Resize video

Use the Frames.resize() method, which takes a tuple with the desired size as an argument. Let’s resize to (640,360). .. code:: python

>>> import birdwatcher as bw
>>> vfs = bw.VideoFileStream('myvideo.mp4')
>>> (vfs.iter_frames()
...    .resize((640,360))
...    .tovideo('myvideo_resized', framerate=vfs.avgframerate))

Alternatively you can resize by specifying a factor, e.g. 0.5, using the Frames.resizebyfactor() method.

Much of the functionality in terms of video transformations is accessible through Frames objects, which yield video frames. A Frames object can be obtained from a VideoFileStream object using the VideoFileStream.iter_frames() method. Frames objects have many interesting methods,among which Frames.resize(), which yields another Frames object, with resized frames. Frames objects can be used for analyses, but they can also be written as a video file using their Frames.tovideo() method.

More explanation on Frames is provided in our tutorial notebook 1_videoframes