Roto Ae

[Ara Kistner]

Ijust spent a couple hours isolating my object with 100+ frames from the background of a gif with the Roto Brush tool. It seemed to work successfully, I can play it back and it came out how I want. But when I render, it's nothing but a black screen.

I realized that somehow, the layer of the original gif isn't visible in my timeline? So when I try to play my timeline, I see nothing but black. But I can preview the whole gif with the roto brush editing fine in the preview window? How can I bring the Roto Brushed gif back into my timeline to render my work? I'm really hoping I don't have to redo all my work over again.

You do Roto Brush work in the Layer panel, but your Timeline shows its output in the Composition panel. Your GIF doesn't have any length, or if it is, it's sitting outside the bounds of the timeline. The easier way to fix this is to put your Current Time Indicator (playhead) at the first frame and hit the Left Bracket ( [ ) key. This will make your layer jump to the CTI. After that, you can extend the layer's out point to the last frame of your timeline. You can either do this by dragging the out point or moving your CTI to the last frame, making sure the layer is selected, and hitting "Opt+Right Bracket" ( ] ).

Working with 8k Prores HQ File, attempting rotobrush 2 process that I have run before on my M1 Max Macbook Pro just as a test. Can't help but get an error:

"After Effects error: Initializing the Roto Brush 2 models failed. Please change Version to 1.0 (Classic) to continue Roto Brush frame propagation."

The error message is not a bug, but a temporary fix while we work with Apple to get Roto Brush 2 supported on macOS 13.2 and higher. If you roll back to AE 23.2 or earlier, you will instead encounter a crash when trying to use RB2, so I would not recommend that. The best thread to track this issue is here: -effects-bugs/after-effect-crashes-mac-os-ventura-rotobrush/idi-... Once a full fix is available, we will be updating the status of that thread to Fixed.

Hello, I want to use roto brush tool, but it doesn't work. When I choose roto brush tool and start selecting what I want, the whole video border turns purple, meaning the whole image is selected. I don't know what I need to do, to just select what I want.

So I took a screenshot of your screenshot and as I suspected there are very few contrast and color differences in your footage for Rotobrush to work with. I didn't get the entire frame but when I tried to mask out the left leg there was so much of the image selected using the default Rotobrush settings that I could tell that Rotobrush would have a very hard time finding edges. The solution is to do some color correcting before you try and use Rotobrush. My first choice was to add Black and White

Without knowing what your footage looks like, nobody can tell you much. Presumably the footage simply doesn't have enough contrast to allow the tool to detect any edges, but who's to say? You'd have to provide at least a screenshot.

Mylenium: Here is screeonshot. I tried on another video where I know edges are better, but it still didn't work. I tried some things, and I click on the icon I marked with red (set IN point...), and then this one frame where I click it, it choose what I want. But then another frame not anymore. I know this isn't right way to do it, but I guess it shows there are enough edges. So I really don't know what to do.

So I took a screenshot of your screenshot and as I suspected there are very few contrast and color differences in your footage for Rotobrush to work with. I didn't get the entire frame but when I tried to mask out the left leg there was so much of the image selected using the default Rotobrush settings that I could tell that Rotobrush would have a very hard time finding edges. The solution is to do some color correcting before you try and use Rotobrush. My first choice was to add Black and White and really jack the values around. It became much easier to cut out the left leg. When you have the roto completed, propagated and frozen, then you can turn off the color correction or just delete it. I hope this helps.

I'm having that issue, but can't adjust the framerate of the composition. I work with a lot of stop-motion footage of varying framerates, but edit my compositions in 25fps. Pre-composing the footage before trying to roto it doesn't help.

Hey this just happened to me, same purple box around all of the footage in the layer edit panel. I also have footage with a limited amt of contrast, but I find that the RotoBrush (2.0) will still do a pretty good job of pulling something out of the footage, not simply producing a big purple square around the whole frame of the footage.

I realized my footage and composition framerates were off. Footage was 23.976, comp was at 30. I got an error in the bottom of the layer edit panel that said as much. After changing the composition fps to 23.976 in composition settings, I tried the RotoBrush again. The error went away, but still the full purple square.

I deleted my footage from the timeline and re-imported it into the comp from the project panel with the matching fps (footage, 23.976 / Comp @ 23.976), and voila! The RotoBrush performed as expected. Now to adjust that contrast...

Just my 2 cents!

Just a heads up to anyone who does a TIME STRETCH to their clip, AE will ask you to change the comp to the new frame rate. This however doesn't mean it rotobrush will now work. You must revert it back to original time (100 in time stretch settings). Do the rotobrushing and then auto trace....and finally you can times stretch.

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I recently plugged into the roto-machine effect pedal I purchased new about four years ago. There doesn't seem to be much info or support for it even on the Line 6 website. I did a search and It's as though it never existed. No results found! What?

Problem is - it's dead. Battery is good. I apply the footswitch. Red led blinks sporadically but no sound. I pull and push back in the input. A click then a tick,tick,tick,tick - then again nothing. All is dead. It's been packed away for years. It hasn't been asked to work. Now when I want it to, there is nothing. Is this the redhead stepdaughter of line six? Have they discontinued and disowned it? Heavy as it is, I paid too much for this paperweight. At the time I thought the BOSS pedal was all toots and whistles what with the little light show rotating. Now I wonder if that is where I should have put my money.

Thanks Brazzy, I actually did open it (four screws on the bottom), pulled the board and spray cleaned the only contact pin socket. No difference. Usually a few ins and outs will clean the 1/4" contacts enough to get a signal. Did it all.

I noticed there is a pattern to the LED blinking. It blinks four times then is off for the same amount of time. Like: blink,blink,blink,blink, off,off,off,off and so on. Maybe that's a distress signal. Anyway it's always red. Hopefully, Someone else can chime in here, but thanks for your thoughts.

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