Node.js可以编辑视频文件吗？

Question

I was wondering how compatible Node.js is with videos. Not playing them, but actually editing it. My end goal is to reverse videos online. Java looks like my best bet so far, but I do like how Node.js is fast, scalable, etc.

Does anyone know if it is possible with node.js? At lease being able to break up videos into frames, putting them into an array of some sort, and then sticking them back up.

My guess is probably not, as it looks as it is based off of JavaScript. I may be wrong, but I think javaScript is more UI, Animating, Simple Data jobs, etc. Not big time video editing.

Any help is highly appreciated.

Answer 1

ffmpeg/libav is the go-to library for this sort of thing on Linux. While there are some ffmpeg bindings for node.js (eg, https://github.com/xonecas/ffmpeg-node ), they aren't quite as complete as you'd need for this task, and in any case ffmpeg is itself not asynchronous in the sort of way that you'd need to make this make sense for node.js.

I'd start by trying to implement this task using ffmpeg/libav using C, then consider other implementations afterwards.

Answer 2

I would approach this from the other end: What tool can I use to reverse videos? I'm sure there are better options out there, but at least it's possible to do with ffmpeg, according to this SO answer . The caveat is that you have to split it into images and then stitch them back together.

If you would go with this route (ie, using ffmpeg in the manner described), you could indeed accomplish it with node.js for the web application and job handling. I would have some kind of workers (either something similar to eg resque or using eg node.js child_process.fork ).

As @duskwuff mentions in his answer, this solution won't be streaming, but using workers, you might be able to accomplish something acceptable, depending on your requirements.

If, on the other hand, you have eg a Java library that's awesome in reversing videos, you should use that, and perhaps build the web app in Java as well.