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import itertools
import functools

def compare(a, b):
    if isinstance(a, int) and isinstance(b, int):
        if a < b:
            return True
        elif a > b:
            return False
        else:

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from PySide6 import QtCore, QtGui
import shiboken6
import numpy as np

from time import perf_counter

class Points:
    def __init__(self, use_drawNp):
        self.use_drawNp = use_drawNp
        self.alloc(0)

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from pyqtgraph.Qt import QtWidgets
import weakref
import gc

class MyButton(QtWidgets.QPushButton):
    def __init__(self, *args, **kwds):
        super().__init__(*args, **kwds)
        self.clicked.connect(lambda : self.hello())
        # self.clicked.connect(lambda: QtWidgets.QApplication.instance().exit())
        # self.clicked.connect(self.hello)

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import argparse
import importlib
import inspect
from collections import deque
from typing import Any, List, Set, Tuple

def get_nested_members(module, predicate=None) -> List[Tuple[str, Any]]:
    return [
        module_info
        for module_info in inspect.getmembers(module, predicate=predicate)

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FFmpeg Walkthrough

basics

ffmpeg is a command line utility that presents a API to interacting with a variety of media types/encodings in a uniform fashion.

Depending on the ffmpeg distribiont, you may get access to utilities such as ffprobe (which provides information on a file) and ffplay (will play back a file). Those tools are critical.

Those tools, by default, will show all the arguments that ffmpeg was compiled with, which can get a little verbose. If you're going to run many ffmpeg commands, I suggest you get used to passing the -hide_banner argument.

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Building a PyQt5/PySide2 macOS Application

Preface

As part of my professional duties, I have been tasked with developing a desktop application to analyze audio files. This desktop application would need to be work across platforms (Windows, macOS and Ubuntu), and I cannot rely on dependencies having already been installed (such as Python itself). Naturally I turned to Qt (and more specifically, Qt for Python) due to its capabilities for creating GUI applications that work across OSs. As I could not be dependent on the end user having Python installed (so no deploying a wheel and calling it good), I decided it may be worth trying to make native installers (deb packages for linux, .app bundles and .dmg files for macOS, and setup.exe files for Windows).

In short, here were the objectives I aimed to have

• Cross-Platform compatible GUI application
• Deployment to users via native installers (no assumption of python being on the target machine)

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FFMpeg DVD Conversion

To get crop geometry:

ffmpeg -i input.mkv -vf cropdetect=24:16:0 dummy.mkv
...
[Parsed_cropdetect_0 @ 0x3704360] x1:0 x2:639 y1:43 y2:317 w:640 h:272 x:0 y:46 pts:181320 t:181.320000 crop=640:272:0:46
...

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tap 'homebrew/fuse'
tap 'homebrew/dupes'
tap 'homebrew/cask'
tap 'homebrew/cask-fonts'
tap 'homebrew/cask-versions'
tap 'homebrew/cask-drivers'

cask_args appdir: '/Applications'

brew 'ack'