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

Brian Wood beww at beww.org
Wed Oct 1 22:37:12 UTC 2008


Tom Dexter 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.
> 
> The other thing I've noticed is that the preview images in mythweb for
> all the same shows are solid black.  The offset used for previews is
> set to 64 which must be the default as I've never set it.  The shows
> definitely have non-black content 64 seconds in, so I think this is
> being caused by the same thing.
> 
> I'm guessing this must be something screwy that they're doing.  Anyone
> else notice this?  Thanks.

Haven't noticed, probably because I live in Wyoming.

But, I have forwarded your post to the engineering folks at WNBC, as I
know them from when I worked for WWOR and CNN in NYC.

If I hear back I'll post the reply.

beww


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