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

David myth at dgreaves.com
Wed Apr 6 14:10:07 UTC 2005


David Blackwell wrote:

>On Apr 6, 2005 9:44 AM, Mark Cooke <mpc at jts.homeip.net> wrote:
>  
>
>>*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
>>>Odinsvei 15c                     mailto:morten at webfx.no
>>>1413 Tårnåsen                    Tlf.: (47) 6680 9191
>>>Norway                           Mob : (47) 9343 4357
>>>_______________________________________________
>>>mythtv-users mailing list
>>>mythtv-users at mythtv.org
>>>http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>>>      
>>>
>>--
>>Mark Cooke <mpc at jts.homeip.net>
>>
>>
>>_______________________________________________
>>mythtv-users mailing list
>>mythtv-users at mythtv.org
>>http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>>
>>
>>
>>    
>>
>Bottom post :-)
>so he did.. Sorry I read and replied so fast.
>David
>
>  
>

ah - much more thoughtful - that only took 4 scrolls of the mouse wheel 
to get down to the reply

(yes, this is a troll - as is any post that whines about top/bottom 
posting without itself doing any trimming)



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