vlc-vlcj chroma problem

[hdenizvlan]

Hi,
I am trying to use 64 bit vlc (2.2.4) and vlcj (2.2.0) (In the past I used 1.2.0 vlcj and a compatible vlc for that). DirectMediaPlayer class constructor I used before is now deprecated. The new one forces me to use BufferFormatCallback and it returns BufferFormat type. Could you please explain how I can use the chroma and other parameters in the BufferFormat class ? Is there a default ? Or does the chroma code depend on the video type ? Could you please provide help on the subject ?