StopGo works on Linux and Windows operating systems. We do not currently have a version for Mac OS (yet!).
When you download the Linux version, you don’t get installers for VLC and FFmpeg, because on Linux you can install them from your software repository. If you use the terminal, you can install with your package manager directly; for instance:
sudo apt install vlc ffmpeg or
sudo dnf install vlc ffmpeg. If you’re not clear on how to install stuff on Linux, try asking for help on LinuxQuestions.org.
If you want to use an external USB webcam connect it to your computer prior to opening StopGo. StopGo will also work with built-in computer cameras.
When you first open StopGo it will prompt you to create a new project or open a pre-existing project. StopGo will not allow you to capture frames until you create a new project or open a pre-existing project.
To open a new project go to the File menu and select “New”. A dialog box will open, choose a location and name for your new project then select “Save”.
To open a pre-existing project go to the File menu and select “Open”. A dialog box will open, select the desired project from your project folder then select “Open”.
Select a camera from the drop-down menu on the right hand side of the screen. If the desired camera is not appearing in the menu check the connection then restart StopGo to refresh the menu.
Press the capture button to take one frame. One frame is the equivalent of one picture. You need to take 12 frames to create one second of animation.
Onion-skin allows you to see the current video feed overlaid on top of the previous frame. This feature can help you determine how much you should change your image. To create smooth animation we recommend making small changes between frames.
Click on any frame within the timeline to select it. Selected frames will turn gray.
Press the Delete Key on the number pad or go to the Edit menu and select “Delete” to remove the selected frame.
Deleting a frame will permanently remove it. You can only undo the last frame that was deleted.
Select a frame in the timeline, then press the “Play” button. Selected frames will turn gray. Animations will always start from the beginning of the timeline no matter which frame you select.
Returning to Capture Mode
Deselect gray frames to return to capture mode. You cannot capture new frames when a frame is selected in the timeline.
Rendering exports your captured frames into a self-contained movie that you can send to friends or post online.
Go to the File menu and select “Render”. A dialog box will open, choose where to save your movie then select “Save”. A red bar will appear at the bottom of the application, do not close StopGo until the render is complete.
StopGo is an Open Source project hosted on GitHub so anyone can submit bug reports, feature requests, and help fix our code.
The programme is written in Python and wxWidgets and uses VLC. There are already some issues listed if you want to get started contributing to the project.
StopGo on GitHub: github.com/notklaatu/stopgo