[vdr] Re: Feature request - 16/9 auto-swithing

[Mario Dilleni <mad@whiskytrinker.de>]

At 16:38 03.01.2004, you wrote:


that's right, my TV switches to a mode called WideScreen (16:9 anamorphic, 
like it does, when playing an anamorphic DVD  from the DVD player diretly 
connected to the TV-set. Ihave disabled any automatic switching of the 
picture format exactly for the reasons you gave...
Sometimes I manually switch to another mode called 16:9 or 14:9 to get rid 
of the black bars, of course with artificially zooming the picture.

> Be carefull !!!
>
> AFAIK, there is *no* possibility to detect "normal" or "large" signal from a
> simple composite connection (ie cinch).
>
> It means that your tv detects a letter box programs from the black zones
> above and underneath the image, and then activate an artificial zoom mode.
> Please note that it's    completely different than the true 16/9 mode,
> because zooming decreases the quality of video : you stretch horizontally
> and vertically a small image to fill entire screen, without any more
> information ! (Remember that the two  blacks zones doesn't contain any
> information and are totally lost).
> => At the end, you are displaying a full screen with no more than about 300
> lines...
>
> Keep in mind that true 16/9 gives an *anamorphic* image which is only
> horizontally stretched (by the true anamorphic 16/9 mode of the tv). In this
> way, the maximum resolution is keeping, ie from about 500 lines. Really more
> efficient than a poor zoom !
>
> PS : At this time, there is a true 16/9 anamorphic film on ZDF (Astra).
>
> Bye !
> Karim.
> ___________________________
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>
> -----Message d'origine-----
> De : vdr-bounce@linuxtv.org [mailto:vdr-bounce@linuxtv.org]De la part de
> Mario Dilleni
> Envoye : samedi 3 janvier 2004 15:57
> A : vdr@linuxtv.org
> Objet : [vdr] Re: Feature request - 16/9 auto-swithing
>
>
> At 14:38 03.01.2004, you wrote:
>
> I'm not Klaus;-),
> but can tell you that autoswitching works for me. Unfortunately I'm not
> sure why, as I've connected my VDR-Box via am AV-Receiver which only has
> Cinch connectors. But it definetly works ( sometimes it takes a bit to
> switch back from 16:9 to 4:3).
>
> I guess it's afeature of my Philips TV-set
>
> >Hi Klaus,
> >
> >My vdr box is connected to a 16/9 TV. Unfortunately, here in France, we
> have
> >*only* two trues 16/9 channels. It means that every time I zap from a
> >"normal" to a "wide" channel, I've as well switch manually the tv from
> "4/3"
> >to "16/9".
> >
> >I would like to automate this feature. AFAIK, the only way to drive tv mode
> >switching, is to connect it through a SCART connector instead of "cinch" or
> >"mini-din". In this way, in case of 16/9 program, the source transmit a
> >special signal (*) to switch between "normal" and 'wide' modes.
> >
> >(*) by changing the "commutation lente" pin level from 6V to 12v.
> >
> >I plan to build a home made SCART connector to add the feature. The
> >commutation signal could be fetched from a serial or parallel port,
> buffered
> >and voltage ajusted, before  driving the SCART through "commutation lente"
> >pin.
> >
> >In VDR version 1.3x, could it be possible that VDR "trig" a serial (or
> >parallel) port pin  in case of 16/9 programs ?
> >
> >If there is another possibility, fell free to tell us ;-)
> >
> >
> >Regards.
> >Karim.
> >
> >
> >
> >
> >
> >
> >
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>
>
>
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