使用opencv python以mp4格式编写视频

Question

i can save the video in .avi format.but i am unable to write the video in mp4 format. im using opencv3

 fourcc = cv2.VideoWriter_fourcc(*'XVID')  
 out = cv2.VideoWriter('output.avi',fourcc, 20.0, (640,480))

above portion of code saves the video in .avi format.

Answer 1

for making mp4 videos you can

VideoWriter_fourcc(*'MP4V')

you can see all fourcc codecs in https://www.fourcc.org/codecs.php

Answer 2

fourcc = cv2.VideoWriter_fourcc(*'mp4v')

and I don't get any errors.

if using fourcc = cv2.VideoWriter_fourcc(*'MPV4'), I get

OpenCV: FFMPEG: fallback to use tag 0x7634706d/'mp4v'

Answer 3

Follow this link :

you should replace:

 fourcc = cv2.VideoWriter_fourcc(*'XVID') 

by:

 fourcc = cv2.VideoWriter_fourcc(*'FMP4')

I tried and succeeded.