASH protocols, is recommended for platforms like Samsung Smart TV, LG TV, HbbTV, Xbox (Javascript apps), and KaiOS.\u003c/p\u003e\n"],["\u003cp\u003eImplementing the DAI API involves requesting a stream, parsing the response, performing media verification using ID3 events, and optionally utilizing \u003ccode\u003ead_breaks\u003c/code\u003e data for event lookup.\u003c/p\u003e\n"],["\u003cp\u003eWhile using the API in webviews has limitations affecting targeting and device ID passing, it's best practice to utilize \u003ccode\u003ead_breaks\u003c/code\u003e data for event identification in VOD.\u003c/p\u003e\n"]]],[],null,["The Google DAI API lets you implement Google DAI-enabled streams in environments\nwhere implementing the IMA SDK is not supported. We recommend that you still use\nIMA on platforms where the IMA SDK is supported.\n\nWe recommend using the DAI API on the following platforms:\n\n- Samsung Smart TV (Tizen)\n- LG TV\n- HbbTV\n- Xbox (Javascript apps)\n- KaiOS\n\nThe API supports the basic features provided by the IMA DAI SDK. For specific\nquestions about compatibility or supported features, reach out to your Google\naccount manager.\n\nImplement the DAI API for VOD streams\n\nThe DAI API supports VOD streams using both HLS and DASH protocols. The steps\ndescribed in this guide apply to both protocols.\n\nTo integrate the API into your application for VOD streams, complete the\nfollowing steps:\n\n1. Request a stream by making a POST call to the stream endpoint:\n\n **Example request body:** \n\n https://dai.google.com/ondemand/v1/dash/content/2559737/vid/tos-dash/stream\n\n {\n key1 : \"value1\",\n stream_parameter1 : \"value2\"\n }\n\n | **Note:** `api_key` can be supplied using the `Authorization` HTTP header.\n\n **Example response body:** \n\n {\n \"stream_id\":\"d32f8920-612a-4d46-8bc7-d73fd6c17c85\",\n \"total_duration\":636.458,\n \"content_duration\":596.458,\n \"valid_for\":\"8h0m0s\",\n \"valid_until\":\"2020-06-04T20:39:41.274707306-07:00\",\n \"stream_manifest\":\"https://dai.google.com/ondemand/dash/content/2559737/vid/tos-dash/ATL/streams/d32f8920-612a-4d46-8bc7-d73fd6c17c85/manifest.mpd\",\n \"media_verification_url\":\"https://dai.google.com/view/p/service/vod/stream/d32f8920-612a-4d46-8bc7-d73fd6c17c85/loc/ATL/network/124319096/content/2559737/vid/tos-dash/media/\",\n \"ad_breaks\":[\n {\n \"type\":\"pre\",\n \"start\":0,\n \"duration\":10,\n \"ads\":[\n {\n \"seq\":1,\n \"duration\":10,\n \"title\":\"External NCA1C1L1 Preroll\",\n \"description\":\"External NCA1C1L1 Preroll ad\",\n \"clickthrough_url\":\"https://dai.google.com/ondemand/v1/dash/content/2474148/vid/bbb-clear/location/ATL/stream/d32f8920-612a-4d46-8bc7-d73fd6c17c85/videoclick/5489259204425938365\",\n \"events\":[\n {\n \"time\":0.1,\n \"type\":\"start\"\n },\n {\n \"time\":2.5,\n \"type\":\"firstquartile\"\n },\n {\n \"time\":4.75,\n \"type\":\"midpoint\"\n },\n {\n \"time\":7.5,\n \"type\":\"thirdquartile\"\n },\n {\n \"time\":9,\n \"type\":\"complete\"\n }\n ]\n }\n ]\n },\n {\n \"type\":\"mid\",\n \"start\":45,\n \"duration\":10,\n \"ads\":[\n {.... }\n ]\n }\n ]\n },\n {\n \"type\":\"post\",\n \"start\":626.458,\n \"duration\":10,\n \"ads\":[...]\n }\n ]\n }\n\n **Error Response**\n\n In case of errors, standard HTTP error codes are returned with no JSON\n response body.\n2. Parse the JSON response and store the following values:\n\n - `stream_id`\n - `stream_manifest`\n - `media_verification_url`\n - `ad_breaks`\n3. To perform media verification, listen for ID3 events:\n\n 1. Store the media events in a queue, saving each media ID along with its timestamp (if surfaced by the player).\n 2. On each time update from the player, or at a set frequency (recommended 500ms), check the media events queue for recently played events by comparing the event timestamps to the playhead.\n 3. For media events that you confirm have played, track the playback by appending the media ID to the media verification endpoint and making a GET request.\n\n **Example request body:** \n\n https://dai.google.com/view/p/service/linear/stream/c6bbee18-0d20-4c55-b071-efdf3a81da33:ATL/loc/ATL/network/51636543/event/0ndl1dJcRmKDUPxTRjvdog/media/\n\n **Example responses:** \n\n Accepted for asynchronous verification - HTTP/1.1 202 Accepted\n Successful empty response - HTTP/1.1 204 No Content\n Media verification not found - HTTP/1.1 404 Not Found\n Media verification sent by someone else - HTTP/1.1 409 Conflict\n\n You can verify tracking events in [Stream Activity\n Monitor](//support.google.com/admanager/answer/7009058).\n4. Optional: Use the `ad_breaks` data from the stream create response to look\n up what type of event was fired.\n\n5. Remove the media event from the queue.\n\nLimitations\n\nIf using the API within webviews, the following limitations apply with respect\nto targeting:\n\n- UserAgent: The user agent parameter is passed as browser specific value instead of the underlying platform.\n- [`rdid`](//support.google.com/admanager/answer/7320899), [`idtype`](//support.google.com/admanager/answer/7320899), [`is_lat`](//support.google.com/admanager/answer/7320899): The device ID is not properly passed, which limits the following features:\n - Frequency capping\n - Sequential ad rotation\n - Audience segmentation and targeting\n\nBest practices\n\nMapping ID3 tags to the appropriate event type is tedious on VOD. Use the\nreturned `ad_breaks` information in the JSON to look up the event directly, like\nyou would with live content.\n\nAdditional resources\n\n- [API reference\n documentation](/ad-manager/dynamic-ad-insertion/api/full-service/reference/vod)\n- [Simple sample](//github.com/googleads/googleads-dynamic-ad-insertion/tree/master/simple/VOD)\n- [IMA SDK documentation](/interactive-media-ads)\n- [DAI layer implementation types comparison](//support.google.com/admanager/answer/9840889)"]]
