Does reproducing a board game as a video game violate copyright? The context I am thinking of is converting a board game into a video game or app. Of course, I can't manufacture a physical copy of the game without permission, but does the same apply to a virtual version? My understanding is that copyright protects only the particular manner of an author’s expression. This means that the board game is copyrighted, but a video game with the same mechanics is not. Is that the case?
Game mechanics are not copyright able. However, the images, words used, description of the rules are all copyright. If the original games is the source of the video game then the video game is a derivative work. If the original game is only the inspiration and the look and feel is different then this is OK. Which is which will turn on the actual facts.
In general, a gameplay video would be either a partial copy or a derivative work, and in either case an infringement if created without permission. Such a video might be covered under fair use in US copyright law, particularly if made for the purpose of commentary on a game or instruction in how to play or design a game. In general, a fair use defense is more likely to succeed if only the minimum amount of the work required for the purpose is used, and sound tracks might not be required for such a purpose. Thus a maker of such a video might choose to omit the sound to improve the fair-use case. Moreover, when the sound track contains licensed popular music it would be subject to a separate copyright, and many music publishers are notoriously litigious, so prudence would advise omitting the sound. All that said, fair-use is a case-by-case determination, and if the makers of such videos have not been sued, they (and we) can only guess how a case would turn out. As to why game makers refrain from having such videos taken down (if they in fact do refrain) one can only speculate. Game publishers may consider the videos good advertising. Questions based on the absence of legal proceedings are inherently speculative, unless a copyright holder has announced a policy of not taking action and the reasons for it.
The author of that work owns its copyright. Barring a licence that gives you the right to use it, you are infringing copyright. (I'm assuming no fair use in this case; i.e. the YouTube clip isn't actually about the audio track.) If you pay for licences, make sure the licence allows for the purpose you intend to use it for.
A translation is a devivative work - the copyright owner has the exclusive right to these So, yes, translation is prima facie copyright infringement. Strictly speaking, if you translate it, it's a derivative work because you exercised creativity in making the translation; what Google translate does is not a derivative work, it's a copy because there is no creativity. Either way, only the copyright owner can do (or authorise) this. Whether it's legal or not depends on if what you are doing falls within one of the exceptions to the applicable copyright law such as fair use or fair dealing. Attributing the original author does not, of itself, allow translation. Additionally, I'm not able to find the copyright documentation for the site link I provided above. What is "copyright documentation"? Copyright exists the moment a work is created and no further documentation is required. Essentially, I could translate the whole documentation by myself to avoid this problem. No, you can't - see above. If copy-pasting the google translate is illegal, then exactly how much must I edit, move around sentences, change words, and such until the text is no longer plagiarized? All of it. If you were, based on your own knowledge of the software, to write a manual without any copying o the existing manual, that would not be copyright infringement. Is this plagiarism or copyright infringement? It's copyright infringement - plagiarism is an academic misconduct issue not a legal one. where can I check the copyright for the above link? The site you linked has "Copyright © 2020 Acquia, Inc. All Rights Reserved" in the bottom left corner which identifies the copyright holder, the date and prohibits all copying ("all rights reserved"). This isn't necessary but it is helpful. If you really want to do this, contact Acquia, Inc and ask for permission.
There aren't bright line rules in the area of fair use (which is the core issue - you are clearly copying a work that has copyright protected portions, at least - the question is whether fair use provides a defense and whether some portions are not copyright protected). This inquiry is fact specific and driven by general standards. Context such as whether the use would be free or commercial matter as well. For your own notes, anything goes pretty much. This generally wouldn't constitute "publication" of the work and would be for personal educational used by someone who paid for the book anyway. For shared notes - it depends. Also not all kinds of copying is created equal. Some parts of textbooks are themselves in the public domain or not protectable by copyright. For example, even a lengthy quote from a scientific journal article would probably be allowed with attribution. It would also be easier to evaluate based upon the type of textbook. A history textbook can have protection similar to trade non-fiction and can have very original exposition. An algebra textbook, less so. Your question also points to an end run. If the professor is the author of the textbook (many of mine were in something of a racket), you could get permission from the author.
This would be infringement. It generally doesn't matter that you're giving things away for free. Keep in mind that the point of these laws is not only to prevent third parties from making money off the creator's ideas, but also to protect the creator's ability to make money. If you're providing free knock-off Winnie the Pooh products, that cuts into the market for the creator's legitimate products.
Reproducing someone else's copyrighted material without permission is a violation of that copyright. This includes using it to promote your Twitter account. This is a violation of copyright law and of Twitter's TOS. There may be Fair Use exceptions- this question is arguably fair use. However, it's extremely unlikely your intended post counts. In the case of the image in question, royalty-free means you pay for a single licence for that image and can then use it as much as you want (according to that licence). You can post that image in as many of your tweets as you like- you don't have to pay each time. If you don't want to pay for images you use, use public domain images, images with licenses that allow you to use them, or create them yourself.
Udemy claims that all the videos and course content are copyrighted, but does that also hold for the material of the course? Yes, all the material is copyrighted. Ideas are not, material and content is. it would be really useful to me if I could take a large part of that code ... I want to know if I am allowed, by the law, to use this code for commercial purposes, or is it protected as the intellectual property? Yes, it is protected, specifically it has copyright applied and you may only use it if the license it is distributed under allows you to - in some cases this may be a permissive license, or the code may be obtainable legitimately from another source under a permissive license, in which case its usable. But in many cases, it may not be distributed under a permissive license or indeed any license, and in such cases you will not be permitted to use it. The license under which the code is released depends on the individual course, and in many cases the source code repository or download site for the code for the course. Check their for a license.