[mythtv-users] MHEG issues (UK) - flickering, video resizing, mind the gaps!

[Another Sillyname]

David

I realise this is outside the scope of what you'll be looking at but
is there any chance you could add functionality to save pages
(selected) as text files? (or dump all the data to flat text files and
I'll extract the data)?

I had a hunt around in the libmheg code (which is where I suspect the
text is getting generated and rendered from?) and realised very
quickly it was outside the scope of my abilities, while I'm willing to
write the code myself I suspect that setting fire to that many boxes
belonging to other people at the same time could reduce my life
expectancy ;)

What I can do and am trying to do is to write some script frameworks
that extract specific information from the assorted teletext sources
and provides a mythosd popup either on demand from a Remote Control,
on a timed cycle or on a trigger event.

The information could be as simple as a news/weather/share price
scroller or whatever the person wants (say Special Deals on Holidays
to Florida.....whatever).

It wouldn't be something everyone would want but could be handy for some people.

Regards

J

On 14/04/2008, David Matthews <dm at prolingua.co.uk> wrote:
> Sam Jacobs wrote:
>  > On Sun, Apr 6, 2008 at 12:14 PM, John Veness
>  > <John.Veness.myth at pelago.org.uk> wrote:
>  >>  Yes, I've seen these things too, although 0.21 was an improvement on
>  >>  0.20.2. There are some rendering errors on the GameCentral letters page
>  >>  too (page 809 on ITV1). To help the devs I'd like to be able to provide
>  >>  screenshots - what's a good way to make a screenshot of an MHEG screen?
>  >
>  > I would just take them in the normal way for whatever platform you're
>  > on. I took a few from BBCi, Teletext on 4 and The Hits, and put them
>  > online: http://picasaweb.google.com/fluffybunnypoos
>
>  Thank you both for pointing these out.  I don't always read the user
>  list so it's usually best to create a ticket when there's a definite bug.
>
>  There has been little change in the MHEG code for quite a while but
>  there have been changes in various other areas which could be affecting
>  the MHEG display.  I need to find some time to look at these more
>  closely.  I do have a few changes in the pipeline related to MHEG on
>  Freesat.
>
>  I've had a look at your screenshots.  The text layout problem on page
>  809 was a bug and I'll include a fix in my next update.
>
>  I suspect the problem with the "gaps" is due to rounding issues in the
>  OSD code.  The MHEG code generates multiple OSD images but if these
>  don't exactly fit then there will be gaps.
>
>  > For some reason the text doesn't look very good in the screenshots, it
>  > looks better on-screen - smoothing appears to have been applied at
>  > some level. Note that I modified MythFrontend to use
>  > TiresiasScreenfont for rendering MHEG text (I also have the rest of
>  > the interface using it, and it looks fantastic).
>
>  The UK MHEG profile specifies the Tiresias screen font but as far as I
>  am aware this is still not freely available.  That's why the current
>  Myth code uses FreeSans.  I guess it could check to see if Tiresias is
>  installed and fall back to FreeSans otherwise.
>
>  > I want to take some more screenshots, specifically of Sky Text, NHS
>  > Direct on Sky Text and NHS Direct on Teletext. I'm unable to take
>  > screenshots of the radio channels because they're crashing the
>  > frontend (as are off-air channels, which is *really* annoying).
>
>  There were some initial problems with MHEG on off-air channels when the
>  multirec branch was first merged, actually not with the multirec code
>  itself but the removal of the old "dummy" video stream.  There weren't
>  any crashes, it just didn't display anything until it was fixed.  I'm
>  not aware of anything in the off-air or radio channels that could cause
>  a crash and they certainly work for me with the 0.21 fixes branch.  If
>  you're getting crashes you probably need to get a gdb traceback and
>  investigate further.  What version of Myth are you running?
>
>  David.
>  _______________________________________________
>  mythtv-users mailing list
>  mythtv-users at mythtv.org
>  http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>