How do you compress mp4 videos?

Do you guys have a good online tool, command line tool or a Node.JS library to compress videos?

I would like to put a video I made today on a customer website, but I filmed it in 4k so for 15 sec. it weights 44MB 😂

The best tool that I am looking for would:

• Trim useless bytes
• Create variants by size (like 600x?, 980x?, 1200x?, 1920x?) with the ability to choose the sizes
• Create a webm counterpart of the video (not necessary, but appreciated)

Anyone?

Comments

[imeugn]

I will suggest ffmpeg as well. But there are some challenges, I think:

1. It is slow. There is a bottleneck problem, which has not been quite resolved yet. Multithreading definitely helps though.
2. Webm is not the best friend of ffmpeg. I had personally some problems with ffmpeg and webm. But for one video, it would suffice.

[Anwar]

I agree on both points, just ran ffmpeg to first resize my videos, it was quite slow, but I ask myself such a good tool might come with a cost.

Also, I struggled with the -crf ffmpeg option to make my webm version keep a good visual quality and reducing the weight (came up with a crf of 40 which divide the original video size by apoximatively 2, and a slight lesser quality but it is fine.

I really would have appreciated a Node.JS library for that 😁

[imeugn]

I know, what you mean. But there some other approaches, I have seen, that might be getting better and better. Rust, Matlab, Scala etc.
If I am not mistaken, there is a half baked solution for Julia as well. I would still go for ffmpeg for the moment. It is the more complete solution, we have

[Anwar]

Good to know there is other languages on the way, thank you for your inputs!

[Steve Layton]

ffmpeg is probably the best choice. You can even configure it to output multiple files, trac.ffmpeg.org/wiki/Creating%20mu....

[Anwar]

I guess it is the best way to achieve image resizing and converting to webm, thank you!