[mythtv-users] A success story and a few questions.
tufkal at gmail.com
Tue Aug 2 05:54:58 UTC 2005
Well if you setup the recording profile to use RTJpeg and not mpeg4,
most of the processing is done on the backend side and the frontend gets
a little break. If you switch to MPEG4 the backend uses less CPU but
the frontend uses more. It's kind of a balancing act. The frontend
uses on average 40% CPU with RTJpeg quality 170 (the default) for live
TV. A Celeron 300 should be able to handle it without maxing out the
CPU usage, and even if it did you could bump the rtjpeg quality down a bit.
Nathan Widmyer wrote:
> How successful is that P3 500? Do you have processing power to spare
> or is the processing power almost too little? I have an older P3
> Celeron 300Mhz that is collecting dust and I have a bt878 card as well
> from another box not doing anything. I want to put a serious box
> together soon but maybe I can tinker with this old PC and this TV card
> and I'm wondering how plausible it would be. Thanks in advance, Nate.
> On 8/2/05, *tufkal* <tufkal at gmail.com <mailto:tufkal at gmail.com>> wrote:
> have played around with MythTV since 0.15 with mxied success trying
> new things and learning how it all worked. I recently decided a
> myth box
> in my living room would be a good addition, and I had a Pentium III
> 500mhz / 192MB RAM / 10GB HD sitting around to abuse. I am a user of
> Mandriva (Mandrake) linux, so I installed the backend on my server and
> added a BT878 card. Using Mandriva 2005 LE and thac's latest RPMs for
> Myth, it was up and running in 2 minutes flat. Setup the frontend
> Mandriva 2005 as well, and everything just worked.
> Now by everything I mean live tv, recordings, transcodes, video and
> audio quality, and the basics. I will be fumbling throguh getting
> MythGame, MythMusic, MythVideo, and a few other plugins setup in the
> next week, but that is not what I am worried about.
> There are a few things I want to accomplish that I am not sure the
> way to go about. First of all I have a large wireless network with my
> neighbors and friends, that I would like to offer streaming TV to.
> Now I
> dont have the hardware to run 5 tuner cards and give everyone frontend
> software. And since there isnt any Windows frontend I know of besides
> tapping in with DSmyth, I am looking for other options. I noticed
> someone with the DSMyth filters can open the ringbuf1.nuv file and see
> the buffer, but once I change the channel or the file reaches its size
> limit and starts overwriting itself, dsmyth cant handle it. What
> is the
> best way to get a stream I can share on my network?
> The other thing I am looking to do is add a second tuner card so I can
> record a show while wathcing another live. I've adjusted the various
> profile settings so that about 40% cpu usage is used per input,
> but the
> problem I have run into is when I add the second card, lspci shows it,
> and the necessary /proc entries show the kernel sees the card, but i
> only have 1 /dev/video device present. Do i have to mknod it myself?
> Thanks in advance for the help.
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