You need these dev libraries:
- Qt >= 5.6,
- OpenColorIO,
- OpenImageIO >= 1.6,
- OpenEXR,
- OpenGL,
- FFmpeg (>= 3.0) && (!= 4.3)
On Arch (and Arch-derived distros), just install the application package - it'll include the dev libraries along with it. On Debian (and Debian-derived such as Ubuntu), the packages you'll need will have a -dev suffix.
Olive uses CMake to build, so install that. NOT Qmake as in 0.1.x!
git clone https://github.com/olive-editor/olive
You should have a new folder on your computer with the name "olive". Enter that directory (cd olive)
Make a new folder inside and call it build, built, or whatever, just to keep everything tidy. Enter that directory.
Have CMake set up Olive by running:
cmake -DCMAKE_BUILD_TYPE=Debug ..
The Debug build type is set for now, since backtraces (basically a long cryptic log showing the devs what happened from the inside) are very much needed at this stage.
After CMake has set up Olive, run make.
This assumes you have gdb installed.
Run Olive with gdb olive-editor. If something like (No debugging symbols found in olive-editor) appears, that means that Olive hasn't successfully compiled in Debug mode, and any backtraces it makes will be less useful.
The gdb prompt will appear instead of Olive. To run Olive itself, enter run, or just r. Use Olive for whatever you want and play around with it until something goes south or straight-up crashes.
When Olive crashes, the application itself will freeze, but the terminal will have a Type <RET> for more, at the bottom or tell you that it receives SIGSEGV or some other error.
When that happens, type in backtrace or bt. It's going to give you a really long output, but if you compiled it in Debug mode, it will show precisely what went wrong as well as the chain of events that led to it.
Also refer here, under "advanced debug log".
FFmpeg 4.3 introduced a bug that causes Olive to crash upon adding a clip to the timeline. To work around this, you'll have to install FFmpeg <= 4.2 or the latest git version.
If you are using the latest version from git, it's version number will trip CMake processing. To get around it, in Olive's CMakeLists.txt replace find_package(FFMPEG 3.0 REQUIRED) with find_package(FFMPEG REQUIRED), then compile again.