pixano.datasets.utils.video

create_video_preview(path, frame_urls, fps=25, scale=0.5)

Create a video preview by writing a sequence of frames to a video file.

Parameters:

Name	Type	Description	Default
path	Path	The path to the output video file.	required
frame_urls	Iterable[str]	URLs pointing to the frames of the video.	required
fps	int	The frames per second of the output video.	25
scale	float	The scale factor to resize the frames.	0.5

Source code in pixano/datasets/utils/video.py

def create_video_preview(path: Path, frame_urls: Iterable[str], fps: int = 25, scale: float = 0.5):
    """Create a video preview by writing a sequence of frames to a video file.

    Args:
        path: The path to the output video file.
        frame_urls: URLs pointing to the frames of the video.
        fps: The frames per second of the output video.
        scale: The scale factor to resize the frames.
    """
    # Import mediapy only when needed to avoid unnecessary dependencies.
    import mediapy

    frames = [mediapy.read_image(url) for url in frame_urls]

    if scale < 1:
        size = frames[0].shape[:2]
        target_size = (int(size[0] * scale), int(size[1] * scale))
        frames = mediapy.resize_video(frames, target_size)

    mediapy.write_video(path, frames, fps=fps)