[mythtv-users] BD+ cracked in Linux now

[Raymond Wagner]

Mitch Gore wrote:
>
>
> On Mon, Nov 3, 2008 at 4:27 PM, Nicolas Will <nico at youplala.net 
> <mailto:nico at youplala.net>> wrote:
>
>     On Mon, 2008-11-03 at 15:34 -0600, Marc Randolph wrote:
>     > I believe Intel engineers are working on Intel drivers, and
>     there has
>     > been mention of accereleration in the past, but my understanding is
>     > that it isn't there yet.
>
>     nope, not yet.
>
>     >
>     > But even still, I don't think you need a top-of-the-line processor.
>     > Many streams are playable with a ~2.2-2.5 GHz dual core processor,
>
>     I wouldn't mistake downloaded HD movies recompressed @ 8 GB with full
>     dumps from BD.
>
>     Nico
>
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>
> HA, i was going to say the same thing. 
>
> users of the HD-PVR are reporting that 3GHz proc (single core as 
> decoding cant be multi-threaded yet) is need for the max qual. which 
> is around 14Mbps.  Blu Ray is around 30avg. to 40Mbps max.  A much 
> faster proc wil be required.  I dont know if you could even do it 
> without transcoding or hardware accel with todays procs.
>
> Mitchell
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>   
Blu-Ray is absolutely doable with modern processors.  H.264 includes a 
mechanism called 'slicing' where the video is literally split into 
multiple domains which can be encoded and decoded in parallel, with 
nearly no overhead.  The hardware encoder on the HD-PVR is single 
sliced, meaning you have to do 14Mbps on a single core.  Now imagine you 
have three more cores, all capable of equal bitrate, and 30-40Mbps 
really doesn't seem that difficult anymore.  A top end C2D, or probably 
any C2Q, should be fine for decoding Blu-Ray.