update version 2.1.5 on conda-forge?

[zhiruiwang]

The outdated version on conda-forge requires ffmpeg version as 2.8.*, which conflicts with lost of packages that depends on newer version of ffmpeg, including opencv. I have tried to update the recipe on conda-forge and made a pull request, but not all checks are passed and I am not familiar with that. Would the developers like to update the package on conda-forge to the newest 2.1.5? Thanks a lot.