VDA : LIVE TV video playback stuttering on OSX FE ( High End 27" imac)

[trankkilou@…]

Hello Guys,

I'm a mythtv users since 0.21.

I'm using Intel 2.5 ghz dual core under gentoo for Back end and Front end. I got a GT 610 video card (so using vdpau high profile) and everything works very well (live tv 1080i playback, 480p ...) I gonna move in a new house next year and I wanted to buy a mac mini to use it as Frontend ( I think my pc is too noisy). Before buy this imac I looked after info about VDA decoding and in meantime I try the mythfrontend on my high end 27" 2013 Imac ( 3.2 Ghz Quad core i7 , SSD, Geforce 680 Mx 2GB...)

So here started the problems : The live tv video is stutterring for 1080i dvb-t PAL . Of course it is not a network problem (I used to be system & network engineer).

I try every profile / every renderer combinatory and I even force output to 1920x1080 size and I got problems only with VDA active I compile everything from 0.27fixes source with no pb.

In the log the only messages I get, every times it is stuttering is :

GetNextFreeFrame?() unable to lock frame 100 times. Discarding Frames.

Without VDA because as my CPU is very powerfull it could software decode everything even with a greedy desinterlacer (2x interlacer -> 14% CPU....) .

Please note this is worst with 'valid' desinterlacer (many fail to load like greedymotion) Please note with opengl lite it & "interlaced 2x" works better than others in VDA ( 5 mins before seeing the lag instead of 5 sec with every others) Please note no pb without VDA

So now i'm very worried about buying a mac midi to be my next FE...

I can make more tests if you need !

[trankkilou@…]

It seems no one use OSX as FE ?

[Raymond Wagner]

Resetting defaults. Locking due to bump. Cleaning up hideously long description.

[JYA]

The log shows an issue with the compilation/installation.

You wrote that you compile yourself, try one of the mac frontends available on www.avenard.org/files/mythtv/mac