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OpenCV without FFMPEG and GStreamer does not decode a media file

Hi,

Recently, I built the OpenCV 3.3 under Windows with FFMPEG and GStreamer disabled. I noticed that with_DSHOW flag was enabled meaning that even without FFMPEG and GStreamer, OpenCV has to be able to import and decode basic media files (mp4, mov) using DirectShow.

Is there anyone who tried similar experiments and might know why it is not working? Maybe video decoding is still unavailable through DirectShow or I am missing something?

Thanks

OpenCV without FFMPEG and GStreamer does not decode a media file

Hi,

Recently, I built the OpenCV 3.3 under Windows with ~~FFMPEG~~ FFMPEG and ~~GStreamer~~ GStreamer disabled. I noticed that ~~with_DSHOW~~ with_DSHOW flag was enabled meaning that even without FFMPEG and GStreamer, OpenCV has to be able to import and decode basic media files (mp4, mov) using DirectShow.

Is there anyone who tried similar experiments and might know why it is not working? Maybe video decoding is still unavailable through DirectShow or I am missing something?

Thanks