[mythtv-users] mythtvideo 0.21 - internal player scaling

[Joan Vallés]

On Tue, Mar 25, 2008 at 9:53 PM, Steven Adeff <adeffs.mythtv at gmail.com>
wrote:

> On Tue, Mar 25, 2008 at 8:26 AM, Joan Vallés <joan.valles at gmail.com>
> wrote:
> > On Wed, Mar 19, 2008 at 6:58 PM, Steven Adeff <adeffs.mythtv at gmail.com>
> > wrote:
> > > On Mon, Mar 17, 2008 at 10:39 AM, Joan Vallés <joan.valles at gmail.com>
> > wrote:
> > > > Hi,
> > > >
> > > > I've been using internal player for some time and I was happy with
> it as
> > it
> > > > plays many of the formats I use, since I upgraded to .21 I started
> > noticing
> > > > that videos do not look as smooth as before, I don't know how to
> explain
> > it
> > > > in my poor English, but image quality is definitely worse. I looks
> like
> > the
> > > > horizontal lines are doubled, scaled without interpolation
> ("coarse"?),
> > > > does it make any sense? anyone experiencing something similar?
> > > >
> > > > BTW I tried the same videos using mplayer (SMplayer) and they look
> great
> > (as
> > > > they did when using .20)
> > > >
> > > > Thanks
> > >
> > > Possibly due to the use of a different deinterlacer than you had
> > > previously set which is due to the new CPU Profiles. Make sure your
> > > using the proper Profile for your system and that the deinterlacer is
> > > properly set.
> > >
> > >
> >
> > Thanks for your reply Steve but videos I play using mythvideo are not
> > interlaced, anyway, I'm going to check again my Playback profiles
> starting
> > with the Slim one.
>
> Joan, it's possible, if the video your watching is much lower
> resolution than your TV that the scaling Myth uses (which is very
> basic) may be showing its inferiority to the mplayer scaler. Thats one
> area where some work was done a while back (to introduce the use of
> better scaling algorithms but nothing seems to have come of it. I
> think the idea was to get it working in hardware via the openGL stuff,
> but I don't think it was implemented yet.
>
> Daniel, any word on the scaling stuff that was discussed oh-so-many months
> ago?
>

Steve, you are right, videos are about the half of the resolution of the TV.
I just noticed the  big quality difference when I switched to 0.21, before
that (0.20) I was very happy with the output.

Regarding openGL, should it provide more quality? I've tried to use it but
it works just once, then when go back to the recording list and play the
video again I just get a black screen... I need to do some more testing.


-- 
Joan
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mythtv.org/pipermail/mythtv-users/attachments/20080326/cca4c537/attachment.htm