Problem transcoding 3D OU mkvs

Hi, i’ve been trying to transcode 3D mkvs in OU mode (up/down) but i’m getting a very small horizontal picture, there are two big black bars in each side, height is ok. With SBS (left/right) mkvs there is no problem. And with direct playing it’s ok too.

it could be a problem in the way transcoder calculates the width maybe?

Sorry i forgot to say that i’m trying in a samsung bd player and in the web player and it happens in both of them.

Thanks in advance