[mythtvnz] High CPU usage decoding 720p

[Steven Ellis]

On Fri, February 29, 2008 1:00 pm, Kenneth Dixon wrote:
> Ah, it's not a big deal for me if its a matter of waiting
> for software to catch up. I am hoping every thing is usable
> by the time Mythbuntu 8.04 is released though, so I can
> retire Myth-Box Mk2 (though it as served me well). As long
> as Mk3's hardware is up to it.
> Thanks, for the input.
>
> Ken

Ken - Have a try with a stand alone build of mplayer of SVN on the same
hardware and see how you get on for performance.

Steve

>
> ----- Original Message Follows -----
>> >
>> > ----- Original Message Follows -----
>> >> You could try building ffmpeg with the cabac patch
>> which >> allows threading of this portion of the decoding
>> process. >> It's not yet in ffmpeg mainline, as there are
>> possible >> issues with some types of options (MBAFF I
>> think - not >> sure if this will affect NZ freeview
>> transmissions)
>>
>> mythtv (even fixes-0.21) has problems with NZ's DVB-T as
>> you get lots of:
>>
>> h264 @ 0x86a46b0]Interlaced pictures + spatial direct mode
>> is not  implemented
>>
>> error messages becuase of the MBAFF encoded h264.  mythtv
>> uses its own  internal version of ffmpeg which won't get
>> updated for a while etc so  I  dunno a way to use an
>> external version (like mplayer's version etc) I have an
>> AMD 4800+ and get about the same. I still can't get the
>> AAC audio  working on TV1, but I'l keeping at it when I
>> get time.
>>
>> Thanks
>> Craig
>>
>>
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--------------------------------------------
Steven Ellis - Technical Director
OpenMedia Limited - The Home of myPVR
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