Similarly, YouTube allows you to retain ownership over your copyright protected work when sharing it with other users of the platform. However, when using YouTube’s services to upload any content, you grant limited licence rights to YouTube and other users of the same platform. More specifically, you grant to YouTube a worldwide, non-exclusive, royalty-free, transferable licence (with right to sub-licence) to use, reproduce, distribute, prepare derivative works of, display, and perform your work. These rights, however, can be exercised by YouTube only in connection with the provision of the platform service and other services in YouTube's business, including for promoting and redistributing the platform’s services in any media formats and through any media channels.
On the other hand, to each user of the platform you grant a worldwide, non-exclusive, royalty-free licence to access your work through the platform and to use, reproduce, distribute, prepare derivative works of, display and perform it to the extent permitted by the functionality of the platform and under the terms and conditions of YouTube.
So, simply put, when uploading your own work in YouTube, you should be aware that you are granting YouTube the license right to use your work in various manners in relation to its business activities and each user the right to use your work to the extent permitted by the functionality of the platform – to view it, share it, to reproduce and modify it, etc.
Finally, the above licenses can be terminated when you remove or delete your work from the website. However, according to YouTube, the licenses granted by you in relation to the textual comments you have submitted in the platform are perpetual and irrevocable regardless your ownerships rights over them. This provision creates controversy since it may come into conflict with various national copyright provisions where such perpetual licenses are imperatively prohibited by law.