It will start rendering non-rendered frames and that's can be time consuming (and nerve-wracking) on a long video. IMPORTANT - When the Layer windows loses focus and your computer idles after a predetermined amount of time set in the Preview Preferences, that's when AE starts messing with you. This means, it's frame by frame, using the Page UP/DN key only. More specifically, this rotoscoping method (apparently called the Brute Force approach) is the only one that's gets the job done for me. And I just have an average gaming desktop with an unsupported AMD GPU. I never got any issue rotoscoping with AE since, no matter the complexity of the scene. Premiere here is the way to go for this, trust me, even if AE can do it too.Ģ0 seconds it the magic number for me. Since AE messes up or starts to struggle beyond the 20 seconds mark when rotoscoping, I, then split my video in 20 seconds numerated segments that I will reassemble once all done. Then, I will end up with a video with an incompleted alpha channel with a matte surrounding the subject that I want to get rid of. Here, I will create a pretty loose mask surrounding the subject so mask-tracking gets done fairly quickly. Otherwise, in the above situation, prep your file, (clean the file prior rotoscoping). (Just to let you know it is possible or someone suggest this, but I never got this lucky myself.) Maybe you can get away by just adding an alpha channel. Learn about #pre-multiplied vs #straight alpha. Unfortunately.įor instance, suppose you don't have a MP4 with no alpha channel (such a YouTube video), and you can't color key the background without loosing too much details that you want to keep. You won't be able to roto brush a 5 minutes video with a subject jumping and moving around with black hair over a black pix e lated background, from start to finish, UNLESS, you split and prep your video before. If you use this, I guaranty you it will not be another waste day in front of AE.ĪE has numerous limitations(let's call them that way). So, here the way I do it on real life situation with complex rotoscoping jobs. I know you can reduce the span or have multiple ones, but that doesn't change anything. Just this, not having being made to work this way is puzzling. Once you're happy with a portion, you should be able to just lock it, so AE don't come after you and just mess with it. In AE2023, there should be a way to stop and constrain the propagation in time, other than Freezing the complete job. SO HERE'S THE WORKAROUND I USE.įirstly, "Automatic Propagation" is stupid. YES, AE WILL GETS YOU IN A UNRECOVERABLE AND INFINITE LOOP OF PROPAGATION. Just dropping name of big companies who use AE doesn't mean nobody never got the same issues too. It is infuriating, and frankly, this should be addressed seriously by Adobe. JUST READ IT.įirstly, I've been in your situation too. If you have never encountered this issue, or have no experience with the issue, then you are welcome to post a comment in a DIFFERENT thread about something else.īefore someone gets brutally murdered over this, here's how I do it. The question is not "How do we edit videos just like you?" or "What we should change about ourselves to be better editors?" The question in this thread is "How do we stop AE from going back and re-propagating every previous frame when we click literally anything in the software?" Just let me fix frame 51 and continue working. I don't want it to go back and re-do the first 50 frames (while stopping me from doing anything else) just because I spotted a mistake on frame 51. ![]() Like, all I want to do is brush the first frame, advance automatically, and then fix it when it makes a mistake, just like I would with a Track Mask or in Mocha. ![]() If you click a different window, return to After Effects and accidentally click something to get back into the window, Propagate. If you simply move the playhead to a different part (even something you have already brushed), Propagate. ![]() Then as soon as we try to click literally ANYTHING, After Effects calls timeout and forces us to wait while the Rotobrush "propagates frame of ". Some random green rectangle covering an arbitrary number of frames that isn't the entire comp appears and an arrow somewhere in the middle of it points either left or right (I guess it flips a coin or something). We select the rotobrush and work on a frame. This is what is happening: We double click the layer in our comp so it opens up the layer panel. I have been researching this issue for a few days now, and it seems like there are just a few people in this unlucky "club" while everyone else just spews random useless suggestions on how to fix some alternate issue they made up in their head.
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