I feel like there was a way to use Kap to crop to a specific place on the screen, instead of a pre-defined aspect ratio. But now the "Custom" option in the select is disabled and I don't know why.

How do you get the crop behavior? I'm just looking to do what RecordIt does simply.
Platform: macOS Sierra 10.12.6
Kap Version: 2.0.0
You're not the first to ask about this. It's clear we need to improve the UX for that. You can change the number in the input fields for a custom size or click and drag the borders of the cropper view.
Referencing this for #113. Will close since it's a duplicate, but a quick question @ianstormtaylor; would it be easier if the cropper triggered automatically when opening Kap (#358)?
Good question. For me, before I enter Kap I already know what type of recording I want to do, which as far as I can tell is always one of:
The amount each individual type of recording would be used probably varies by person. I personally use rough crop and full app most often because I'm usually trying to capture recordings of reproducing bugs. I could see people creating GIFs for documentation wanting to always keep a specific dimension standard to stay consistent, and there's probably a target audience where full screen is their default.
But this makes me think that right now Kap is exposing lots of "configuration" UI, which isn't necessarily matching with how users think. And instead, it might be good to just expose the decision that users are wanting to make, maybe like:

That's one way to do it, but still might be extra work for the user.
You could instead opt to have the rough crop be the default, since you can actually achieve all of the others by hanging their UX off of the rough crop's, like so:
This all might lead to treating the "cropping" UI as the main UI for Kap. You could imagine something like this:

That menu under (and inside when not enough room) is where things like "record" and "specific app" and even inputs to fine tune the dimensions could go, and it all feels natural.
You could even pop-up a crop region with the previously used size already configured, to aid the documentation recording use case, and to make the menu available right away. People can always re-click/drag to create a new crop region.
You could have a well-understood "close overlay" button somewhere in there, which is a pretty easy thing to communicate to people since it's pretty common.
This starts to feel pretty nice I think.
The menubar icon is reduced to just be "click to enable" and "click to stop". And everything else takes place on the screen itself, right where the content is being recorded. I'd even recommend putting a red record button near the crop area itself.
Also, one of the UX issues is that right now the crop area is hard to see and isn't obvious that it's resizable or draggable in any way. This would be solved by darkening the outsides, but also by adding the recognizable drag handles to it:

Thank you so much for taking the time to write and sketch this up @ianstormtaylor, it's certainly given me a lot of new input to digest and I really appreciate it. Could I ask to you reference this or copy it to #113 so we can keep the discussion going there?
Most helpful comment
Good question. For me, before I enter Kap I already know what type of recording I want to do, which as far as I can tell is always one of:
The amount each individual type of recording would be used probably varies by person. I personally use rough crop and full app most often because I'm usually trying to capture recordings of reproducing bugs. I could see people creating GIFs for documentation wanting to always keep a specific dimension standard to stay consistent, and there's probably a target audience where full screen is their default.
But this makes me think that right now Kap is exposing lots of "configuration" UI, which isn't necessarily matching with how users think. And instead, it might be good to just expose the decision that users are wanting to make, maybe like:
That's one way to do it, but still might be extra work for the user.
You could instead opt to have the rough crop be the default, since you can actually achieve all of the others by hanging their UX off of the rough crop's, like so:
This all might lead to treating the "cropping" UI as the main UI for Kap. You could imagine something like this:
That menu under (and inside when not enough room) is where things like "record" and "specific app" and even inputs to fine tune the dimensions could go, and it all feels natural.
You could even pop-up a crop region with the previously used size already configured, to aid the documentation recording use case, and to make the menu available right away. People can always re-click/drag to create a new crop region.
You could have a well-understood "close overlay" button somewhere in there, which is a pretty easy thing to communicate to people since it's pretty common.
This starts to feel pretty nice I think.
The menubar icon is reduced to just be "click to enable" and "click to stop". And everything else takes place on the screen itself, right where the content is being recorded. I'd even recommend putting a red record button near the crop area itself.
Also, one of the UX issues is that right now the crop area is hard to see and isn't obvious that it's resizable or draggable in any way. This would be solved by darkening the outsides, but also by adding the recognizable drag handles to it: