#MERGE VIDEOS FFMPEG NODEJS HOW TO#
#MERGE VIDEOS FFMPEG NODEJS CODE#
#MERGE VIDEOS FFMPEG NODEJS PROFESSIONAL#

#MERGE VIDEOS FFMPEG NODEJS HOW TO#

Unfortunately, it has paid license for commercial use.In this article, we will learn how to Merge two videos using Node.js. However, it’s already possible to generate pretty complex videos using it. The framework is still in active development at the time of writing, and there are a few quirks that need improvement. The developer experience gets improved thanks to the built-in debugger that enables you to debug videos frame-by-frame in a browser, The variety of open-source React components is enormous. This approach is slightly slower than Konva but allows you to leverage pretty much any third-party React library in the videos. It relies on puppeteer under the hood to render each frame, which controls a real headless Chrome or Chromium browser. The Remotion framework is another way to render videos in NodeJs using familiar React components. Setting the pixel format and video quality is also a good practice, and we skipped it here for simplicity. To a single video output with fps frames per second encoded with libx264, overwriting the output file if it exists. It will combine the files named frame-XXXXXX.png in the current directory (which is changed to outputDir for the command) In JavaScript, it will look something like this: async function renderVideo () Combine the image files to a single video.Destroy the Stage together with everything on it.Render every frame to a file, animating the objects on the Stage.Add all layers, shapes, and other nodes.Will all that in mind, our algorithm looks pretty straightforward: It’s a long process, and it’s worth leveraging every small trick to make it faster. Some of them, like images, can be cached to improve the rendering performance even further.įor smooth animations, the app should generate at least 25 frames per second. Reusing the Konva layers and other nodes between frames also makes sense. We can significantly improve performance by reusing it between frames.įortunately, it’s possible and not that hard. Konva’s root Stage object is pretty heavy, as it’s the one creating the Canvas container in Node.JS. You’re guaranteed to run out of memory in a proper backend that should run constantly.ĭoing it correctly from the start will save lots of debugging and refactoring time in the long run. While it doesn’t matter that much for our sample application that generates one video and exits, That’s especially important in the Node.JS environment, where it runs on top of the native Cairo library. It holds the whole node tree, and you have to do the memory management yourself. Konva is a bit tricky for JavaScript developers.

#MERGE VIDEOS FFMPEG NODEJS CODE#

The complete source code for this article is available on GitHub.įeel free to use it as a kick-starter for your projects. It’s been here for quite a while and became a robust go-to solution when dealing with videos. There’s a JavaScript FFmpeg port, but since the app would be running on the server, Stitching frames is also pretty straightforward. Node-canvas is a widespread Canvas API implementation for Node, built on top of Cairo, a native 2d graphics library. Konva also works in Node.JS on top of node-canvas using konva-node package.

#MERGE VIDEOS FFMPEG NODEJS PROFESSIONAL#

It enables developers to work with higher-level abstractions like Layers and shapes, just like in professional image editing software. Konva is one of the best canvas abstraction libraries in JavaScript. There are plenty of open-source tools to do that programmatically. Just generate each frame separately and stitch them to a single video. Did you know how easy it is to render videos in Node.JS?Įvery video consists of multiple frames combined in a sequence.

Merge videos ffmpeg nodejs