xlib | Your isomorphic toolbox | Runtime Evironment library

What you are experiencing is the nature of large filtergraphs. Every link between filters requires a frame buffer (at least 6 MB) and filtering operation itself may require additional memory space. So, it must use up your iDevice's memory (which must be smaller than the Androids).

So, the solution must be the one which minimizes the number of filters, and you can do that by using the concat demuxer so all your images originates from one (virtual) source, and use overlay with more complex enable option.

png_list.txt

Your file seems to be missing some color information:

I just reproduced that behavior on my Linux machine.

The problem seems to be a timing problem between your program and the "Window manager".

The "Window manager" is the program which is responsible for drawing the title bar and maybe borders at the windows. The "Window manager" works like this:

Whenever a window is mapped on the root window, the "Window manager" is notified by X11. The "Window manager" creates an "outer window" that contains the title bar and the border. Then it reparents the window so the window becomes a child window of the "outer window".

Example:

If the "Window manager" handles some window after being mapped, it becomes a child window of the "outer window"; for this reason, any window that is not a child window of an "outer window" is obviously not handled by the "Window manager" if it is mapped.

... at least in the "normal case".

For this reason, the "Window manager" does not care about windows that are un-mapped on the root window (but only about windows that are un-mapped from an "outer window").

Normally, the "Window manager" behaves like this:

I finally find the solution. For people who facing the same trouble:

Here is the command I use for create the binary file:

It's possible, but unnecessary.

Instead, wrap it in a class that closes it in the destructor, like you did with the other objects.

Destructors are called in the reverse order, which means that if you create the display first, it'll die last.

The way you would've called it after main is, similarily, from a destructor of a global or function-local static object. A function-local static is better than a global variable because it avoids the static init order fiasco.

discard all events currently in the client's event queue

You can ask libxcb for the next queued event and just delete that. Repeat in a loop until the queue is empty.

I got solution so I answered here, issue is not of flutter_ffmpeg, issue is caused because app had not permission to write in external storage to resolve this add "MANAGE_EXTERNAL_STORAGE" in mainfest.xml file and set output path is File('storage/emulated/0/my_folder/o.mp4').path , and everything works fine.

It seems you are expecting XDrawRectangle() to generate Expose events, but it will never happen, because this is not how it works. Expose events are generated when a window is mapped, resized, moved or when an obscuring window is unmapped, but not when drawing into a window. Actually, the only Expose event you are interesting in is the one generated by XMapWindow(). After receiving this first Expose event you know that window is mapped and can be drawn to. You should also call XClearWindow() before mapping a window to ensure it doesn't contain any garbage. Sometimes you may also want to check if (event.xexpose.count == 0) to process only the latest event in the queue, but it shouldn't be necessary in your example. Then just draw into the window and probably flush the buffer with XFlush() or XSync() after every draw. This should do what you want(I modified coordinates a little bit, but the principle is the same):

fcntl is a mechanism on Linux, not Windows systems.

From the keybind docs:

Requires X11 (X Window System). For UNIX-like systems, e.g. Linux.

https://pypi.org/project/keybind/

You will therefore need a different library for Windows systems.