I have many animated objects with keyframes. I want to hide/ make visible all objects with one click or one keyframe? How I can do this? In previous versions, I could easily add a keyframe in outliner with shortcut key I but now I can't.
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I have seen tutorials on the older Blender version to hide and unhide an object using keyframes.  I haven't been successful in 2.8.  I thought you could use collections to control this, but no luck.  I basically want to control the visibility of an object and various parts of the timeline.  What's the trick in 2.83.  Thanks
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I'm doing a short little animation for a side project and the length is 167 frames. I think I accidentally clicked something and now it only plays up to half of the clip before looping.  So for example let's say I was doing an animation of someone sitting down. Halfway through this animation, it just cuts off as if it reached the end of the clip already.  Also that green line that runs while the animation is playing is always really far behind my mouse. I'm really stuck and confused by this, so I'd really love some insight on this subject.  Also due to copyright, I can't actually share or upload the file or any of it's contents.  Here are some screenshots of the timeline and settings:
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When you select an object in blender a yellowish ring appears around it. And no matter how much your rotate your view or the object, the outline will only appear on the visible outline of the object. It does not appear on every edge.    How can I get this effect on any object like an object modifier(but it doesn't have to be of course)? I also want to be able to change the width and set the material. I will be rendering this with openGL as an animation. Some objects rotate in my animation and I want them to be able maintain an outline.
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I've got a problem with masking. I've made an object and masked it over. The masking effect is visible, but it should go behind the object.  The transparent part should be at 0% visibility, but somehow it's still visible and I'm not sure why. How do I fully hide this part of the object?
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Let's say I'm really new to Blender, and have just barely figured out what keyframes are for. Explain a Blender skeleton to me like I'm five. Do I need to use it, and how exactly does it connect to the rest of the model?
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In the VSE, I have a scene strip, but I cannot change the opacity.  It just snaps back to the last value it was keyframed at as soon as I alter it.  (Blender 2.69)
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I have an add-on with rather a lot of UI options and am trying to find a way to clean it up so that not all the options need to be shown at once. I've noticed that some of the default tools have foldout sections, but I can't figure out what UI component I need to use to get the same behaviour.  Here is an example of what I'm talking about, showing the Color Picker panel open, but Color Palette and Options panels folded up. Is there a simple UI component I can use to emulate the behaviour and visual style of this in my add-on?
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I know about beamer's  feature \setbeamercovered{invisible} and \setbeamercovered{transparent} to hide or grey out upcoming item's . But is there some way to have past items greyed (transparent) and future items hidden (invisible), so that only the current item is black/highlighted? And the best would be if on or 1 slide after the last all the item's could be visible highlighted. Something like this:   [grey] past 1 [grey] past 2 current [hidden] future 1 [hidden] future 2 [hidden] future 3   Is there any easy way of doing this?
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I'm a begginer in blender, so please forgive me if the question looks silly to you!  Almost all the objects in my scene disappeared (except 2) as if I deleted them by mistake. The thing is all the objects are still listed in the right side graph. The all have the eye button activated, but yet nothing is visible anymore! As I don't have a backup file, I simply can't find any tricks to fix this...  Thank you for you help!
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How can I make an object show up on different layers without having to copy it? E.g. I have an object animated and I want it to show up on multiple layers.
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Intro:  Ok, so I'm new to blender and have looked all over the internet, and blender is not working as expected (and all the usual that seems to be the required greeting on this site...)  Question.  I can use masks created in the movie clip editor (or the UV/Image editor) in the compositor to combine elements.     How can I use masks to combine shaders and textures?  I could render the mask as an image sequence ,and plug the images as a texture in the material editor. But then every new adjustment  that has to be made in the mask means that the sequence has to be re-rendered. Not the best workflow. Masks being vectors have so many advantages over pixel based files, on top of that it is easy to rotoscope using tracking tools, also they are quite easy to animate and allow fine control when it comes to feathering.  Is there some python amazing script, animation node, add-on, or secret menu for the initiated that allows the mask information to be used interactively on the material editor?
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In the Outliner, I have an object that contains a bunch of sub-objects. If I select the object and delete it, all the contained objects 'bounce out of it' and are still around. This is true whether I select just the object itself and delete it, or if I use select hierarchy and then right click on it again and delete all the selected objects. Either way, the child objects bounce out and are still present.
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I would like to display and hide the Keyboard Viewer using a shortcut.   Is there a way to display the Keyboard Viewer via a keyboard shortcut? Is there a way to automatically display the Keyboard Viewer once I switch to a specific language?
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I am working with a blender3d animation where I need some objects appear/hide at specific frames. I made all the work using the eye icon (visibility view-port) instead of camera icon (render-visibility) before discovering that they are not the same :(  Aside from animating everything again and hitting my head on the wall for not reading the whole manual, is there some python script or something to move the existing animation keyframes from one channel to the other?
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I want to lock objects from getting selected, but not change their visibility.  2.8 removed the lock button from the outliner. How do you lock objects in 2.8?
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I have a complex scene with physics (not baked) and I discovered a long way into the scene that I need to scale everything up for the physics to do it's thing right. I scaled everything up, pressed play and everything went to crap. My keyframes are interfering. Is there a way to set the scale of all of the objects across all of the keyframes without messing up the other keyframe settings?
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I have an application using multiple windows. How can I quickly bring all the windows of that application to the foreground?   When I scroll through the applications with the scroll-wheel it only shows one window. When going to the next window, the last window is brought to the background again.  When I click on the application icon, I get a full-screen overview of all the windows. I have to select each window manually and move my mouse across half the screen several times.  My best solution so far is minimizing all windows (Ctrl+Super+D) and then show the windows of my application using the scroll-wheel.  Is there a better solution?