VideoCapture{filename} about torch-opencv HOT 5 CLOSED

@aronfothi

Hi,
That's strange. On my machine, this code succeeds. I'm sure this isn't related to the bindings. Are you sure you have OpenCV tied to the necessary codec?

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@aronfothi
Did you solve this issue? I've run out of ideas :(

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Not yet. Could you give me a hint how i could detect the missing codec? The cap:isOpened() ->
false does not give me enough info.
(sry for late reply)

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@aronfothi
Try checking this:

1. When installing OpenCV, you should see a report like:

...

--   Video I/O:
--     DC1394 1.x:                  NO
--     DC1394 2.x:                  YES (ver 2.2.1)
--     FFMPEG:                      YES
--       codec:                     YES (ver 53.35.0)
--       format:                    YES (ver 53.21.1)
--       util:                      YES (ver 51.22.1)
--       swscale:                   YES (ver 2.1.0)
--       gentoo-style:              YES
--     GStreamer:                   
--       base:                      YES (ver 0.10.36)
--       app:                       YES (ver 0.10.36)
--       video:                     YES (ver 0.10.36)

Here you can see the codecs that OpenCV had been linked to.

2. Check the codec that your MH.avi is encoded with. Compare.

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It was the problem. It was strange because i installed the ffmpeg just before the OpenCV but somehow it was missing. After reinstall it works well.
Thanks.

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