使用Javascript在Youtube APi中上传视频 [英] Video Upload In Youtube APi using Javascript

问题描述

我需要使用APi将视频上传到youtube。是否可以在Youtube API中使用？

I need to upload video to youtube using APi.Is it possible in Youtube API?

请举一个例子

推荐答案

此示例直接来自官方YouTube数据API文档，并显示如何执行以下功能：

This example is taken directly from the official YouTube Data API documentation, and shows how to perform the following functions:

1. 它检索频道名称和缩略图使用API​​的channels.list方法验证用户的频道。


2. 它使用可恢复的上传协议处理上传到YouTube的视频。


3. 它民意调查通过将part参数值设置为status，使用API​​的videos.list方法上传视频的上传和处理状态。

使用< a href =https://github.com/google/google-api-javascript-client =noreferrer> Javascript客户端API ：

/*
Copyright 2015 Google Inc. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

var signinCallback = function (result){
  if(result.access_token) {
    var uploadVideo = new UploadVideo();
    uploadVideo.ready(result.access_token);
  }
};

var STATUS_POLLING_INTERVAL_MILLIS = 60 * 1000; // One minute.


/**
 * YouTube video uploader class
 *
 * @constructor
 */
var UploadVideo = function() {
  /**
   * The array of tags for the new YouTube video.
   *
   * @attribute tags
   * @type Array.<string>
   * @default ['google-cors-upload']
   */
  this.tags = ['youtube-cors-upload'];

  /**
   * The numeric YouTube
   * [category id](https://developers.google.com/apis-explorer/#p/youtube/v3/youtube.videoCategories.list?part=snippet®ionCode=us).
   *
   * @attribute categoryId
   * @type number
   * @default 22
   */
  this.categoryId = 22;

  /**
   * The id of the new video.
   *
   * @attribute videoId
   * @type string
   * @default ''
   */
  this.videoId = '';

  this.uploadStartTime = 0;
};


UploadVideo.prototype.ready = function(accessToken) {
  this.accessToken = accessToken;
  this.gapi = gapi;
  this.authenticated = true;
  this.gapi.client.request({
    path: '/youtube/v3/channels',
    params: {
      part: 'snippet',
      mine: true
    },
    callback: function(response) {
      if (response.error) {
        console.log(response.error.message);
      } else {
        $('#channel-name').text(response.items[0].snippet.title);
        $('#channel-thumbnail').attr('src', response.items[0].snippet.thumbnails.default.url);

        $('.pre-sign-in').hide();
        $('.post-sign-in').show();
      }
    }.bind(this)
  });
  $('#button').on("click", this.handleUploadClicked.bind(this));
};

/**
 * Uploads a video file to YouTube.
 *
 * @method uploadFile
 * @param {object} file File object corresponding to the video to upload.
 */
UploadVideo.prototype.uploadFile = function(file) {
  var metadata = {
    snippet: {
      title: $('#title').val(),
      description: $('#description').text(),
      tags: this.tags,
      categoryId: this.categoryId
    },
    status: {
      privacyStatus: $('#privacy-status option:selected').text()
    }
  };
  var uploader = new MediaUploader({
    baseUrl: 'https://www.googleapis.com/upload/youtube/v3/videos',
    file: file,
    token: this.accessToken,
    metadata: metadata,
    params: {
      part: Object.keys(metadata).join(',')
    },
    onError: function(data) {
      var message = data;
      // Assuming the error is raised by the YouTube API, data will be
      // a JSON string with error.message set. That may not be the
      // only time onError will be raised, though.
      try {
        var errorResponse = JSON.parse(data);
        message = errorResponse.error.message;
      } finally {
        alert(message);
      }
    }.bind(this),
    onProgress: function(data) {
      var currentTime = Date.now();
      var bytesUploaded = data.loaded;
      var totalBytes = data.total;
      // The times are in millis, so we need to divide by 1000 to get seconds.
      var bytesPerSecond = bytesUploaded / ((currentTime - this.uploadStartTime) / 1000);
      var estimatedSecondsRemaining = (totalBytes - bytesUploaded) / bytesPerSecond;
      var percentageComplete = (bytesUploaded * 100) / totalBytes;

      $('#upload-progress').attr({
        value: bytesUploaded,
        max: totalBytes
      });

      $('#percent-transferred').text(percentageComplete);
      $('#bytes-transferred').text(bytesUploaded);
      $('#total-bytes').text(totalBytes);

      $('.during-upload').show();
    }.bind(this),
    onComplete: function(data) {
      var uploadResponse = JSON.parse(data);
      this.videoId = uploadResponse.id;
      $('#video-id').text(this.videoId);
      $('.post-upload').show();
      this.pollForVideoStatus();
    }.bind(this)
  });
  // This won't correspond to the *exact* start of the upload, but it should be close enough.
  this.uploadStartTime = Date.now();
  uploader.upload();
};

UploadVideo.prototype.handleUploadClicked = function() {
  $('#button').attr('disabled', true);
  this.uploadFile($('#file').get(0).files[0]);
};

UploadVideo.prototype.pollForVideoStatus = function() {
  this.gapi.client.request({
    path: '/youtube/v3/videos',
    params: {
      part: 'status,player',
      id: this.videoId
    },
    callback: function(response) {
      if (response.error) {
        // The status polling failed.
        console.log(response.error.message);
        setTimeout(this.pollForVideoStatus.bind(this), STATUS_POLLING_INTERVAL_MILLIS);
      } else {
        var uploadStatus = response.items[0].status.uploadStatus;
        switch (uploadStatus) {
          // This is a non-final status, so we need to poll again.
          case 'uploaded':
            $('#post-upload-status').append('<li>Upload status: ' + uploadStatus + '</li>');
            setTimeout(this.pollForVideoStatus.bind(this), STATUS_POLLING_INTERVAL_MILLIS);
            break;
          // The video was successfully transcoded and is available.
          case 'processed':
            $('#player').append(response.items[0].player.embedHtml);
            $('#post-upload-status').append('<li>Final status.</li>');
            break;
          // All other statuses indicate a permanent transcoding failure.
          default:
            $('#post-upload-status').append('<li>Transcoding failed.</li>');
            break;
        }
      }
    }.bind(this)
  });
};

关联的 HTML ， CSS 和 JavaScript 文件（定义MediaUploader类）。

The associated HTML, CSS and JavaScript file (defining the MediaUploader class).

可以找到一个完整的小提琴此处。按照这些步骤创建项目并替换 YOUR_CLIENT_ID_HERE 在小提琴中，项目中有相应的客户ID。

A complete Fiddle can be found here. Follow these steps to create a project and replace YOUR_CLIENT_ID_HERE in the Fiddle with the corresponding client id from the project.

关于AngularJS，请看一下这个问题帮助您开始为Angular构建服务。

Regarding AngularJS, take a look at this question to help you get started building a service for Angular.

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