[mythtv-users] HD deinterlacing

[Seth Daniel]

On Mon, Oct 01, 2007 at 04:09:00PM -0400, Tom Dexter wrote:
> On 10/1/07, Seth Daniel <mythtv.org at sethdaniel.org> wrote:
> >
> > http://www.gossamer-threads.com/lists/mythtv/users/265138?#265138
> >
> > Apparently some stations (notably CBS and NBC here in the States)
> > broadcast commercials at a different encoding.  This fools Mythtv into
> > displaying the wrong run time.  I think this also affects the speedups
> > you are seeing (and I am also seeing...typically directly after a
> > commercial break (at least in my case)).
> >
> 
> I actually hadn't noticed, but the shows where I had the issue with
> speedups etc are in fact showing the wrong length by about 7 minutes.
> 
> The other day I was seeing if I could debug this one:
> 
> http://svn.mythtv.org/trac/ticket/799
> 
> ...Chris responded to my comments on the dev list with this:
> 
> http://www.gossamer-threads.com/lists/mythtv/dev/293127
> 
> ...apparently some stations have the commercials with different frame
> rates (which really surprized me) and myth as yet has no way to
> properly calculate lengths under those conditions.  Is this what
> you're referring to by a different encoding? 

Yes, that was what I was referring to.  I was simply paraphrasing what
was discussed in the link I provided.  In that discussion it was (again,
paraphrasing) that the 'commercials were using a different encoding'.  

Brian Wood just hypothesized that it was due to a different treatment of
filmed material, but it does seem that it is the commercials that are
causing the problems. 

-- 
seth / @sethdaniel.org
Hofstadter's Law:
It always takes longer than you expect, even when you take
Hofstadter's Law into account.