What will you use it for? If it's to manipulate video data, preprocess, trim, filter it (convolution, denoising, etc), it might be much easier to use [ffms2](https://github.com/FFMS/ffms2)
Or maybe provides bindings to Avisynth (Windows-only) or [VapourSynth](https://github.com/vapoursynth/vapoursynth) (Python lib with C++ backend) If it's to play the video, I can't help you, but there are plenty of opensource video players. Note: I plan "some time"™ to add a video load/save to Arraymancer to easily use, filter, reencode videos in deep learning pipelines (for face/object detection in videos for example) so would be willing to contribute/kickstart FFMPEG/FFMS <-> Nim bindings.
