Terminal Video Player

import sys
import os
import time
from argparse import ArgumentParser
import numpy as np
import cv2
from numpy.testing._private.utils import tempdir
from colorparams import color

def image_resize(image, width=None, height=None, inter=cv2.INTER_AREA):
    dim = None
    (h, w) = image.shape[:2]
    if width is None and height is None:
        return image
    if width is None:
        r = height / float(h)
        dim = (int(w * r), height)
    else:
        r = width / float(w)
        dim = (width, int(h * r))
    resized = cv2.resize(image, dim, interpolation=inter)
    return resized

def frame_to_ascii_grayscale(img):
    chars = np.asarray(list("@%#*+=-:. "))

    img = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
    img = (img / 255.) * (len(chars) - 1)

    out = ""
    out_arr = chars[img.astype(int)]
    for i, r in enumerate(out_arr):
        out += "".join(r) + '\n'

    return out

def render_frame(ascii_img, terminal_size):
    sys.stdout.write("\033[{}F".format(terminal_size.lines - 2))
    ascii_img = ascii_img.rstrip('\n')
    print(ascii_img)

parser = ArgumentParser()
parser.add_argument("-i", "--image", help="path to image file", type=str)
parser.add_argument("-v", "--video", help="path to video file", type=str)
parser.add_argument("-c", "--color", help="grayscale or colored output", type=bool)
args = parser.parse_args()

if not args.image and not args.video:
    print("Give one of two paths")
    print(parser.print_help())
    exit(-1)
if args.image and args.video:
    print("Give one of two paths!")
    print(parser.print_help())
    exit(-1)

terminal_size = os.get_terminal_size()
os.system('cls' if os.name == 'nt' else 'clear')

if args.image:
    img = cv2.imread(args.image)
    assert img is not None, "Give a valid path to the image"

    if img.shape[1] > img.shape[0]:
        img = image_resize(img, height=terminal_size.lines - 2)
    else:
        img = image_resize(img, width=terminal_size.width)

    frame = frame_to_ascii_grayscale(img)
    render_frame(frame, terminal_size)
else:
    cap = cv2.VideoCapture(args.video)
    assert cap.isOpened(), "Error opening video file"

    while cap.isOpened():
        ret, img = cap.read()
        if not ret:
            break

        img = cv2.resize(img, (img.shape[1], img.shape[0] // 2))

        if img.shape[1] > img.shape[0]:
            img = image_resize(img, height=terminal_size.lines - 2)
        else:
            img = image_resize(img, width=terminal_size.width)

        frame = frame_to_ascii_grayscale(img)
        render_frame(frame, terminal_size)

    cap.release()
    cv2.destroyAllWindows()