Video Capture Not Opening error on Docker

[d-bohn]

Hey,

Great package. Thank you for developing this!

I'm trying to get this package up and running in a docker image (Ubuntu 18.04), and everything seems to go smoothly until I try and run the video example. When I run it I get:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.6/dist-packages/fer/classes.py", line 176, in analyze
    assert self.cap.open(self.filepath), "Video capture not opening"
AssertionError: Video capture not opening

I'm assuming that this is because in docker you can't open Xwindow by default, so I turned the display=True to display=False but I still get the error. The image example works fine. Outside of docker, I can run the video example OK, and can even run:

raw_data = video.analyze(detector, display=False, output="pandas", annotate_frames=False, save_frames=False)

Without it opening an additional window. Any ideas on a work-around?

Thanks

PS - I noticed when I built my docker image that you are missing requests from requirements.txt, and some of the code seems to only be compatible with python >= 3.6, not 3.4. Just a heads up!

[JustinShenk]

Thanks for your feedback and suggestions! I updated requirements and fixed a bug in the pandas and csv conversions in 61afcaa. Please feel free to try the new fer==0.1.2.

Regarding the docker issue, can you provide the code where this issue occurs? I didn't have the same problem, but it may be due to the docker image. Please try it with something similar:

FROM jjanzic/docker-python3-opencv

COPY . /usr/local/src

WORKDIR /usr/local/src

RUN pip3 install fer

ENTRYPOINT ["bash"]

The opencv installed must have support for FFMPEG to handle video capture, and not all pip binaries are built with that.

[JustinShenk]

@d-bohn. I ran into the same issue on Travis CI, and fixed it by unpinning the opencv version and adding both opencv-python and opencv-contrib-python. Please try again with fer==0.1.3.

[JustinShenk]

Closing issue.