[pvrusb2] Any rumors on a new h/w version of HVR-1950 being released?

Roger rogerx at sdf.lonestar.org
Wed May 6 03:22:46 CDT 2009


On Tue, 2009-05-05 at 20:50 -0500, Mike Isely wrote:
> On Tue, 5 May 2009, Roger wrote:
> > I intend to use the HVR-1950 on MythTV to record.  But wondering if
> > playing the live ATSC high definition using mplayer with it's hacks to
> > resize the video before playing it will allow one to view live tv on a
> > slow CPU.
> 
> That I seriously doubt would work.  The mpeg decode step generally has 
> to happen in the processor and that limits your bottom end which is 
> probably going to be at least P4-class 2.4GHz or better before it is 
> going to work for HD video.

Ah. The missing piece of data.  Even though I have a P3 750*2 CPU's,
should probably look at resizing after recording. :-/

And, makes sense now as to why the HVR-1950 doesn't have a chip feature
for resizing video.  (As you said, the HVR-1950 is pretty much a PVRUSB2
unit with an ATSC tuner.)


Another idea, I should grab some high definition test video from the
Internet and play with mplayer here to see what I can do!

720p can play slowly at 88-95% CPU usage with mplayer without XvMC.
(Obviously, 1080 will likely be a no-go unless I resize.)

However, enabling XvMC significantly reduced CPU usage down to 20-30%
while playing 1080!!!  (w/ P3 2x750 & 1G RAM)


Since I only watch local TV, most programs still seem to be broadcast in
standard definition.

So, for my boxes with a usable NVidia card w/ XvMC feature, I should be
alright as this feature is usable with MythTV, except for my laptop.

(The system requirements completely omit the XvMC feature of Nvidia
cards.)

-- 
Roger
http://rogerx.freeshell.org



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