我們正在更新 Data API，以符合 YouTube 計算 Shorts 觀看次數的方式。
瞭解詳情
實作：字幕
透過集合功能整理內容
你可以依據偏好儲存及分類內容。
以下範例說明如何使用 YouTube Data API (第 3 版) 執行與字幕相關的功能。
擷取影片的字幕軌清單
建立字幕軌
這個查詢無法使用 APIs Explorer 進行測試，因為 APIs Explorer 不支援上傳檔案，而這是這個方法的必要條件。
您可以使用 API 的 captions.insert 方法，為影片上傳新的字幕群組。上傳曲目時，請務必為下列 caption 資源屬性指定值：
上傳字幕音軌時，可使用下列其他選項：
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如果將 sync 參數設為 true，YouTube 就會忽略上傳字幕檔中的任何時間碼，並為字幕產生新的時間碼。
如果上傳的字幕沒有時間碼，或是你懷疑檔案中的時間碼有誤，並希望 YouTube 嘗試修正，應將 sync 參數設為 true。
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如果將 caption 資源的 snippet.isDraft 屬性設為 true，則曲目不會公開顯示。
如需程式碼範例，請參閱 captions.insert 方法的說明文件。
下載字幕軌
這項查詢無法使用 APIs Explorer 進行測試，因為 APIs Explorer 不支援下載檔案。
如要下載特定字幕音軌，請呼叫 captions.download 方法。將 id 參數值設為 YouTube 字幕音軌 ID，這個 ID 可用來識別你要下載的字幕音軌。您的要求必須使用 OAuth 2.0 授權。
v3 API 支援下列選項：
如需程式碼範例，請參閱 captions.download 方法的說明文件。
更新字幕軌
刪除字幕軌
以下範例說明如何刪除字幕音軌。這個範例包含以下步驟：
除非另有註明，否則本頁面中的內容是採用創用 CC 姓名標示 4.0 授權，程式碼範例則為阿帕契 2.0 授權。詳情請參閱《Google Developers 網站政策》。Java 是 Oracle 和/或其關聯企業的註冊商標。
上次更新時間：2024-11-23 (世界標準時間)。
[null,null,["上次更新時間：2024-11-23 (世界標準時間)。"],[[["\u003cp\u003eThis document provides instructions on how to use the YouTube Data API (v3) to manage video captions.\u003c/p\u003e\n"],["\u003cp\u003eYou can retrieve a list of caption tracks for a specific video using the \u003ccode\u003ecaptions.list\u003c/code\u003e method, requiring OAuth 2.0 authorization.\u003c/p\u003e\n"],["\u003cp\u003eUploading a new caption track to a video is achieved using the \u003ccode\u003ecaptions.insert\u003c/code\u003e method, requiring the \u003ccode\u003esnippet.videoId\u003c/code\u003e, \u003ccode\u003esnippet.language\u003c/code\u003e, and \u003ccode\u003esnippet.name\u003c/code\u003e properties to be set.\u003c/p\u003e\n"],["\u003cp\u003eDownloading a specific caption track is possible via the \u003ccode\u003ecaptions.download\u003c/code\u003e method, including options to specify the desired format and retrieve a translated version.\u003c/p\u003e\n"],["\u003cp\u003eThe API allows for updating a caption track's draft status and even deleting it completely using the \u003ccode\u003ecaptions.update\u003c/code\u003e and \u003ccode\u003ecaptions.delete\u003c/code\u003e methods respectively.\u003c/p\u003e\n"]]],["The YouTube Data API (v3) facilitates caption management. Key actions include: retrieving caption track lists for a video via `captions.list`; creating new tracks with `captions.insert`, specifying video ID, language, and name; downloading tracks with `captions.download`, allowing format and language selection; updating track status or file with `captions.update`; and deleting tracks using `captions.delete` after retrieving the track ID. Uploading caption files cannot be tested in the APIs Explorer.\n"],null,["# Implementation: Captions\n\nThe following examples show how to use the YouTube Data API (v3) to perform functions related to captions.\n\nRetrieve a list of caption tracks for a video\n---------------------------------------------\n\nTo retrieve a list of caption tracks that are available for a specific video, call the [captions.list](/youtube/v3/docs/captions/list) method. Set the [videoId](/youtube/v3/docs/captions/list#videoId) parameter value to the YouTube video ID that uniquely identifies the video for which you are retrieving captions. Your request must be authorized using OAuth 2.0.\n\nThe request below retrieves a list of captions for a video on the Google Stories YouTube channel: \n\n```\nhttps://developers.google.com/apis-explorer/#p/youtube/v3/youtube.captions.list?\npart=snippet\n&videoId=PRU2ShMzQRg\n```\n\nSee the [captions.list](/youtube/v3/docs/captions/list#usage) method's documentation for code samples.\n\nCreate a caption track\n----------------------\n\nThis query cannot be tested using the APIs Explorer because the APIs Explorer does not support the ability to upload files, which is a requirement for this method.\n\nYou can use the API's [captions.insert](/youtube/v3/docs/captions/insert) method to upload a new caption track for a video. When uploading a track, you must specify a value for the following `caption` resource properties:\n\n\u003cbr /\u003e\n\n- [snippet.videoId](/youtube/v3/docs/captions#snippet.videoId) - This identifies the video to which the caption track is being added.\n- [snippet.language](/youtube/v3/docs/captions#snippet.language) - The language of the caption track.\n- [snippet.name](/youtube/v3/docs/captions#snippet.name) - The name of the caption track.\n\n\u003cbr /\u003e\n\nThe following additional options are available when uploading a caption track:\n\n- If you set the [sync](/youtube/v3/docs/captions/insert#sync) parameter to `true`, YouTube will disregard any time codes that are in the uploaded caption file and generate new time codes for the captions.\n\n You should set the [sync](/youtube/v3/docs/captions/insert#sync) parameter to `true` if you are uploading a transcript, which has no time codes, or if you suspect the time codes in your file are incorrect and want YouTube to try to fix them.\n- If you set the `caption` resource's [snippet.isDraft](/youtube/v3/docs/captions#snippet.isDraft) property to `true`, the track will not be publicly visible.\n\nSee the [captions.insert](/youtube/v3/docs/captions/insert#examples) method's documentation for code samples.\n\nDownload a caption track\n------------------------\n\nThis query cannot be tested using the APIs Explorer because the APIs Explorer does not support the ability to download files.\n\nTo download a specific caption track, call the [captions.download](/youtube/v3/docs/captions/download) method. Set the [id](/youtube/v3/docs/captions/download#id) parameter value to the YouTube caption track ID that uniquely identifies the caption track that you are downloading. Your request must be authorized using OAuth 2.0.\n\nThe v3 API supports the following options:\n\n- To specify that a caption track should be returned in a specific format, set the [tfmt](/youtube/v3/docs/captions/download#tfmt) parameter value to identify the desired format. The parameter definition lists supported values.\n\n- To retrieve a translation of a caption track, set the [tlang](/youtube/v3/docs/captions/download#tlang) parameter value to an [ISO 639-1 two-letter language code](http://www.loc.gov/standards/iso639-2/php/code_list.php) that identifies the desired caption language. The translation is generated by using machine translation, such as Google Translate.\n\nSee the [captions.download](/youtube/v3/docs/captions/download#examples) method's documentation for code samples.\n\nUpdate a caption track\n----------------------\n\nThe API supports the ability to change a caption track's [draft status](/youtube/v3/docs/captions#snippet.isDraft), upload a new caption track for a file, or both.\n\nYou can use the APIs Explorer to test the ability to change a track's draft status. However, you cannot use the APIs Explorer to update the actual caption track because tool does not support the ability to upload files.\n\nThe request below retrieves a list of captions for a video on the Google Stories YouTube channel:\n\nThe request updates the draft status of a caption track to `true`, which means the track will not be publicly visible. To complete the request in the APIs Explorer, you need to set the `id` property's value to identify a caption track. \n\n```\nhttps://developers.google.com/apis-explorer/#p/youtube/v3/youtube.captions.update?\npart=snippet\n```\n\nSee the [captions.update](/youtube/v3/docs/captions/update#usage) method's documentation for code samples.\n\nDelete a caption track\n----------------------\n\nThis example shows how to delete a caption track. The example has the following steps:\n\n- **Step 1: Retrieve the caption track ID**\n\n Follow the steps above to [retrieve a list of caption tracks](#captions-list) for a video. The list could be used to display a list of caption tracks, using each track's ID as a key.\n- **Step 2: Delete the track**\n\n Call the [captions.delete](/youtube/v3/docs/captions/delete) method to delete a specific video. In the request, the `id` parameter specifies the caption track ID of the track that you are deleting. The request must be authorized using OAuth 2.0. If you are testing this query in the APIs Explorer, you will need to substitute a valid caption track ID for the `id` parameter value. \n\n ```\n https://developers.google.com/apis-explorer/#p/youtube/v3/youtube.captions.delete?\n id=CAPTION_TRACK_ID\n ```"]]
