如何将预编译的二进制文件与电子捆绑在一起 [英] How can I bundle a precompiled binary with electron

问题描述

我正试图用电子应用程序包括一个预编译的二进制文件。我开始用电子快速启动应用程序，并修改了我的 renderer.js 文件，以包含当文件放在正文时触发的代码：

  spawn = require（'child_process'）.spawn，
 ffmpeg = spawn（'node_modules / .bin / ffmpeg'，['-i' ，夹子[0]， ' - 一个'， ' - 问：v'， '1'， ' - 了vcodec'， 'libx264'， ' -  Y'， ' -  pix_fmt'， 'YUV420P'， ' -  VF'， 'setsar = 1，scale = trunc（iw / 2）* 2：trunc（ih / 2）* 2，crop = in_w：in_h-50：0：50'，'/tmp/out21321.mp4']）; 
 
 ffmpeg.stdout.on（'data'，data => {
 console.log（`stdout：$ {data}`）; 
}）; 
 ffmpeg.stderr.on（'data'，data => {
 console.log（`stderr：$ {data}`）; 
}）; 
  

我已将我的预编译ffmpeg二进制文件放在 node_modules / .bin / code>。一切在开发板中都很出色，但是当我使用电子包装器设置应用程序时，它会在触发时向控制台发出一个产生错误ENOENT 。我找到一个非常相似的问题但是，这个问题似乎并没有得到明确的回答。 电子包装商的npm页面确实表明可以捆绑，但我不能找到有关如何执行的任何文档。

解决方案

如果有人碰巧需要回答这个问题：我有一个解决方案对此，但我不知道这是否被认为是最佳做法。我找不到包含第三方预编译二进制文件的任何好的文档，所以我只是用它，直到它终于工作。这是我做的（从电子快速启动，node.js v6开始）：

从应用程序目录中，我运行以下命令将ffmpeg二进制文件作为模块：

  mkdir node_modules / ffmpeg 
 cp / usr / local / bin / ffmpeg node_modules / ffmpeg / 
 ln -s ../ffmpeg/ffmpeg node_modules / .bin / ffmpeg 
  

（replace / usr / local / bin / ffmpeg与你当前的二进制路径，从这里下载）放置链接允许电子包装器包含我保存的二进制文件到node_modules / ffmpeg /.

然后要获得捆绑的应用程序路径，我通过运行以下命令安装了npm包app-root-dir：

  npm i -S app-root-dir 
  

由于我可以得到应用程序路径，我只是附加了子文件夹为我的二进制并从那里产生。这是我放在renderer.js中的代码：。

  var appRootDir = require（'app-root-dir'） 。得到（）; 
 var ffmpegpath = appRootDir +'/ node_modules / ffmpeg / ffmpeg'; 
 console.log（ffmpegpath）; 
 
 const 
 spawn = require（'child_process'）.spawn，
 ffmpeg = spawn（ffmpegpath，['-i'，clips_input [0]]）; //添加你需要的任何开关
 
 ffmpeg.stdout.on（'data'，data => {
 console.log（`stdout：$ {data}`）; 
}）; 
 ffmpeg.stderr.on（'data'，data => {
 console.log（`stderr：$ {data}`）; 
}）; 
  

I am trying to include a precompiled binary with an electron app. I began with electron quick start app and modified my renderer.js file to include this code that is triggered when a file is dropped on the body:

spawn = require( 'child_process' ).spawn,
        ffmpeg = spawn( 'node_modules/.bin/ffmpeg', ['-i',clips[0],'-an','-q:v','1','-vcodec','libx264','-y','-pix_fmt','yuv420p','-vf','setsar=1,scale=trunc(iw/2)*2:trunc(ih/2)*2,crop=in_w:in_h-50:0:50', '/tmp/out21321.mp4']);

   ffmpeg.stdout.on( 'data', data => {
         console.log( `stdout: ${data}` );
        });
   ffmpeg.stderr.on( 'data', data => {
    console.log( `stderr: ${data}` );
        });

I have placed my precompiled ffmpeg binary in node_modules/.bin/. Everything works great in the dev panel, but when I use electron-packager to set up the app, it throws a spawn error ENOENT to the console when triggered. I did find a very similar question on SO, but the question doesn't seem to be definitively answered. The npm page on electron-packager does show that they can be bundled, but I cannot find any documentation on how to do so.

解决方案

If anyone happens to need an answer to this question: I do have a solution to this, but I have no idea if this is considered best practice. I couldn't find any good documentation for including 3rd party precompiled binaries, so I just fiddled with it until it finally worked. Here's what I did (starting with the electron quick start, node.js v6):

From the app directory I ran the following commands to include the ffmpeg binary as a module:

mkdir node_modules/ffmpeg
cp /usr/local/bin/ffmpeg node_modules/ffmpeg/
ln -s ../ffmpeg/ffmpeg node_modules/.bin/ffmpeg

(replace /usr/local/bin/ffmpeg with your current binary path, download it from here) Placing the link allowed electron-packager to include the binary I saved to node_modules/ffmpeg/.

Then to get the bundled app path I installed the npm package app-root-dir by running the following command:

npm i -S app-root-dir

Since I could then get the app path, I just appended the subfolder for my binary and spawned from there. This is the code that I placed in renderer.js:.

var appRootDir = require('app-root-dir').get();
var ffmpegpath=appRootDir+'/node_modules/ffmpeg/ffmpeg';
console.log(ffmpegpath);

const
    spawn = require( 'child_process' ).spawn,
    ffmpeg = spawn( ffmpegpath, ['-i',clips_input[0]]);  //add whatever switches you need here

ffmpeg.stdout.on( 'data', data => {
     console.log( `stdout: ${data}` );
    });
   ffmpeg.stderr.on( 'data', data => {
console.log( `stderr: ${data}` );
    });

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