def RecordCamera(self): #录像功能
tag = self.Record.text()
if tag == '保存':
try:
image_name = self.RecordPath + 'image' + time.strftime(
'%Y%m%d%H%M%S', time.localtime(time.time())) + '.jpg'
self.label.setText(image_name)
imwrite(image_name, self.Image)
except Exception as e:
self.label.setText(e)
elif tag == '录像':
self.Record.setText('停止')
video_name = self.RecordPath + 'video' + time.strftime(
'%Y%m%d%H%M%S', time.localtime(time.time())) + '.avi'
fps = 24 / self.quick.value()
size = (self.Image.shape[1], self.Image.shape[0])
fourcc = VideoWriter_fourcc('M', 'J', 'P', 'G')
self.video_writer = VideoWriter(video_name, fourcc,
self.camera.get(5), size)
self.RecordFlag = 1
self.label.setAlignment(Qt.AlignCenter)
self.label.setText('录像中...')
self.Stop.setEnabled(False)
self.Exit.setEnabled(False)
elif tag == '停止':
self.Record.setText('录像')
self.video_writer.release()
self.RecordFlag = 0
self.label.setText('录像已保存')
self.Stop.setEnabled(True)
self.Exit.setEnabled(True)
def _initialize_record(self, frame):
self._frame_signal.disconnect_(self._initialize_record)
import os
from datetime import datetime
from cv2 import VideoWriter_fourcc as CVCodec
h, w = frame.shape[:2]
self._filename = self._tag + datetime.now().strftime(
"%Y%m%d_%H%M%S") + '.avi'
self._output = VideoWriter('video-archive' + os.sep + self._filename,
CVCodec(*'XVID'),
self._speed if self._speed != 0 else 25.0,
(w, h))
self._frame_signal.connect_(self._output.write)
def make_video(images,
outimg=None,
fps=5,
size=None,
is_color=True,
format="XVID"):
"""
Create a video from a list of images.
@param outvid output video
@param images list of images to use in the video
@param fps frame per second
@param size size of each frame
@param is_color color
@param format see http://www.fourcc.org/codecs.php
@return see http://opencv-python-tutroals.readthedocs.org/en/latest/py_tutorials/py_gui/py_video_display/py_video_display.html
The function relies on http://opencv-python-tutroals.readthedocs.org/en/latest/.
By default, the video will have the size of the first image.
It will resize every image to this size before adding them to the video.
"""
from cv2.cv2 import VideoWriter, VideoWriter_fourcc, imread, resize
fourcc = VideoWriter_fourcc(*format)
vid = None
for image in images:
if not os.path.exists(image):
raise FileNotFoundError(image)
img = imread(image)
if vid is None:
if size is None:
size = img.shape[1], img.shape[0]
vid = VideoWriter(outvid, fourcc, float(fps), size, is_color)
if size[0] != img.shape[1] and size[1] != img.shape[0]:
img = resize(img, size)
vid.write(img)
vid.release()
return vid
def __init__(self, input_filename: str, output_filename: str, codec: str,
window_name: str) -> None:
# OPTIONS
self.input_filename = input_filename
self.output_filename = output_filename
self.window_name = window_name
self.state = PlayerState()
self.hud = HUD(self.state)
self.writer = None
if self.output_filename:
codec = VideoWriter_fourcc(*(codec or 'XVID'))
self.writer = VideoWriter(output_filename, codec, 30, (1280, 720))
self.capture = VideoCapture(input_filename)
if not self.capture.isOpened():
raise Exception("The capture could not be opened")
ok, self.frame = self.capture.read()
if not ok:
raise Exception("The capture could not be read")
self.state.target_fps = self.state.original_fps = self.capture.get(
CAP_PROP_FPS)
imshow(self.window_name, self.frame)
self.selector = Selector(self.window_name)
self.selector.on_selecting = self.on_selecting
self.selector.on_selected = self.on_selected
self.label_uppercase = False
self.meter = TickMeter()
fps = FPS().start()
out = None
# loop over frames from the video file stream
while True:
# grab the frame from the threaded video stream and resize it
# to 500px (to speedup processing)
frame = vs.read()
frame = process_frame(frame, detector, data)
if record:
if out is None:
(h, w) = frame.shape[:2]
out = VideoWriter("outpy.avi",
cv2.VideoWriter_fourcc('M', 'J', 'P', 'G'),
frame_rate, (w, h))
out.write(frame)
# display the image to our screen
cv2.imshow("Frame", frame)
key = cv2.waitKey(1) & 0xFF
# if the `q` key was pressed, break from the loop
if key == ord("q"):
break
# update the FPS counter
fps.update()
def __enter__(self):
self._writer = VideoWriter(self._path,
VideoWriter_fourcc(*self._codec),
self._bitrate, self._dimension)
return self