Demos of OpenCV, read/write videos, etc.
Python Image and Video Read/Write Examples
Functions to write multipage images and make videos from Numpy arrays. Also includes functions to test Matlab and Python OpenCV codecs.
python -m pip install -e .
Convert_HDF5_to_AVI.py converts HDF5 video data to AVI.
Typically used in biomedical and science imaging, where they use HDF5 instead of TIFF,
since HDF5 is a very widespread, fast file format that can store arbitrarily large datasets and metadata.
It is recommended to researchers to use HDF5 instead of TIFF, FITS, CDF or proprietary
formats for large data streams, including lossless video.
image_write_multipage.py demonstration of writing multipage TIFF from
Numpy arrays, using
tifffile and freeimage (tifffile is 20x faster and
much more featureful)
imageconv.py converts large directory of files with same prefix to multipage TIFFs
audio_*.py scripts show several methods for generating audio
output from Python.
Python lossless AVI writing
You can write AVI from Python without axes labels (openCV) or with labels/axes (Matplotlib)
OpenCV AVI writing
Demo_OpenCV_writeAVI.py demonstrates using OpenCV to write video, with a lot of codecs to try. This does not insert any of the axes stuff that Matplotlib does, so it can be useful for machine vision work. You can optinally overlay dynamic text on the video.
Matplotlib AVI writing
matplotlib_writeavi.py writes axes labels
AVIs lossless using Matplotlib. Note that file-based
matplotlib.animation.writers['ffmpeg_file'] is used for better
reliability, even though it takes twice as long as the pipe-based
ffmpeg. On some computers, pipe-based
matplotlib.animation.writers['ffmpeg'] results in very distorted,
scrambled output for some reason, with Matplotlib 1.5 and 2.0. In that
case, I have empirically found
ffmpeg_file to Just Work.
libfreeimage, how to fix them: https://www.scivision.co/writing-multipage-tiff-with-python/
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