[mythtv-users] Video card recommendations for new build

[John P Poet]

On Wed, Jul 26, 2017 at 5:14 PM Stephen Worthington <
stephen_agent at jsw.gen.nz> wrote:

> On Wed, 26 Jul 2017 14:49:47 -0400, you wrote:
>
> >On 7/25/2017 1:14 PM, R. G. Newbury wrote:
> >> On 07/22/2017 11:39 AM, Jim wrote:
>
> >Your setup is similar to mine and sounds a little better than the box I
> >am replacing.
> >
> >It will only be running myth but I want it to have enough grunt to run
> >several comm flagging jobs simultaneously. My current box is limited to
> >one job after the recording finishes and it occasionally struggles when
> >comm flagging and recording 4 or 5 things at once. Trying to watch
> >something under those conditions can sometimes be rather glitchy and
> jerky.
>
> Any modern multi-core CPU will be able to do comm flagging properly
> for you.  I upgraded my MythTV box to an Asus M5A97Evo motherboard
> with an AMD FX-4100 CPU and 8 Gibytes of RAM in 2012.  The CPU is quad
> core 3.6 GHz.  The result is that it can do comm flagging in real time
> on one recording per core.  I have not tried setting it to do more
> than four comm flagging jobs at once, but when doing four at once,
> there is plenty of CPU left over for all the other processing needed
> when I am recording 8 or more channels at once.  By real time, I mean
> that the comm flagging gets done from the RAM buffers at the same time
> as the recording is being written to disk, so there is no need for the
> data to be read back from hard drive to be comm flagged.  That is what
> I needed to make sure that I was not going to be overloading my
> recording drives with accessing too many files at once and causing
> gaps in the recordings.
>

Gavin Hurlbut started working on a GPU based commercial flagger several
years ago.  He has since left the project, but if someone wanted to take it
up, he might provide the code he had developed.

John
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