[vdr] Xineliboutput: can achieve similar to softdevice's mgatv option?

Tony Houghton h at realh.co.uk
Sat Apr 21 01:52:48 CEST 2007


In <1849e5180704201150v36099a6u1f61a89fef75e0d5 at mail.gmail.com>, Alasdair Campbell wrote:

> On 20/04/07, Markus Schuster <ma.schuster at gmx.de> wrote:
>
> >BUT I have to admit that xineliboutput uses only half of the CPU power of
> >softdevice, so it's video decoder has to be more efficient...

Odd, because xine also uses ffmpeg. Perhaps it has a more efficient
decoder for MPEG 2 and uses ffmpeg only for more exotic formats.

> Because I'm using a 550Mhz P3, my only option is to use the
> xineliboutput until I figure out what is causing the big CPU load
> variations. As I've never had softdevice successfully running on this
> television, I can't really say anything about it's quality, though I
> know there's been lots of work in respect to the matrox cards.

Another alternative is to use the other vdr xine plugin with df_xine,
which gives very good results with my Matrox (G450). About the only
problem is that it sometimes doesn't scale the OSD correctly, chopping
off the right hand side. Something to do with 16:9 vs 4:3 I'm sure. And
I don't know whether it can handle letterboxing an interlaced 16:9
picture for a 4:3 TV. I heard that softdevice gets, or used to get that
wrong, as if it treated the two fields as one frame and scaled them
together, rather than scaling each field separately. Maybe the hardware
doesn't support the latter, in which case it would have to use slow
software scaling.

My experience with softdevice was that the A/V sync was a bit off for
live TV and way off for recordings. df_xine is spot on.

If you want to be able to stop/start df_xine and/or watch other videos
all with one remote control you can use boxstar as a front-end.

-- 
TH * http://www.realh.co.uk



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