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stereo_video_recoder.py
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stereo_video_recoder.py
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import numpy as np
import cv2
from datetime import datetime
import os
import time
import math
"""
CONFIG
"""
CAMERA_DEVISE_L = 0
CAMERA_DEVISE_R = 2
IMAGE_WIDTH = 320
IMAGE_HEIGHT = 240
SAVED_FOLDER = 'videos'
PREFERED_FRAME_RATE = 15
"""
"""
if not os.path.exists(SAVED_FOLDER):
os.mkdir(SAVED_FOLDER)
capl = cv2.VideoCapture(CAMERA_DEVISE_L)
capl.set(cv2.CAP_PROP_FRAME_WIDTH, IMAGE_WIDTH)
capl.set(cv2.CAP_PROP_FRAME_HEIGHT, IMAGE_HEIGHT)
capr = cv2.VideoCapture(CAMERA_DEVISE_R)
capr.set(cv2.CAP_PROP_FRAME_WIDTH, IMAGE_WIDTH)
capr.set(cv2.CAP_PROP_FRAME_HEIGHT, IMAGE_HEIGHT)
is_recording = False
recl = None
recr = None
frame_rate = 0
last_update_time = time.time()
pathl = ''
pathr = ''
lbuttonup = False
mbuttonup = False
def mouse_event(event, x, y, flags, param):
global lbuttonup, mbuttonup
if event == cv2.EVENT_MBUTTONUP:
mbuttonup = True
elif event == cv2.EVENT_LBUTTONUP:
lbuttonup = True
cv2.namedWindow("screen", cv2.WINDOW_NORMAL)
cv2.setWindowProperty('screen', cv2.WND_PROP_FULLSCREEN, cv2.WINDOW_FULLSCREEN)
cv2.setMouseCallback("screen", mouse_event)
while True:
if not (capl.grab() and capr.grab()):
print("No more frames")
break
ret, framel = capl.read()
ret, framer = capr.read()
if is_recording:
if recl is not None:
recl.write(framel)
if recr is not None:
recr.write(framer)
# 画面に表示する
screen = cv2.hconcat([framel, framer])
if is_recording and math.sin(2.0 * math.pi * time.time() / 2.0) > -0.75:
screen = cv2.circle(screen,(10,10), 8, (0,0,255), -1)
cv2.putText(screen, 'REC', (20, 15), cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0, 0, 255), thickness=2)
cv2.imshow('screen', screen)
frame_rate = min(int((1.0 / (time.time() - last_update_time)) * 2.0 + frame_rate) / 3.0, PREFERED_FRAME_RATE)
if frame_rate < PREFERED_FRAME_RATE:
print('[WARNING] frame rate is lower than preferd one. now frame_rate: ', frame_rate)
wait_time = 1
if(frame_rate != 0.0):
wait_time = int((1.0 / frame_rate - (time.time() - last_update_time)) * 1000)
# print(wait_time)
if(wait_time <= 0):
wait_time = 1
key = cv2.waitKey(wait_time) & 0xFF
# q or esc が押された場合は終了する
if key == ord('q') or key == 27 or mbuttonup:
break
if key == ord('r') or lbuttonup:
if is_recording:
recl.release()
recr.release()
recl = None
recr = None
print("[NOTE] Save file. {}".format(pathl))
print("[NOTE] Save file. {}".format(pathr))
is_recording = False
else:
print("[NOTE] Start Recording!")
filename_base = datetime.now().strftime("%Y%m%d-%H%M%S")
pathl = SAVED_FOLDER + '/' + filename_base + "-Left.avi"
pathr = SAVED_FOLDER + '/' + filename_base + "-Right.avi"
recl = cv2.VideoWriter(pathl,
cv2.VideoWriter_fourcc(*'mp4v'),
frame_rate,
(IMAGE_WIDTH, IMAGE_HEIGHT), True)
recr = cv2.VideoWriter(pathr,
cv2.VideoWriter_fourcc(*'mp4v'),
frame_rate,
(IMAGE_WIDTH, IMAGE_HEIGHT), True)
is_recording = True
lbuttonup = False
mbuttonup = False
last_update_time = time.time()
# キャプチャの後始末と，ウィンドウをすべて消す
if is_recording:
recl.release()
recr.release()
print("[NOTE] Save file. {}".format(pathl))
print("[NOTE] Save file. {}".format(pathr))
capl.release()
capr.release()
cv2.destroyAllWindows()