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List: mythtv-users
Subject: Re: [mythtv-users] Myth setup for hdtv - config help
From: "Simon Allcorn" <simon.allcorn () gmail ! com>
Date: 2008-05-29 12:32:08
Message-ID: 857df8820805290532t34e64452n26da18c555f7f952 () mail ! gmail ! com
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Hi,
thanks for the replys.
>>What I do is use ffmpeg via a user job to transcode to a lower resolution
since my frontend TV is also only 1366x768.
Nick - can you give me the details of the your ffmpeg job ? I've got the
same output resolution (26' Samsung LCD TV)
Given it seems my FE is too slow for live HD decoding I'll have to go the
transcode route
thanks
Simon
On Thu, May 29, 2008 at 12:29 PM, Nick F <nikos.f@gmail.com> wrote:
> 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.
>
>
>
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> mythtv-users mailing list
> mythtv-users@mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>
>
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Hi,<br><br>thanks for the replys.<br><br><br>>>What I do is use ffmpeg via a \
user job to transcode to a lower resolution since my frontend TV is also only \
1366x768.<br><br>Nick - can you give me the details of the your ffmpeg job ? I've \
got the same output resolution (26' Samsung LCD TV)<br> <br>Given it seems my FE \
is too slow for live HD decoding I'll have to go the transcode \
route<br><br>thanks<br><br>Simon<br><br><br><br><div class="gmail_quote">On Thu, May \
29, 2008 at 12:29 PM, Nick F <<a \
href="mailto:nikos.f@gmail.com">nikos.f@gmail.com</a>> wrote:<br> <blockquote \
class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt \
0pt 0.8ex; padding-left: 1ex;"><div><div class="Ih2E3d"><span class="gmail_quote">On \
5/29/08, <b class="gmail_sendername">Bill Williamson</b> <<a \
href="mailto:bill@bbqninja.com" target="_blank">bill@bbqninja.com</a>> \
wrote:</span> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, \
204, 204); margin: 0px 0px 0px 0.8ex; padding-left: 1ex;"><br> <div \
class="gmail_quote"><span>On Thu, May 29, 2008 at 6:27 PM, Simon Allcorn <<a \
href="mailto:simon.allcorn@gmail.com" target="_blank">simon.allcorn@gmail.com</a>> \
wrote:</span></div> </blockquote>
<div> </div>
</div><div class="Ih2E3d"><blockquote class="gmail_quote" style="border-left: 1px \
solid rgb(204, 204, 204); margin: 0px 0px 0px 0.8ex; padding-left: 1ex;"> <div \
class="gmail_quote"><span> <blockquote class="gmail_quote" style="border-left: 1px \
solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">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.<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. Try a 3400+ dual core \
athlon64 or the like to do it with deinterlacing and never dropping \
frames.</div></div></blockquote> <div> </div>
</div><div>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.</div>
<br> </div>
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target="_blank">http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users</a><br> \
<br></blockquote></div><br>
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