我使用Youtube API收集数据，然后使用node.js Youtube Downloader。
最后，我在经典的html5 <video>标签上使用了视频。
出于某些原因，某些视频效果不错，而有些则效果不佳。
我在服务器部分使用此软件包->
https://www.npmjs.com/package/youtube-dl
if (request.url.search(/.nidza|.dzoni/g) != -1) {
// file.serveFile('bad.html', 402, {}, request, response);
const localVid = request.url.split("?vid=")
console.log("videoID => ", localVid[1])
console.log("Vule bule request.url., ", request.url)
const addressLink = 'http://www.youtube.com/watch?v=' + localVid[1]
const checkvideo = '../dist/videos/vule' + localVid[1] + '.mp4'
try {
if (fs.existsSync(checkvideo)) {
// file exists
console.log("skip...")
response.writeHead(200, {'Content-Type': 'text/plain'});
response.end('[video-exist]');
return;
}
} catch(err) {
console.error(err)
}
const myPromise = new Promise((resolve, reject) => {
var test = youtubedl(addressLink, ['--format=18'], { cwd: __dirname })
try{
resolve(test)
} catch(err) {
reject(err)
}
}).then((video) => {
video.on('info', function(info) {
console.log('Download started')
console.log('filename: ' + info._filename)
console.log('size: ' + info.size)
})
const videoName = '../dist/videos/vule' + localVid[1] + '.mp4';
video.pipe(fs.createWriteStream(videoName, {
flag: "w+"
}))
}).catch(function(err) {
reject().than(()=>{
console.log("Error in promise youtubedl => ", err)
})
});
response.writeHead(200, {'Content-Type': 'text/plain'})
response.end(`VuleTube service version 0.3.1 \n
https://maximumroulette.com:3000 `)
}
错误登录服务器端:
f an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:23569) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
Request contains invalid range header: [ '0', '' ]
Error: Range request present but invalid, might serve whole file instead
at Server.respondNoGzip (/var/www/html/applications/vue-project/vue-typescript-starter/vue-ts-starter/server/node_modules/node-static/lib/node-static.js:297:23)
at Server.respond (/var/www/html/applications/vue-project/vue-typescript-starter/vue-ts-starter/server/node_modules/node-static/lib/node-static.js:350:14)
at /var/www/html/applications/vue-project/vue-typescript-starter/vue-ts-starter/server/node_modules/node-static/lib/node-static.js:146:22
at FSReqWrap.oncomplete (fs.js:166:5)
Range request exceeds file boundaries, goes until byte no 524287 against file size of 1312 bytes
Error: Range request present but invalid, might serve whole file instead
at Server.respondNoGzip (/var/www/html/applications/vue-project/vue-typescript-starter/vue-ts-starter/server/node_modules/node-static/lib/node-static.js:297:23)
at Server.respond (/var/www/html/applications/vue-project/vue-typescript-starter/vue-ts-starter/server/node_modules/node-static/lib/node-static.js:350:14)
at /var/www/html/applications/vue-project/vue-typescript-starter/vue-ts-starter/server/node_modules/node-static/lib/node-static.js:64:22
at FSReqWrap.oncomplete (fs.js:166:5)
最佳答案
某些视频无法正常运行，因为Youtube并非始终会在要求时公开其视频的网址。
Youtube-DL向http://www.youtube.com/get_video_info?video_id=XXXX(其中XXXX是视频ID)发出请求，这将返回一个JSON文本文件，其中包含与所请求的视频上传相关联的MP4 / webM / M4A，OGG等文件的URL。
例如:
(1)正在工作:您可以找到JSON中提到的googlevideo.com链接(MP4等)
皮诺曹(预告片):http://www.youtube.com/get_video_info?video_id=y8UDuUVwUzg
(2)不起作用:您无法在此JSON中找到googlevideo.com链接(无视频链接可供下载)
幻影(整部电影):http://www.youtube.com/get_video_info?video_id=FTY-L-l3KN8