Low FPS with CrystalHD and Tvheadend

Hello,

I'm experiencing very low FPS - 15fps for standard def and about 10fps for HD in XBMC+PVR when using the Tvheadend add-on

I'm using XBMC+PVR on an Apple TV (first generation) with a CrystalHD card and attempting to watch live tv. I'm connecting to a Ubuntu server running Tvheadend with a Hauppauge HVR-1600 tuner.

Some google-fu indicates that the XBMC Tvheadend add-on isn't working with the CrystalHD card due to a codec incompatibility. The posts indicate that Tvheadend uses ff-h264 while other video types support chd-h264 which is compatible with the CrystalHD decoder.

Can anyone offer some guidance on how to work around this? Perhaps I need to install a nightly build of Tvheadend or XBMC?

Thanks for your help

Steven

I was working on this but priorities shifted and I postponed it. cHD needs some extra data not provided by the pvr demux client when opening cHD. If you are bored you can try my experimental work:

https://github.com/FernetMenta/xbmc/commits/pvr/