Fluent FFMPEG Write Stream to Variable

When working with video processing tasks, it's essential to understand how to effectively write a stream to a variable using Fluent FFMPEG. In this article, we'll explore the process of writing a stream to a variable and address some common issues that may arise.

Firstly, let's define the problem. When attempting to pipe a stream from Fluent FFMPEG to an Amazon AWS Put URL, you may encounter the error 'You cannot pipe to this stream after the outbound request has started.' This issue can be frustrating, especially when working with critical video processing tasks.

To overcome this challenge, it's essential to understand how to properly write a stream to a variable using Fluent FFMPEG. One common approach is to use the `outputPipe` method provided by Fluent FFMPEG. This method allows you to specify the output stream and pipe it to a variable.

Here's an example of how to use the `outputPipe` method:

```javascript

const ffmpeg = require('fluent-ffmpeg');

const request = require('request');

const video = '/Users/xorain/Documents/test_videos/movie.mp4';

const putURL = 'https://s3.amazonaws.com/your-bucket-name/your-video-name.mp4';

const outputPipe = ffmpeg(video)

.format('mp4')

.outputOptions(''-c:v libx264', '-crf 18'')

.pipe(request.put(putURL));

```

In this example, we're using the `ffmpeg` method to specify the input video file and then using the `outputPipe` method to pipe the output stream to a variable. We're also specifying some optional parameters such as the format, codec, and quality settings.

Once you've set up your Fluent FFMPEG configuration, you can use the `outputPipe` method to write the stream to a variable. This variable can then be used for further processing or writing to an Amazon AWS Put URL.

In conclusion, writing a stream to a variable using Fluent FFMPEG is a crucial step in video processing tasks. By understanding how to properly use the `outputPipe` method and addressing common issues such as the 'You cannot pipe to this stream after the outbound request has started' error, you can successfully write a stream to a variable and achieve your video processing goals.

Fluent ffmpeg write stream to variable