Question

我无法加载/播放一个简单的视频，所以我决定尝试查看webpack文件，看起来很好。代码如下。

const autoprefixer = require('autoprefixer');
const path = require('path');
const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const CaseSensitivePathsPlugin = require('case-sensitive-paths-webpack-plugin');
const InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');
const WatchMissingNodeModulesPlugin = require('react-dev-utils/WatchMissingNodeModulesPlugin');
const eslintFormatter = require('react-dev-utils/eslintFormatter');
const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin');
const getClientEnvironment = require('./env');
const paths = require('./paths');

const protocol = process.env.HTTPS === 'true' ? 'https' : 'http';
const host = process.env.HOST || '0.0.0.0';
const port = parseInt(process.env.PORT, 10) || 3000;
const publicPath = `${protocol}://${host}:${port}/`;

const publicUrl = '';
const env = getClientEnvironment(publicUrl);

module.exports = {
    devtool: 'cheap-module-source-map',
    entry: [
        require.resolve('./polyfills'),
        require.resolve('webpack-dev-server/client') + `?${publicPath}`,
        require.resolve('webpack/hot/dev-server'),
        paths.appIndexJs,
    ],
    output: {
        pathinfo: true,
        filename: 'static/js/bundle.js',
        chunkFilename: 'static/js/[name].chunk.js',
        publicPath: publicPath,
        devtoolModuleFilenameTemplate: info =>
            path.resolve(info.absoluteResourcePath).replace(/\\/g, '/'),
    },
    resolve: {
        modules: ['node_modules', paths.appNodeModules].concat(
            process.env.NODE_PATH.split(path.delimiter).filter(Boolean)
        ),
        extensions: ['.web.js', '.mjs', '.js', '.json', '.web.jsx', '.jsx'],
        alias: {
            'react-native': 'react-native-web',
        },
        plugins: [
            new ModuleScopePlugin(paths.appSrc, [paths.appPackageJson]),
        ],
    },
    module: {
        strictExportPresence: true,
        rules: [
            {
                test: /\.(js|jsx|mjs)$/,
                enforce: 'pre',
                use: [
                    {
                        options: {
                            formatter: eslintFormatter,
                            eslintPath: require.resolve('eslint'),  
                        },
                        loader: require.resolve('eslint-loader'),
                    },
                ],
                include: paths.appSrc,
            },
            {
                oneOf: [
                    {
                        test: [/\.bmp$/, /\.gif$/, /\.jpe?g$/, /\.png$/],
                        loader: require.resolve('url-loader'),
                        options: {
                            limit: 10000,
                            name: 'static/media/[name].[hash:8].[ext]',
                        },
                    },
                    {
                        test: /\.(js|jsx|mjs)$/,
                        include: paths.appSrc,
                        loader: require.resolve('babel-loader'),
                        options: {
                            cacheDirectory: true,
                        },
                    },
                    {
                        test: /\.css$/,
                        use: [
                            require.resolve('style-loader'),
                            {
                                loader: require.resolve('css-loader'),
                                options: {
                                    importLoaders: 1,
                                },
                            },
                            {
                                loader: require.resolve('postcss-loader'),
                                options: {
                                    ident: 'postcss',
                                    plugins: () => [
                                        require('postcss-flexbugs-fixes'),
                                        autoprefixer({
                                            browsers: [
                                                '>1%',
                                                'last 4 versions',
                                                'Firefox ESR',
                                                'not ie < 9', // React doesn't support IE8 anyway
                                            ],
                                            flexbox: 'no-2009',
                                        }),
                                    ],
                                },
                            },
                        ],
                    },
                    {
                        test: /\.(html)$/,
                        loader: require.resolve('html-loader'),
                    },
                    {
                        test: /\.mp4$/,
                        use: [
                            {
                                loader: require.resolve('file-loader'),
                                options: {
                                    name: 'static/media/[name].[hash:8].[ext]'
                                }  
                            }
                        ]
                    },
                    {
                        exclude: [/\.js$/, /\.html$/, /\.json$/],
                        loader: require.resolve('file-loader'),
                        options: {
                            name: 'static/media/[name].[hash:8].[ext]',
                        },
                    },
                ],
            },
        ],
    },
    plugins: [
        new InterpolateHtmlPlugin(env.raw),
        new HtmlWebpackPlugin({
            inject: true,
            template: paths.appHtml,
        }),
        new webpack.NamedModulesPlugin(),
        new webpack.DefinePlugin(env.stringified),
        new webpack.HotModuleReplacementPlugin(),
        new CaseSensitivePathsPlugin(),
        new WatchMissingNodeModulesPlugin(paths.appNodeModules),
        new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
    ],
    node: {
        dgram: 'empty',
        fs: 'empty',
        net: 'empty',
        tls: 'empty',
        child_process: 'empty',
    },
    performance: {
        hints: false,
    },
    target: 'node-webkit',
};

这是我下面的App.js。我拿出了一切并不重要的东西。这是对mp4文件的简单调用。

import React, { Component } from 'react';
import { curious } from '@curi/react';
import AttractLoop from '../../assets/videos/video.mp4';

class App extends Component {
    render() {
        return (
            <div className="app-container">
                <div className="attract-loop">
                    <video width="1080" height="1920">
                        <source src={ AttractLoop } type="video/mp4" />
                    </video>
                </div>
            </div>
        );
    }
}

export default curious(App);

这是我的代码检查员的屏幕截图：

更新1

我甚至尝试使用此SO question中的代码：

<video width="1080" height="1920" autoPlay loop src={ AttractLoop } type="video/mp4" />

更新2

我下载了示例Big Buck Bunny vide o以排除我的视频编码错误。得到相同的结果，一个空白页。

Answer 1

我想回答真正的问题，尽管@Jonny有一些很好的webpack更改可以帮助其他人。

我的Create React App与Nw.js混合，后者是一个允许用户从他们的项目创建exe文件的平台。我从https://github.com/naviapps/create-nw-react-app/issues/6发现NW.js默认不允许使用mp4s所以我需要配置我的项目设置来接受它们或者将我的视频格式改为ogv（或其他）。

Answer 2

此处的问题是您的webpack.config.js已设置为将媒体输出到静态目录。使用ExpressJS，您定义的静态目录不应在公共路径中使用。该路径映射到公共路径的根目录。要解决此问题，您需要调整webpack.config.js仍然输出到此静态目录，但在加载文件加载器时不要将其写入文件名。尝试这样的事情：

module.exports = {
  devtool: 'cheap-module-source-map',
  entry: [
    require.resolve('./polyfills'),
    require.resolve('webpack-dev-server/client') + `?${publicPath}`,
    require.resolve('webpack/hot/dev-server'),
    paths.appIndexJs,
  ],
  output: {
    pathinfo: true,
    filename: 'js/bundle.js',
    chunkFilename: 'js/[name].chunk.js',
    // double check that this has it's backslashes in the right place
    path: path.resolve(__dirname, publicPath + '/static'),
    publicPath: publicPath',
    devtoolModuleFilenameTemplate: info =>
      path.resolve(info.absoluteResourcePath).replace(/\\/g, '/'),
  },
  resolve: {
    modules: ['node_modules', paths.appNodeModules].concat(
      process.env.NODE_PATH.split(path.delimiter).filter(Boolean)
    ),
    extensions: ['.web.js', '.mjs', '.js', '.json', '.web.jsx', '.jsx'],
    alias: {
      'react-native': 'react-native-web',
    },
    plugins: [
      new ModuleScopePlugin(paths.appSrc, [paths.appPackageJson]),
    ],
  },
  module: {
    strictExportPresence: true,
    rules: [
      {
        test: /\.(js|jsx|mjs)$/,
        enforce: 'pre',
        use: [
          {
            options: {
              formatter: eslintFormatter,
              eslintPath: require.resolve('eslint'),
            },
            loader: require.resolve('eslint-loader'),
          },
        ],
        include: paths.appSrc,
      },
      {
        oneOf: [
          {
            test: [/\.bmp$/, /\.gif$/, /\.jpe?g$/, /\.png$/],
            loader: require.resolve('url-loader'),
            options: {
              limit: 10000,
              //name: 'static/media/[name].[hash:8].[ext]',
              name: 'media/[name].[hash:8].[ext]',
            },
          },
          {
            test: /\.(js|jsx|mjs)$/,
            include: paths.appSrc,
            loader: require.resolve('babel-loader'),
            options: {
              cacheDirectory: true,
            },
          },
          {
            test: /\.css$/,
            use: [
              require.resolve('style-loader'),
              {
                loader: require.resolve('css-loader'),
                options: {
                  importLoaders: 1,
                },
              },
              {
                loader: require.resolve('postcss-loader'),
                options: {
                  ident: 'postcss',
                  plugins: () => [
                    require('postcss-flexbugs-fixes'),
                    autoprefixer({
                      browsers: [
                        '>1%',
                        'last 4 versions',
                        'Firefox ESR',
                        'not ie < 9', // React doesn't support IE8 anyway
                      ],
                      flexbox: 'no-2009',
                    }),
                  ],
                },
              },
            ],
          },
          {
            test: /\.(html)$/,
            loader: require.resolve('html-loader'),
          },
          {
            test: /\.mp4$/,
            use: [
              {
                loader: require.resolve('file-loader'),
                options: {
                  //name: 'static/media/[name].[hash:8].[ext]'
                  name: 'media/[name].[hash:8].[ext]'
                }
              }
            ]
          },
          {
            exclude: [/\.js$/, /\.html$/, /\.json$/],
            loader: require.resolve('file-loader'),
            options: {
              //name: 'static/media/[name].[hash:8].[ext]',
              name: 'media/[name].[hash:8].[ext]',
            },
          },
        ],
      },
    ],
  },
  plugins: [
    new InterpolateHtmlPlugin(env.raw),
    new HtmlWebpackPlugin({
      inject: true,
      template: paths.appHtml,
    }),
    new webpack.NamedModulesPlugin(),
    new webpack.DefinePlugin(env.stringified),
    new webpack.HotModuleReplacementPlugin(),
    new CaseSensitivePathsPlugin(),
    new WatchMissingNodeModulesPlugin(paths.appNodeModules),
    new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
  ],
  node: {
    dgram: 'empty',
    fs: 'empty',
    net: 'empty',
    tls: 'empty',
    child_process: 'empty',
  },
  performance: {
    hints: false,
  },
  target: 'node-webkit',
};

本地视频无法加载 - Webpack

2 个答案: