python - VideoCapture Does Not Work in Anaconda

Question

I am using ubuntu 14.04, and have anaconda python installed. I used conda install opencv and conda install cv2 to install opencv. However I am unable to use the VideoCapture at all (I need to process videos frames by frames). I need to use anaconda for the rest of the project.

Here is my code:

import cv2
import os
capture = cv2.VideoCapture('/home/Downloads/data/zfH2XdRcH14.mp4')
while not capture.isOpened():
    print 'noob'
while True:
    ret, frame = capture.read()
    cv2.imwrite('~/Downloads/data/pic.png',frame)
    cv2.imshow('Video', frame)
    count += 1
    print count

The code keeps printing noob. I have checked the location multiple times and it is correct. I have no clue what the issue is and I have been stuck on this for hours.

Answer 1

ffmpeg is not present in default conda channel.

You need to download opencv from conda-forge channel which contains latest and additional packages and dependencies for video processing. Try the following:

conda install -c conda-forge ffmpeg
conda install -c conda-forge opencv

Here -c tells which channel to use. In our case we need 'conda-forge'.