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List:       mythtv-users
Subject:    Re: [mythtv-users] Myth setup for hdtv - config help
From:       "Nick F" <nikos.f () gmail ! com>
Date:       2008-05-29 11:29:18
Message-ID: 3ecec3dd0805290429r5bff3746v17d4eef795c8b232 () mail ! gmail ! com
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On 5/29/08, Bill Williamson <bill@bbqninja.com> wrote:
>
>
> On Thu, May 29, 2008 at 6:27 PM, Simon Allcorn <simon.allcorn@gmail.com>
> wrote:
>


>  What I'm after is details on what config changes (frontend and backend) I
>> can make to give me the best chance of playing this HD conetent with no
>> transcoding - I'm lead to believe that my FE box is quick enough (if only
>> just!) to decode this content.
>>
>> *
>> HD source:*
>>
>> UK, BBC HD (1440x1080i 16:9, H.264 with MBAFF)
>>
>>
>> *System:*
>>
>> Frontend: P4 *2.4*Ghz (single core), 1Gb memory , 100Mbit network
>> Backend: P4 Celeron 515Mb memory
>>
>
> my opinion:
> No way is that fast enough.  Try a 3400+ dual core athlon64 or the like to
> do it with deinterlacing and never dropping frames.
>

Seconded.  I'm led to believe a 2.3GHz Core2Duo is the minimum to decode BBC
HD with the current state of code.  My front end is a Core2Duo 2.1 (which is
faster than your P4) and it doesn't quite work (I get pauses).  What I do is
use ffmpeg via a user job to transcode to a lower resolution since my
frontend TV is also only 1366x768.  Doesn't help with live tv though.  I'm
sure as the code gets better the requirements will drop, but I don't think
the P4 2.4 will probably ever cut it.

[Attachment #5 (text/html)]

<div><span class="gmail_quote">On 5/29/08, <b class="gmail_sendername">Bill \
Williamson</b> &lt;<a href="mailto:bill@bbqninja.com">bill@bbqninja.com</a>&gt; \
wrote:</span> <blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px \
0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid"><br> <div class="gmail_quote"><span \
class="q">On Thu, May 29, 2008 at 6:27 PM, Simon Allcorn &lt;<a onclick="return \
top.js.OpenExtLink(window,event,this)" href="mailto:simon.allcorn@gmail.com" \
target="_blank">simon.allcorn@gmail.com</a>&gt; wrote:</span></div> </blockquote>
<div>&nbsp;</div>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; \
BORDER-LEFT: #ccc 1px solid"> <div class="gmail_quote"><span class="q">
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; \
BORDER-LEFT: rgb(204,204,204) 1px solid">What I&#39;m after is details on what config \
changes (frontend and backend) I can make to give me the best chance of playing this \
HD conetent with no transcoding - I&#39;m lead to believe that my FE box is quick \
enough (if only just!) to decode this content.<br> <br><b><br>HD \
source:</b><br><br>UK, BBC HD (1440x1080i 16:9, H.264 with \
MBAFF)<br><br><br><b>System:</b><br><br>Frontend: P4 <b>2.4</b>Ghz (single core), 1Gb \
memory , 100Mbit network<br>Backend: P4 Celeron 515Mb memory<br> </blockquote></span>
<div><br>my opinion:<br>No way is that fast enough.&nbsp; Try a 3400+ dual core \
athlon64 or the like to do it with deinterlacing and never dropping \
frames.</div></div></blockquote> <div>&nbsp;</div>
<div>Seconded.&nbsp; I&#39;m led to believe a 2.3GHz Core2Duo is the minimum to \
decode BBC HD with the current state of code.&nbsp; My front end is a \
Core2Duo&nbsp;2.1 (which is faster than your P4) and it doesn&#39;t quite work (I get \
pauses).&nbsp; What I do is use ffmpeg via a user job to transcode to a lower \
resolution since my frontend TV is also only 1366x768.&nbsp; Doesn&#39;t help with \
live tv though.&nbsp; I&#39;m sure as the code gets better the requirements will \
drop, but I don&#39;t think the P4 2.4 will probably ever cut it.</div> \
<br>&nbsp;</div>



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