napari plugin for reading videos.
Napari plugin for working with videos.
Relies on pyvideoreader as a backend which itself uses opencv for reading videos.
pip install napari[all] napari_video
From a terminal:
Or from within python:
import napari from napari_video.napari_video import VideoReaderNP path='video.mp4' vr = VideoReaderNP(path) with napari.gui_qt(): viewer = napari.view_image(vr, name=path)
napari_video.napari_video.VideoReaderNP exposes a video with a numpy-like interface, using opencv as a backend.
For instance, open a video:
vr = VideoReaderNP('video.avi') print(vr)
video.avi with 60932 frames of size (920, 912, 3) at 100.00 fps
vrwill return the 100th frame as a numpy array with shape
(902, 912, 3).
vr[100:200:10]will return 10 frames evenly spaced between frame number 100 and 200 (shape
(10, 902, 912, 3)).
- Note that by default, single-frame and slice indexing return 3D and 4D arrays, respectively. To consistently return 4D arrays, open the video with
vrwill then return a
(1, 902, 912, 3)array.
- We can also request specific ROIs and channels. For instance,
vr[100:200:10,100:400,800:850,1]will return an array with shape
(10, 300, 50, 1).
- 23 August 2022
- 27 February 2021
- Stars: 7
- Forks: 3
- Issues + PRs: 0