[mythtv-users] CPU for spftware MPEG-4 encoding

Mark Cooke mpc at jts.homeip.net
Wed Apr 6 13:44:49 UTC 2005


*grrr for top posting*

The PVR250/350 is MPEG2, not MPEG4 as the poster asked.

I transcode from an MPEG2 PVR250 stream at 4mbit/sec, 720x576 to MPEG4
1000kbit/sec 360x288 on my system, and it seems to do about 20 frames
per second.

This is a P4-2GHz.

Playback of the resulting file uses around 20-30%

So it is my experience that transcoding is not realtime on my PC, but
playback is.  Recording from raw frames to MPEG4 might be easier on the
PC than transcoding.

HTH

Mark

On Wed, 2005-04-06 at 15:34 +0200, Morten Rønseth wrote:
> But a PVR-350 both encodes & decodes in hardware...
> 
> 
> Cheers,
> 
> 
> -Morten
> 
> David Blackwell wrote: 
> > Using a pvr-350 I am running livetv with recording on a p2 400 with
> > 256 megs of ram
> > 
> > David
> > 
> > On Apr 6, 2005 9:24 AM, Chris Picton <chrisp at tangent.co.za> wrote:
> > > Quick question
> > > 
> > > What are the minimum CPU requirements for live tv MPEG4 encoding.
> > > 
> > > Or rather, who has the slowest system, running mpeg-4 encoding and
> > > decoding in software.
> > > 
> > > --
> > > Chris Picton <chrisp at tangent.co.za>
> > > 
> > > 
> > > _______________________________________________
> > > mythtv-users mailing list
> > > mythtv-users at mythtv.org
> > > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> > > 
> > > 
> > > 
> > 
> > 
> 
> -- 
> -------------------------------------------------------------------
> WEB-fx
> Morten Lerskau Rønseth           http://www.webfx.no
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-- 
Mark Cooke <mpc at jts.homeip.net>



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