Python package to display video in GUI using OpenCV-Python and PySide6

Related tags

Videocv2PySide6
Overview

Python package to display video in GUI using OpenCV-Python and PySide6.

Introduction

cv2PySide6 is a package which provides utility classes and functions that integrate cv2 and PySide6.

With cv2PySide6, you can build pipeline which reads video with PySide6, converts the frame to numpy array for processing with cv2, and casts it back to PySide6 object.

Installation

Before you install, be careful for other Qt-dependent packages installed in your environment. For example, non-headless OpenCV-Python module modifies the Qt dependency thus making PySide6 unavailable.

For quick install, run the following command. This directly installs cv2PySide6 from the repository using pip.

$ pip install git+https://github.com/JSS95/cv2PySide6.git

You can specify the version after an @ at the end of the url. The following command installs cv2PySide6 with version v1.0.0.

$ pip install git+https://github.com/JSS95/[email protected]

How to use

  1. Subclass QVideoFrame2Array to define image processor with custom processArray method.
  2. Set the video sink of QMediaPlayer as frame source of the processor.
  3. Set the image processor as array source of NDArrayVideoWidget.

In PySide6, video frames are acquired as QVideoFrame and passed from QMediaPlayer to QVideoSink, then to QVideoWidget.


Video display pipeline in PySide6

In cv2PySide6, QVideoFrame2Array comes after QVideoSink. This converts the QVideoFrame to numpy.ndarray, process it, then pass to NDArrayVideoWidget. You can subclass QVideoFrame2Array and override processArray with your own image processing.


Video display pipeline in cv2PySide6

Use cases are provided in examples directory.

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Comments
  • refact: add NDArrayVideoPlayer.videoPositionChanged

    refact: add NDArrayVideoPlayer.videoPositionChanged

    VideoController now takes NDArrayVideoPlayer as its player (no QMediaPlayer) NDArrayVideoPlayer now has videoPosition property and videoPositionChanged signal. VideoController updates slider value by videoPositionChanged signal.

    This new videoPositionChanged signal fixes:

    1. Inaccurate media position by long image processing job
    2. Redundant position update when media position changed while media is not playing
    opened by JSS95 0
Releases(v3.1.0)

  • v3.1.0(Jun 4, 2022)

    cv2PySide6 v3.1.0 release

    What's Changed

    • Python dependency is now >= 3.6
    • PySide6 dependency is now >= 6.2

    Full Changelog: https://github.com/JSS95/cv2PySide6/compare/v3.0.0...v3.1.0

    Source code(tar.gz)
    Source code(zip)

  • v3.0.0(Jun 4, 2022)

    cv2PySide6 v3.0.0 release

    Backward incompatible changes

    • ArrayProcessor is removed.
    • FrameToArrayConverter, NDAraryVideoPlayer, NDArrayMediaCaptureSession are moved to videostream.py
    • NDArrayVideoPlayerWidget and NDArrayCameraWidget are redesigned.

    What's Changed

    • feat: introduce MediaController by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/47
    • refact: modify video widgets by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/49
    • refact: remove protocols by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/50
    • refact: remove ArrayProcessor by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/52
    • feat: allow array processing in video widgets by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/67

    Full Changelog: https://github.com/JSS95/cv2PySide6/compare/v2.1.1...v3.0.0

    Source code(tar.gz)
    Source code(zip)

  • v2.1.1(May 17, 2022)

    What's Changed

    • Lint by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/44
    • maint: use type checking by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/45

    Full Changelog: https://github.com/JSS95/cv2PySide6/compare/v2.1.0...v2.1.1

    Source code(tar.gz)
    Source code(zip)

  • v2.1.0(Apr 15, 2022)

    cv2PySide6 v2.1.0 release

    What's Changed

    • feat: add converter() to FrameToArrayConverter by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/42

    Full Changelog: https://github.com/JSS95/cv2PySide6/compare/v2.0.4...v2.1.0

    Source code(tar.gz)
    Source code(zip)

  • v2.0.4(Apr 13, 2022)

    cv2PySide6 v2.0.4 release

    What's Changed

    • fix: fix onSliderValueChange by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/40

    Full Changelog: https://github.com/JSS95/cv2PySide6/compare/v2.0.3...v2.0.4

    Source code(tar.gz)
    Source code(zip)

  • v2.0.3(Apr 13, 2022)

    cv2PySide6 v2.0.3 release

    What's Changed

    • fix: fix onSliderValueChange by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/37

    Full Changelog: https://github.com/JSS95/cv2PySide6/compare/v2.0.2...v2.0.3

    Source code(tar.gz)
    Source code(zip)

  • v2.0.2(Apr 1, 2022)

    cv2PySide6 v2.0.2 release

    What's Changed

    • Fix setVideoPlayer by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/35

    Full Changelog: https://github.com/JSS95/cv2PySide6/compare/v2.0.1...v2.0.2

    Source code(tar.gz)
    Source code(zip)

  • v2.0.1(Apr 1, 2022)

    cv2PySide6 v2.0.1 release

    What's Changed

    • fix: fix stop button connection of NDArrayVideoPlayerWidget by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/32

    Full Changelog: https://github.com/JSS95/cv2PySide6/compare/v2.0.0...v2.0.1

    Source code(tar.gz)
    Source code(zip)

  • v2.0.0(Apr 1, 2022)

    cv2PySide6 v2.0.0 release

    This release greatly breaks backwards compatibility with previous version. Almost all features are changed.

    Full Changelog: https://github.com/JSS95/cv2PySide6/compare/v1.1.1...v2.0.0

    What's Changed

    • refact: redesign video pipeline by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/20
    • refact: use QMediaPlayer.sourceChanged signal by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/21
    • refact: modify module names by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/22
    • feat: introduce NDArrayVideoWidget by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/23
    • feat: introduce NDArrayVideoSeekerWidget by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/24
    • feat: introduce CV2VideoPlayer example by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/25
    • feat: introduce VideoPlayerProtocol by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/26
    • feat: introduce NDArrayCameraWidget by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/27

    Full Changelog: https://github.com/JSS95/cv2PySide6/compare/v1.1.1...v2.0.0

    Source code(tar.gz)
    Source code(zip)

  • v1.1.1(Mar 17, 2022)

    cv2PySide6 v1.1.1 release

    What's Changed

    • fix : allow empty array to setArray by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/17

    Full Changelog: https://github.com/JSS95/cv2PySide6/compare/v1.1.0...v1.1.1

    Source code(tar.gz)
    Source code(zip)

  • v1.1.0(Mar 14, 2022)

    cv2PySide6 v1.1.0 release

    What's Changed

    • refact : use qimage2ndarray package by @JSS95 in https://github.com/JSS95/cv2PySide6/pull/15

    Full Changelog: https://github.com/JSS95/cv2PySide6/compare/v1.0.2...v1.1.0

    Source code(tar.gz)
    Source code(zip)

  • v1.0.2(Dec 29, 2021)

  • v1.0.1(Dec 29, 2021)

  • v1.0.0(Dec 28, 2021)

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