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32 lines
1.2 KiB
32 lines
1.2 KiB
AlphaPose - Frequently Asked Question (FAQ)
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============================================
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## FAQ
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1. [Can't open webcan or video file](#Can't-open-webcan-or-video-file)
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## FAQ
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### Can't open webcam or video file
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**Q:** - I can't open the webcam or video file.
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**A**: Try re-install `opencv-python` with version >= 3.3.1.11 by
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```
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pip3 uninstall opencv_python
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pip3 install opencv_python --user
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```
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Many people meet this problem at https://github.com/opencv/opencv/issues/8471. The solution I use is
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```
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sudo cp <path to opencv source repo>/build/lib/python3/cv2.cpython-35m-x86_64-linux-gnu.so /usr/local/lib/python3.5/dist-packages/cv2/cv2.cpython-35m-x86_64-linux-gnu.so
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```
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The idea is to replace the cv2.so library provided by pypi with the one compiled from sources. You can check for more info at https://github.com/opencv/opencv/issues/8471.
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### Can't open webcam
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**Q:** - I can't open the webcam with the latest `opencv-python`
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**A**: Check if your device is valid by
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```
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ls /dev/video*
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```
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Usually you can find `video0`, but if you have a device with other index like `video3`, you can run the program by
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```
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python3 webcam_demo.py --webcam 3 --outdir examples/res --vis
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``` |