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""" |
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Abhängigkeiten: |
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- cv2 (OpenCV-Paket) |
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- threading |
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- os |
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Autor: Roberto Gelsinger |
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Datum: 07.12.2023 |
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Version: Modulversion |
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""" |
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import cv2 |
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import threading |
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import os |
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from tkinter import simpledialog |
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recording_normal = False |
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recording = False # Globale Variable, um den Aufnahmestatus zu verfolgen |
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recording_finished_event = threading.Event() |
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def start_recording(video_name="aufgenommenes_video", length=5,testcase_resolution1=2560,testcase_resolution2=1440,testcase_fps=20): |
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""" |
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Startet die Videoaufnahme in einem separaten Thread. |
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Args: |
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video_name (str): Der Basisname der Videodatei (Standard ist "aufgenommenes_video"). |
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""" |
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global recording |
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recording = True |
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thread = threading.Thread(target=record_video, args=(video_name, length,testcase_resolution1,testcase_resolution2,testcase_fps)) |
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thread.start() |
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def stop_recording(): |
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""" |
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Beendet die Videoaufnahme, indem der globale 'recording'-Status auf False gesetzt wird. |
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""" |
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global recording |
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recording = False |
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def record_video(video_name="aufgenommenes_video", length=5,testcase_resolution1=2560,testcase_resolution2=1440,testcase_fps=20): |
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""" |
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Nimmt ein Video auf und speichert es im AVI-Format. |
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Die Funktion initialisiert eine Videoaufnahme über die Webcam und speichert das Video in einem vordefinierten Ordner. |
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Die Aufnahme läuft, solange die globale Variable 'recording' auf True gesetzt ist. |
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Args: |
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video_name (str): Der Basisname der Videodatei (Standard ist "aufgenommenes_video"). |
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""" |
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output_folder = "code/videos" |
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output_file = os.path.join(output_folder, video_name + ".avi") |
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frame_rate = testcase_fps |
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cap = cv2.VideoCapture(0) |
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cap.set(cv2.CAP_PROP_FRAME_WIDTH, testcase_resolution1) |
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cap.set(cv2.CAP_PROP_FRAME_HEIGHT, testcase_resolution2) |
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cap.set(cv2.CAP_PROP_FPS, testcase_fps) |
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if not cap.isOpened(): |
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print("Fehler beim Öffnen der Kamera.") |
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return |
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fourcc = cv2.VideoWriter_fourcc(*'XVID') |
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out = cv2.VideoWriter(output_file, fourcc,testcase_fps,(testcase_resolution1, testcase_resolution2) ) |
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total_frames = int(frame_rate * length) # Gesamtzahl der aufzunehmenden Frames |
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frame_count = 0 # Frame-Zähler |
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while frame_count < total_frames: |
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ret, frame = cap.read() |
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if not ret: |
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break |
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out.write(frame) |
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frame_count += 1 |
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cv2.imshow('Recording', frame) |
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if cv2.waitKey(1) & 0xFF == ord('q'): |
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break |
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recording_finished_event.set() |
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recording = False |
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cap.release() |
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out.release() |
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cv2.destroyAllWindows() |
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def stop_normal_recording(): |
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""" |
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Beendet die Videoaufnahme, indem der globale 'recording'-Status auf False gesetzt wird. |
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""" |
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global recording_normal |
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recording_normal = False |
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def start_normal_recording(video_name="aufgenommenes_video",video_resolution1=2560,video_resolution2=1440, fps=20): |
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""" |
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Startet die Videoaufnahme in einem separaten Thread. |
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Args: |
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video_name (str): Der Basisname der Videodatei (Standard ist "aufgenommenes_video"). |
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""" |
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global recording_normal |
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recording_normal = True |
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thread = threading.Thread(target=record_normal_video, args=(video_name,video_resolution1,video_resolution2,fps)) |
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thread.start() |
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def record_normal_video(video_name="aufgenommenes_video",video_resolution1=2560,video_resolution2=1440, fps=20): |
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""" |
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Nimmt ein Video auf und speichert es im AVI-Format. |
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Die Funktion initialisiert eine Videoaufnahme über die Webcam und speichert das Video in einem vordefinierten Ordner. |
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Die Aufnahme läuft, solange die globale Variable 'recording' auf True gesetzt ist. |
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Args: |
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video_name (str): Der Basisname der Videodatei (Standard ist "aufgenommenes_video"). |
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""" |
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output_folder = "code/videos" |
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output_file = os.path.join(output_folder, video_name + ".avi") |
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cap = cv2.VideoCapture(0) |
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cap.set(cv2.CAP_PROP_FRAME_WIDTH, video_resolution1) |
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cap.set(cv2.CAP_PROP_FRAME_HEIGHT, video_resolution2) |
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cap.set(cv2.CAP_PROP_FPS, fps) |
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if not cap.isOpened(): |
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print("Fehler beim Öffnen der Kamera.") |
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return |
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#usefull if you have problems with cam resolutions , for manual debugging |
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#print("video_resolution1:", video_resolution1, "type:", type(video_resolution1)) |
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#print("video_resolution2:", video_resolution2, "type:", type(video_resolution2)) |
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#print("fps:", fps, "type:", type(fps)) |
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#actual_width = cap.get(cv2.CAP_PROP_FRAME_WIDTH) |
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#actual_height = cap.get(cv2.CAP_PROP_FRAME_HEIGHT) |
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#actual_fps = cap.get(cv2.CAP_PROP_FPS) |
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#print("Actual width:", actual_width) |
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#print("Actual height:", actual_height) |
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#print("Actual FPS:", actual_fps) |
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fourcc = cv2.VideoWriter_fourcc(*'XVID') |
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out = cv2.VideoWriter(output_file, fourcc, fps, (video_resolution1, video_resolution2)) |
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if not out.isOpened(): |
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print("Fehler beim Öffnen der Videoausgabedatei.") |
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cap.release() |
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return |
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while recording_normal: |
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ret, frame = cap.read() |
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if not ret: |
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break |
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cv2.imshow('Recording', frame) |
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out.write(frame) |
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if cv2.waitKey(1) & 0xFF == ord('q'): |
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break |
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cap.release() |
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out.release() |
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cv2.destroyAllWindows() |