Youtube intends to remove video editing tools that are not widely used by them users of. The cutoff date appears to be September 20, 2017.
Unless you are a frantic user YouTube, you might not know that the popular website has one in its tools program video editor and a photo slideshow to perfect your videos. And maybe you're learning about it a little late, since Youtube decided to take them down. If you've already tried them and are in the middle of editing your video, you should have it finished and published by September 20th, as says Google on her page supportof YouTube.
The possible cause of these tools being removed is, of course, because they do not have a demand, and that is why the process is extremely slow when it comes to processing one's own video locally on his own computer with his own programs. Editing via Youtube requires uploading your video to edit and download the final copy. That said, as an idea was a good choice for Chromebook users or kids with low-power laptops or tablets.
However, Google points out that many free and paid third-party processing tools are available. In other words, the app was useful as a way to attract YouTube customers when 2010 came in. But with so many applications out there, resources are no longer worth it.
If you're willing to pay and have a decent Intel or Mac machine, there are interesting standalone applications for this work, such as Adobe Premiere CC, Allpe's Mac-only Final Cut Pro X, and Avid's pro-oriented Media Composer. Avid also has a free app called Media Composer First, Apple has iMovie for Mac and Clips for iOS, and Microsoft has Movie Maker for Windows. If you just want a web editor, there are options like Magisto and WeVideo that work in most browsers, including the Chrome browser on Chromebooks.
Finally, Google maintains Youtube enhancement tools, which can filter, mute and cut videos.