Extract Images from Video Using OpenCV in Python

Mar 25, 2020

Tips and Traps¶

Most videoes have a FPS of 24. Some videos have higher FPS (e.g., 30 or 60) so that they can capture motions better. A record video on a computer has a FPS of the refresh rate of the monitor, which is usually 60. You can get the FPS of a video using OpenCV in Python.

Oct 31, 2020

Jul 29, 2021

Apr 26, 2021

You can build a portable Python environment following steps below.

Install python-build-standalone.
Install Python packages using pip of the installed python-build-standalone distribution.
Pack the whole python-build-standalone directory into a compressed file, e.g., env.tar.gz.

The GitHub repo dclong/python-portable has good examples of building portable Python environments leveraging …

Apr 30, 2021

python-build-standalone is a better alternative to conda-pack on managing Python dependencies for PySpark. Please refer to Packaging Python Dependencies for PySpark Using python-build-standalone for tutorials on how to use python-build-standalone to manage Python dependencies for PySpark.

Please refer to the GitHub repo dclong/conda_environ …

Mar 20, 2020

list is essentially a resizable array of objects in Python.
Almosts all methods of list are in-place.
list.pop is inplace and returns the removed element.
To get unique elements in a list, you can first coerce the list to a set and then convert the set back to a list.
```
 unique_list = list(set(alist))
```