我已经创建了应用程序,其中用户上传视频,我想从该视频提取50个图像在nodejs中使用ffmpeg,但我无法获得该文件后,上传到特定的文件夹。我正在通过multer上传视频,因为它将视频存储在指定的文件夹中,之后我使用read stream读取了该视频,但它没有提供有关该特定视频的适当信息
代码:
var express = require('express');
var app = express();
var bodyParser = require('body-parser');
var path = require('path');
var multer = require('multer');
var cfenv = require('cfenv');
var watson = require('watson-developer-cloud');
var ffmpeg = require('ffmpeg');
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({"extended": false}));
app.use(express.static(__dirname + '/public'));
var storage = multer.diskStorage({
destination: function(req, file, callback){
callback(null, './public/class'); // set the destination
},
filename: function(req, file, callback){
callback(null, 199212+ '.avi'); // set the file name and extension
}
});
var upload = multer({storage: storage});
app.upload = upload;
// get the app environment from Cloud Foundry
var appEnv = cfenv.getAppEnv();
var VisualRecognitionV3 = require('watson-developer-cloud/visual-recognition/v3');
var fs = require('fs');
var visualRecognition = new VisualRecognitionV3({
version: '2018-03-19',
iam_apikey: 'aaIFu-fHWBXgj09eVarEQUFlIaTeH9bpgvRqHIJxu_8N'
});
app.post('/imgtable',app.upload.single('video-upl'),function(req,res){
var video_file = fs.createReadStream(req.file.path);
try {
var process = new ffmpeg('./public/class/199212.avi');
process.then(function (video) {
// Video metadata
console.log('******************************');
console.log(video);
// FFmpeg configuration
console.log('*********************************');
console.log(video.info_configuration);
}, function (err) {
console.log('Error: ' + err);
});
} catch (e) {
console.log(e.code);
console.log(e.msg);
}
})
app.listen(3000);`
https://stackoverflow.com/questions/51834464
复制相似问题