合并 WAV 音频和 WebM 视频 [英] Merge WAV audio and WebM video
问题描述
有没有办法在 nodejs 服务器中合并音频(wav)和视频(webm)?
There's a way to merge an audio (wav) and a video (webm) in a nodejs server?
由于 WebM 是一种容器格式,我希望可以将音轨添加到现有的 WebM 文件中.我是对的?
Since WebM is a container format, I hope that is possible add audio track to an existing WebM file. I'm right?
有人知道这样做的 NodeJS 包吗?
Anyone know a NodeJS package for doing this?
推荐答案
找到了解决方案,但做起来并不简单.这样做是必需的ffmpeg(或类似的).
Found a solution, but is not really simple to do. For do this is required ffmpeg (or similar).
要安装它,我完成了以下步骤:
To install it I done this steps:
- (仅适用于 mac)安装 HomeBrew.
使用所需的所有依赖项运行 ffmpeg 的安装:
- (only for mac) install HomeBrew.
run the installation of ffmpeg with all the dependences that is required:
sudo brew install ffmpeg --with-libvpx --with-theora --whit-libogg --with-libvorbis
现在我们可以使用这个 shell 命令合并音频和视频文件:
now we can merge a audio and a video file with this shell command:
ffmpeg -i video-file.webm -i audio-file.wav -map 0:0 -map 1:0 output-file-name.webm
这里我们可以从我们的 shell 合并文件,但我需要的不是这个.我需要能够从 NodeJS 服务器执行此操作,现在我们可以运行此代码.
Here we can merge file from our shell, but what I needed was not this. I needed the capability to do this from a NodeJS server, and for doing this now we can run this code.
var util = require('util'),
child_process = require('child_process');
var exec = child_process.exec;
function puts(error, stdout, stderr) {
stdout ? util.print('stdout: ' + stdout) : null;
stderr ? util.print('stderr: ' + stderr) : null;
error ? console.log('exec error: ' + error) : null;
}
exec("ffmpeg -i video-file.webm -i audio-file.wav -map 0:0 -map 1:0 output-file-name.webm", puts);
这个简单的解决方案对我来说很好.
This simple solution work fine for me.
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