[HELP] Progressive to Interlaced - HOW?!

[Selur]

I'm trying to put my 1080p60 videos on blu-rays for my family.

What resolution and frame rate are you aiming for?
Personally, I would either go for 720p60 to keep the fluidity of the source or enable "x264->Frame->Advanced Frame Settings->Fake interlaced encoding flag" to encode 1080p60 content interlaced (x264 uses MBAFF='Macroblock-Adaptive Frame/Field Coding' and thus allows 60p content to be 'masked' as '60i' content.)

If you are aiming for 'real' 1080i60 which I assume, you would use one of the methods under Frame->Reduction to go for 30fps and then configure the encoder to produce interlaced output. If you are aiming for SD resolutions, you would also need to adjust the resolution&co.

I would recommend enabling 'x264->Base->Restriction Settings->Hardware' and set it to 'Blu-ray/AVCHD'.

Cu Selur