matlab movie2avi(movobj_I, filename, 'compression', 'None');改写成pytho
时间: 2024-01-26 13:05:13 浏览: 30
n该怎么写?
在 Python 中,可以使用 OpenCV 库作为替代来处理视频。以下是一个可能的示例代码:
import cv2
# 读取MOV文件
video = cv2.VideoCapture('my_video.mov')
# 获取视频参数
fps = int(video.get(cv2.CAP_PROP_FPS))
width = int(video.get(cv2.CAP_PROP_FRAME_WIDTH))
height = int(video.get(cv2.CAP_PROP_FRAME_HEIGHT))
# 定义输出的视频格式和名称
fourcc = cv2.VideoWriter_fourcc(*'MJPG')
output_video = cv2.VideoWriter('output_video.avi', fourcc, fps, (width, height), True)
# 循环读取每一帧并写入输出视频
while True:
ret, frame = video.read()
if not ret:
break
output_video.write(frame)
# 释放所有资源
video.release()
output_video.release()
cv2.destroyAllWindows()
相关问题
matlab movie2avi(movobj_I, filename, 'compression', 'None')改写成python
的代码应该怎么写?
在Python中,可以使用moviepy库中的write_videofile()函数将视频文件保存为AVI格式。下面是写入未压缩AVI文件的示例代码:
from moviepy.editor import *
clip = VideoFileClip(movobj_I)
clip.write_videofile(filename, codec='rawvideo', fps=fps)
请注意,在此示例中,movobj_I参数应为视频文件的路径。
matlab movie2avi(movobj_I, filename, 'compression', 'None');改写成python
中的语句是什么?
在Python中,可以使用OpenCV库来创建视频。下面是使用OpenCV库将视频轨迹数组(或numpy数组)保存为AVI文件的代码示例:
import cv2
import numpy as np
from numpy import ndarray
def save_to_video(tracks: ndarray, filename: str):
"""
Save the tracks as a video.
:param tracks: A numpy ndarray with shape (frames, tracks, 2).
:param filename: The name/path of the output video file.
"""
h, w, _ = tracks[0].shape
fourcc = cv2.VideoWriter_fourcc(*'XVID')
out = cv2.VideoWriter(filename, fourcc, 20.0, (w, h))
for i in range(len(tracks)):
frame_tracks = tracks[i]
frame = np.zeros((h, w, 3), dtype=np.uint8)
for j in range(len(frame_tracks)):
pt1 = tuple(frame_tracks[j, 0])
pt2 = tuple(frame_tracks[j, 1])
cv2.line(frame, pt1, pt2, (255, 0, 0), 2)
out.write(frame)
out.release()
调用该函数与传递待保存的数组和要保存的文件名。例如:
save_to_video(movobj_I, 'output.avi')