[mythtv-users] Two odd issues with NBC DTV recordings

David Brieck Jr. dbrieck at gmail.com
Thu Oct 2 13:59:40 UTC 2008

On Wed, Oct 1, 2008 at 10:23 PM, Brad DerManouelian
<myth at dermanouelian.com> wrote:
> On Oct 1, 2008, at 7:14 PM, Kevin Kuphal wrote:
> On Wed, Oct 1, 2008 at 5:32 PM, Tom Dexter <digitalaudiorock at gmail.com>
> wrote:
>> I record OTA DTV broadcast out of New York City.  Over the past couple
>> of weeks I've noticed two issues that only occur with recordings from
>> NBC (channel 4.1)...nothing serious but odd.  I already know that NBC
>> is notorious for strange things like switching frame rates for
>> commercials and missing progressive and interlaced frames etc...maybe
>> this stuff is related.  The issues are only on recordings from the
>> past few weeks and don't occur with what older NBC recordings I have.
>> I've done no updates to anything in that time.
>> First of all, very often when I jump ahead or back in the recording I
>> get temporary pixelation, almost as though it's not finding a key
>> frame or something.
> I've noticed the same thing on our NBC HD recordings here near Chicago via
> QAM cable.
> I've always gotten that on my NBC recordings and chalked it up to "that's
> how 1080i content is" since I don't have any other 1080i station to compare
> it to.
> _______________________________________________

I wouldn't say I've always noticed it, but recently I've noticed the
same thing happening skipping forwards and backwards. I mainly record
NBC on 10.1 out of Philly, but I've also seen it on 8.1 out of
Lancaster PA as well.

Don't ask me why, but I'm about 15 miles from the Lancaster
transmitter and 50 miles from Philly and I get much better recordings
out of Philly.

I don't see the same things on CBS or Fox.

I've also played around with my deinterlacers to no avail.

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