[mythtv-users] Video breaking up after installing new video card

[Daryl McDonald]

On Fri, May 2, 2014 at 7:49 PM, Phill Edwards <philledwards at gmail.com> wrote:
>>> > 2) My video goes very blocky and smashes the picture up. When this
>>> > happens the audio also disappears. It happens quite a lot (many times per
>>> > recording).
>>> >
>>> > What is the best way of fixing this? Do you just have to try lots of
>>> > different playback profile and interlace settings until you find one that
>>> > works? Or is there a more scientific way?
>>> >
>>>
>>> > #2 sounds like a signal strength issue, I needed better coax connectors
>>> > to resolve this in my system.
>>> >
>>
>> Thanks, I think you're right. I copied the file to a PC and played it on
>> there and got similar results.
>>
>> I'm using a HD Homerun with DVB-T broadcasts. Recently I also installed a
>> DVB-T PCI card to get more simultaneous recordings. Is the problem more
>> likely to be signal strength or I/O bottleneck? I guess signal strength can
>> be fixed with some sort of boost device, but an I/O bottleneck would mean
>> buying faster disks.
>
>
> BTW, I should point out a couple of other things here:
> 1) My setup is a virtualised Mythbuntu backend on vmWare and the disk it
> uses is NFS.
> 2) The TVs in the house don't seem to have signal issues (which is why I now
> think this may be I/O rather than signal strength, but happy to be told
> otherwise).
>
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If the signal is split by a size appropriate splitter and fed to each
device then your TV sets are being truthful, if however you are using
daisy chain splitters, a two way going to a TV and another two way and
to two tuner cards, or some such setup then your TV will lie to you.
>