cv2.VideoWriter fails to write *.mp4 video files · Issue #24787

i'm trying to save my video to an mp4 file but at the moment to see the properties of the file saved it has only a few bytes.

总结来说，通过OpenCV和Python，我们可以轻松地保存mp4视频，同时进行各种图像处理操作，如人脸检测。理解并掌握`VideoWriter`类以及相关的编码概念是实现这一 ...

My name is Toan. Currently, I'm using OpenCV-C++ to write video *.mp4 type. I can write video .avi type but It's take a lot of storage. About ...

The attached Python fails to write the *.mp4 file, but succeeds to write the *.avi file when the corresponding line is un-commented.

fourcc = cv2.VideoWriter_fourcc(*'XVID')# 表示MP4 編碼格示，副檔名為.mp4 fourcc = cv2.VideoWriter_fourcc('M', 'P', '4', 'V') fourcc = cv2 ...

I want to capture video from a webcam and save it to an mp4 file using opencv. I found example code on stackoverflow (below) that works great.

How to save video capture in mp4 format with opencv python · cv2.VideoWriter(...) but not all cobinations of codec and file extension can work.

這篇教學會介紹OpenCV 裡的VideoWriter() 方法，透過這個方法，可以將讀取到的影片( 電腦中的影片或攝影鏡頭拍攝的影片)，進行轉檔或轉換色彩，儲存成新的影片檔。

To save a video in OpenCV cv.VideoWriter() method is used. Note: For more information, refer to Introduction to OpenCV.

In this article, we will discuss how to write to a video using OpenCV in Python. Approach Syntax: cap = cv2.VideoCapture(path)