Bug in calculating width and height in FFMpeg::Movie

[ndendi]

Typically rotation is set to null for many videos but sometimes it can be set to 0.
Rotation = 0 shouldn't swap the width and height in my opinion. This has caused problems by returning incorrect resolution for some of the videos we have.

I can send a fix for this if you agree this is an issue.
My fix is to add rotation == 0 check at
https://github.com/streamio/streamio-ffmpeg/blob/master/lib/ffmpeg/movie.rb#L159

[ndendi]

Hello, commenting to bring this on top.

[marcoadkins]

Bumping this as I am having the same issue currently with a few videos.