根据https://developers.google.com/youtube/v3/docs/videoCategories的文档，将videoCategory设置为assignable的{{1}}表示视频不能“与该类别相关联。”然而，实际上，我经常看到新发布的视频属于不可分配的类别。例如，类别44，预告片不可分配：
false但是，半小时前发布的https://www.youtube.com/watch?v=fV4CL3ec-C0属于该类别，可以通过查询{
"kind": "youtube#videoCategoryListResponse",
"etag": "\"sZ5p5Mo8dPpfIzLYQBF8QIQJym0/eD61zd9m0XnQ2ZM5b9n0Q8fREKY\"",
"items": [
{
"kind": "youtube#videoCategory",
"etag": "\"sZ5p5Mo8dPpfIzLYQBF8QIQJym0/x5NxSf5fz8hn4loSN4rvhwzD_pY\"",
"id": "44",
"snippet": {
"channelId": "UCBR8-60-B28hp2BmDPdntcQ",
"title": "Trailers",
"assignable": false
}
}
]
}
videos API看到：
list新视频通过何种机制添加到非{
"kind": "youtube#videoListResponse",
"etag": "\"sZ5p5Mo8dPpfIzLYQBF8QIQJym0/NWLSF1NxIRL6hEGPkRpbFpl6ShA\"",
"pageInfo": {
"totalResults": 1,
"resultsPerPage": 1
},
"items": [
{
"kind": "youtube#video",
"etag": "\"sZ5p5Mo8dPpfIzLYQBF8QIQJym0/TMALCjmdQYcndOpePwtvPYbaBBI\"",
"id": "fV4CL3ec-C0",
"snippet": {
"publishedAt": "2016-11-07T11:00:03.000Z",
"channelId": "UCxk91kWNnZEIyE-1HgqzvHw",
"title": "USS Indianapolis: The Legacy - Trailer",
"description": "Based on the largest collection of original source material available on the subject, The Legacy Project is a complete re-telling of the story of the USS Indianapolis, told first hand, by those who lived through the experience.",
"thumbnails": {
"default": {
"url": "https://i.ytimg.com/vi/fV4CL3ec-C0/default.jpg",
"width": 120,
"height": 90
},
"medium": {
"url": "https://i.ytimg.com/vi/fV4CL3ec-C0/mqdefault.jpg",
"width": 320,
"height": 180
},
"high": {
"url": "https://i.ytimg.com/vi/fV4CL3ec-C0/hqdefault.jpg",
"width": 480,
"height": 360
},
"standard": {
"url": "https://i.ytimg.com/vi/fV4CL3ec-C0/sddefault.jpg",
"width": 640,
"height": 480
},
"maxres": {
"url": "https://i.ytimg.com/vi/fV4CL3ec-C0/maxresdefault.jpg",
"width": 1280,
"height": 720
}
},
"channelTitle": "GravitasVODGlobal",
"tags": [
"Military",
"WWII",
"Indianapolis",
"McVay",
"Navy",
"Atomic Bomb",
"Sharks",
"Cruiser",
"Hunter Scott",
"Pacific War"
],
"categoryId": "44",
"liveBroadcastContent": "none",
"localized": {
"title": "USS Indianapolis: The Legacy - Trailer",
"description": "Based on the largest collection of original source material available on the subject, The Legacy Project is a complete re-telling of the story of the USS Indianapolis, told first hand, by those who lived through the experience."
}
}
}
]
}
类别？是否有一些秘密API仅适用于YouTube有特殊处理的某些客户，或者是否有公开记录的机制可以将视频添加到非assignable类别？无论哪种方式，开发人员是否有办法区分这些名义上不属于assignable的类别与那些真正不接受新视频的类别？