Get synchronize frames based on different FPS

two_camera_sync_frame.py

video_1_path = "1.mp4"
video_2_path = "2.mp4"

paths = [video_1_path, video_2_path]

vid_caps = {idx+1: cv2.VideoCapture(path_) for idx, path_ in enumerate(paths)}

tracebar_video = 1
tracebar_frame = 15000

second_video = tracebar_video-1 if tracebar_video%2==0 else tracebar_video+1
print("second_video", second_video)

greater_cap = tracebar_video if vid_caps[tracebar_video].get(cv2.CAP_PROP_FPS) > vid_caps[second_video].get(cv2.CAP_PROP_FPS) else second_video
print("greater_cap" , greater_cap)
sum_flag = True if tracebar_video == greater_cap else False
print("sum_flag", sum_flag)

fps_diff = abs(vid_caps[tracebar_video].get(cv2.CAP_PROP_FPS) - vid_caps[second_video].get(cv2.CAP_PROP_FPS))

print("fps_diff", fps_diff)

tracebar_footer_frames = vid_caps[tracebar_video].get(cv2.CAP_PROP_FRAME_COUNT) - tracebar_frame

print("tracebar_footer_frames", tracebar_footer_frames)

frames_adjustment = ((tracebar_footer_frames / vid_caps[tracebar_video].get(cv2.CAP_PROP_FPS)) * fps_diff)

print("frames_adjustment", frames_adjustment)

second_video_frames = vid_caps[second_video].get(cv2.CAP_PROP_FRAME_COUNT) - tracebar_footer_frames
second_video_frames = (second_video_frames + frames_adjustment if sum_flag else second_video_frames - frames_adjustment)

print("second_video_frames", second_video_frames)

vid_caps[tracebar_video].set(cv2.CAP_PROP_POS_FRAMES, tracebar_frame)
vid_caps[second_video].set(cv2.CAP_PROP_POS_FRAMES, second_video_frames)

_, frame1 = vid_caps[tracebar_video].read()
_, frame2 = vid_caps[second_video].read()

cv2.imwrite("frame1.jpg", frame1)
cv2.imwrite("frame2.jpg", frame2)