如何让fluent-ffmpeg在angular 8中工作？

Question

我已经在我的项目中安装了'fluent-ffmpeg‘插件，我以这种方式将它添加到我的angular项目中，var ffmpeg = require('fluent-ffmpeg')和我也使用了这个方法import * as ffmpeg from 'fluent-ffmpeg'

在使用ng serve构建时，我遇到了以下问题

ERROR in ./node_modules/fluent-ffmpeg/index.js
Module not found: Error: Can't resolve './lib-cov/fluent-ffmpeg' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg'
ERROR in ./node_modules/fluent-ffmpeg/lib/ffprobe.js
Module not found: Error: Can't resolve 'child_process' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
ERROR in ./node_modules/fluent-ffmpeg/lib/utils.js
Module not found: Error: Can't resolve 'child_process' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
ERROR in ./node_modules/fluent-ffmpeg/lib/processor.js
Module not found: Error: Can't resolve 'child_process' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
ERROR in ./node_modules/fluent-ffmpeg/lib/recipes.js
Module not found: Error: Can't resolve 'fs' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
ERROR in ./node_modules/fluent-ffmpeg/lib/capabilities.js
Module not found: Error: Can't resolve 'fs' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
ERROR in ./node_modules/fluent-ffmpeg/lib/processor.js
Module not found: Error: Can't resolve 'fs' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
ERROR in ./node_modules/isexe/windows.js
Module not found: Error: Can't resolve 'fs' in '/home/projects/angular/demo/node_modules/isexe'
ERROR in ./node_modules/isexe/mode.js
Module not found: Error: Can't resolve 'fs' in '/home/projects/angular/demo/node_modules/isexe'
ERROR in ./node_modules/isexe/index.js
Module not found: Error: Can't resolve 'fs' in '/home/projects/angular/demo/node_modules/isexe'
ERROR in ./node_modules/fluent-ffmpeg/lib/utils.js
Module not found: Error: Can't resolve 'os' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
ERROR in ./node_modules/fluent-ffmpeg/lib/fluent-ffmpeg.js
Module not found: Error: Can't resolve 'path' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
ERROR in ./node_modules/fluent-ffmpeg/lib/processor.js
Module not found: Error: Can't resolve 'path' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
ERROR in ./node_modules/fluent-ffmpeg/lib/recipes.js
Module not found: Error: Can't resolve 'path' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
ERROR in ./node_modules/fluent-ffmpeg/lib/capabilities.js
Module not found: Error: Can't resolve 'path' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'
ERROR in ./node_modules/fluent-ffmpeg/lib/options/misc.js
Module not found: Error: Can't resolve 'path' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib/options'
ERROR in ./node_modules/which/which.js
Module not found: Error: Can't resolve 'path' in '/home/projects/angular/demo/node_modules/which'
ERROR in ./node_modules/fluent-ffmpeg/lib/recipes.js
Module not found: Error: Can't resolve 'stream' in '/home/projects/angular/demo/node_modules/fluent-ffmpeg/lib'

请告诉我如何解决此错误

Answer 1

fluent-ffmpeg是一个JavaScript库，因此您可能认为可以在Angular应用程序中使用它，但它是一个用于调用ffmpeg二进制文件的包装器。您无法将ffmpeg二进制文件嵌入到客户端JavaScript应用程序中，因此不幸的是，这个库对您的用例没有帮助。

如果您想使用ffmpeg，您将需要调用您的服务器，并在服务器上使用ffmpeg (如果您的服务器使用Node运行，则可能在服务器上使用fluent-ffmpeg )。

您会遇到许多类似的JavaScript项目，这些项目非常常见，但它们是针对类似服务器的用例的，而不是针对客户端浏览器应用程序的。

Answer 2

如果你想在typescript中使用任何用于node的库，那么可以这样使用它。

declare var require: any; 
var ffmpeg = require('fluent-ffmpeg');