Re: [mythtv-users] Nvidia 8174 driver released

2005-12-07 Thread Stephen Williams
On 12/7/05, David Ellis [EMAIL PROTECTED] wrote:
 Funny - tried it and had TERRIBLE playback (Jittery playback). Not using
 XVMC, just XV on a AMD64 with 5700.interested to see if anyone else
 tried it?

 For now - I've moved back to the 7676 build (which works flawlessly on my
 setup).

 David

 -Original Message-
 From: [EMAIL PROTECTED]
 [mailto:[EMAIL PROTECTED] On Behalf Of Ross Campbell
 Sent: Wednesday, December 07, 2005 9:20 AM
 To: Discussion about mythtv
 Subject: [mythtv-users] Nvidia 8174 driver released

 Haven't tried it yet, but for those so inclined...

 http://www.nvidia.com/object/linux_display_ia32_1.0-8174.html

 -Ross


 Linux Display Driver - IA32
 Version: 1.0-8174
 Operating System: Linux IA32
 Release Date: December 5, 2005

  Release Highlights
 Fixed GeForce 7800 GTX clocking problem that affected 3D performance.
 Added support for NVIDIA SLI. Please see the README for details.
 Added a new utility 'nvidia-xconfig', which is a commandline tool for
 updating X configuration files.
 Added support for new GeForce 6100, GeForce 6150 and GeForce 7800 GTX 512.
 Added manpages for 'nvidia-xconfig', 'nvidia-settings', and
 'nvidia-installer'.
 Made UseEdidFreqs on by default; the NVIDIA X driver will use the
 valid HorizSync and VertRefresh frequency ranges from the EDID
 whenever possible.
 Added support for Stereo Digital Flat Panels such as the SeeReal and
 Sharp3D DFPs.
 Added HTML version of the README.
 Added support for static Rotation; see the Rotate X config option in
 the README.
 Improved stability on 64-bit Linux 2.6 kernels.
 Fixed driver installation when SELinux is enabled.
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Would be nice to know if they've fixed interlaced Xv output, I don't
think this worked since release 6629 (over a year ago).
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Re: [mythtv-users] Multiple channels at the same time, with one DVB card ?

2005-09-20 Thread Stephen Williams
On 9/20/05, Chad [EMAIL PROTECTED] wrote:
 By same multiplex, does that mean 4.1 4.2 4.3... but not 4.1 5.1 6.1...?
 
 Thanks!

By the same multiplex it effectively means transmitted on the same
frequency. I don't believe there's any limitation on whether channel
4.1 or 4.2 (for example) have to be transmitted on the same multiplex
or may be transmitted on different multiplexes. I would suspect that
the specs were written such that this sort of organisational detail is
up to the network that runs the multiplex(es).

Whilst it's a stated wish that Myth should be able to handle multiple
channels simultaneously from a single multiplex, I don't think anybody
is actively working on this feature (they can correct me if i'm
wrong!). Likewise, whether or not the current DVB re-write will make
this goal easier / harder is a question for the current DVB devs.

Steve
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Re: [mythtv-users] frontend crash during UK dvb-t playback - only at adverts

2005-09-20 Thread Stephen Williams
On 9/20/05, Alan Bates [EMAIL PROTECTED] wrote:
 hi all – I now have a stable dvb-t myth setup running on an up-to-date
 fedora core system, using the hauppage nova-t. only major problem thus
 far is:
 
 watching certain UK channels, the frontend crashes when the commercial
 break begins – happens both with recordings and livetv. channels
 identified so far are channel4, e4/e4+1 and  abc1.
 
 I suspect the reason is that these channels broadcast in a variety of
 aspect ratios, and switch over at the start  of the adverts, causing a
 break in the signal of some kind – i.e. main broadcast  is in 16:9,
 channel ident may be in low-res 4:3, followed by ad in 16:9. this
 often causes a broken keyframe (?) which the system struggles to
 recover from, manifesting itself in a green frame, a period of
 scrambled or non-existent audio, and quite often, the complete and
 sudden death of the frontend. rest of the programme and other channels
 are fine.
 
 anyone else seeing  this behaviour or anything similar? let me know if
 there's any debug info that'd  help…

I've been running 0.18 since it was released on DVB-T in the UK with a
(version 909) Nova-T. It's quite normal for the adverts and the actual
programme to be in different aspect ratios, at most I see the odd
green frame / short garbled video but very rarely.

You don't say what version of Myth you're running. The current SVN
head is undergoing a major DVB re-write so i'd use the 0.18-fixes
branch for a production system until that all settles down.

Have a look in the logs to see if there's anything useful, otherwise
try and get a backtrace (see the user guide for instructions).

Steve
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Re: [mythtv-users] MythTV and Apple Cinema Display 23

2005-09-12 Thread Stephen Williams
On 9/12/05, Barry Hee [EMAIL PROTECTED] wrote:
 Just installed an 23 Apple LCD monitor on my Fedora Core 4 system with
 latest kernel and the image is vertically compressed although width is
 correct. The vertical height is similar to watching a DVD with aspect
 1:2.35. My recordings are DVB 16:9 and display okay on a 4:3 monitor. Any
 idea why this happens?
  
  regards
  Barry

Have you set the DISPLAYSIZE attributes in your X configuration such
that X knows that the attached display is 16:9 (or whatever the aspect
ratio this display has)?

Steve
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Re: [mythtv-users] Re: MythTV and Apple Cinema Display 23

2005-09-12 Thread Stephen Williams
On 9/12/05, Barry Hee [EMAIL PROTECTED] wrote:
  I don't need to fiddle the X configuration as Fedora Core 4 supports all
 Apple monitors including the 23 out the box. I just select it from the
 System Settimgs/Display/Hardware with a resolution of 1920 x 1200. The
 desktop is fine but when I am running Myth the image is 'squished'
 vertically not hortizontally.
  
  Barry

FC4 may well provide a valid modeline for the monitor out of the box
what the symptoms you're seeing are because X-server does not know the
aspect ratio of the display. i.e. it doesn't know whether the display
is a 1920x1200 display with a 4:3 aspect ratio or a 16:9 aspect ratio.

Unless X is able to tell Myth / Mplayer / etc what the aspect ratio is
each of these programs will fall back to some default (Myth assumes a
4:3 display, whilst it appears that VLC assumes a 16:9 display).

I don't run FC so I have no idea what the default for this display is,
but it definitely sounds like you've got a modeline but no info on the
physical dimensions of the display. Also, check the archives for info
on how to set DISPLAYSIZE such that the X is working as 100dpi.

Steve
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Re: [mythtv-users] Off Topic - DVB-T, Muxes and reception...

2005-09-08 Thread Stephen Williams
On 9/8/05, Jules Gosnell [EMAIL PROTECTED] wrote:
 If all muxes are being transmitted from the same transmitter, why should
 one bundle of channels feel like it is coming from the moon ? Are muxes
 simply s/w abstractions or do they correspond somehow to physical
 divisions in the h/w - i.e. is my problem mux maybe being pumped out at
 a lower power than all the others etc...

1. Not all muxes are transmitted with the same power. There's a
website somewhere that tells you the power of each mux for each
transmitter (should be linked from the freeview website).

2. The sensitivity of your aerial is not constant across all
frequencies. You can buy aerials that give you excellent reception for
certain frequency bands (you'll need to figure out which one is best
or your transmitter) or you can get a 'wideband' aerial that will give
you average reception over a frequency range that should cover any
transmitter (this is what most standard retailers will sell you).

Chances are that what you are reporting is due to '2' above. The 'bad'
mux is almost certainly on the highest or lowest frequency of the six
muxes for your transmitter, and you'll almost certainly be using a
'wideband' aerial. My suggestion would be to either buy a higher gain
'wideband' aerial or (probably better) buy an aerial that matches your
required frequencies.

Steve
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Re: [mythtv-users] Off Topic - DVB-T, Muxes and reception...

2005-09-08 Thread Stephen Williams
Just a quick follow-up to my earlier post. You can see the gain for
different aerial groups on the follwoing graph
http://www.wrightsaerials.tv/Articles/img/fig%201, Obviously, higher
gain is better.

The power of the different muxes is given on this page:
http://.dtt-tx-info.org/change_tx.htm

As you can see, muxes C and D are transmitted at half power compared
to the rest. And since mux D is at the highest frequency i'd guess
that the one you're having problems with, right? (Mux D shows TMF, The
Hits, Ftn, etc).

Steve
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Re: [mythtv-users] Best deal on premade lirc receivers?

2005-09-02 Thread Stephen Williams
I bought my pre-made receiver from here:

http://www.zapway.de/e_index1.htm

They're small / simple and well made. Delivery was quick (to the UK)
and reasonably priced.

Steve
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Re: [mythtv-users] Methods for perfecting NVidia TV Output (was 350 Tv Out vs. Nvidia 5200)

2005-08-26 Thread Stephen Williams
If your TV has a SCART socket then i'd highly recommend soldering up
your own VGA to SCART convertor. Then you can use an interlaced
modeline to output a legal PAL/NTSC signal from vid card (i'm using an
Nvidia MX440).

The output quality is as good as you'll get short of going to DVI
(which my TV doesn't support). I'm using DVB-T in the UK and the image
quality I get is better than the output from Sony set-top-box.

Steve
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Re: [mythtv-users] Methods for perfecting NVidia TV Output (was 350 Tv Out vs. Nvidia 5200)

2005-08-26 Thread Stephen Williams
On 8/26/05, Mark J. Small [EMAIL PROTECTED] wrote:
 On August 26, 2005 06:18 am, Louie Ilievski wrote:

 This sounds like a really good idea to me.  My big question:
 
 If I have an interlaced signal recorded, why would I want to de-interlace to
 send it my TV?  Wouldn't an interlaced signal be closer to the original??
 
 Mark

You're quite right, you don't want to de-interlace unless you're
displaying on a non-interlaced display. The method I proposed (and
use) sends the original (un-scaled, un-filtered, interlaced) signal
straight back to the TV. That's the primary reason the result looks so
good.

Steve
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Re: [mythtv-users] Methods for perfecting NVidia TV Output (was 350 Tv Out vs. Nvidia 5200)

2005-08-26 Thread Stephen Williams
On 8/26/05, Justin Hornsby [EMAIL PROTECTED] wrote:
 So does this trick work with newer nvidia cards (and drivers of course)
 or is it just older ones?  I've read that some recent nvidia drivers
 didn't output interlaced signals properly (if at all).
 
 And - most of all - will it work with Via Unichrome?
 
 Justin.

It'll work with any video card / driver combination that can output
the required VGA signal, i.e. if it can accept the following modeline:

ModeLine 720x576pali 13.875   720 744 800 888   576 581 585 625 
-hsync -vsync interlace

Steve
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Re: [mythtv-users] Methods for perfecting NVidia TV Output (was 350 Tv Out vs. Nvidia 5200)

2005-08-26 Thread Stephen Williams
On 8/26/05, Craig Tinson [EMAIL PROTECTED] wrote:
 Hi there
 
 I'm in the UK too - with a sony skybox and a mx440 going to an *old*
 Sanyo widescreen CRT TV (which I *wish* I could figure out how to get a
 proper modeline to work with that TV!)
 
 Can you buy convertors like you describe? or do you *have* to solder
 them together?
 
 I'm not much use with a soldering iron so would prefer to buy one if
 possible
 
 If I *have* to solder one - is there anywhere I can look for *easy*
 instructions on what will be needed?
 
 Thanks
 
 Craig

I'm afraid you have to solder it, nobody sells them because there's a
theoretical possibility they can damage your TV, although i've never
heard of that actually happening and it's been working fine for me for
over a year.

I managed to put one together or around £10 of parts. It's easiest if
you can salvage a VGA cable from an old / dead monitor and half a
scart cable. I've never soldered anything before in my life but didn't
have a problem, so it can't be that hard.

I pretty much followed this guide
http://www.sput.nl/hardware/tv-x.html although I had to put power on a
few other pins so the TV recognised that a signal was present and was
widescreen (google for a scart pin-out and you find this information).

If you're anywhere near the Bath area i'd be happy to demonstrate the results.

Steve
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Re: [mythtv-users] Methods for perfecting NVidia TV Output (was 350 Tv Out vs. Nvidia 5200)

2005-08-26 Thread Stephen Williams
On 8/26/05, Mats Cedergren [EMAIL PROTECTED] wrote:
 On 26 aug 2005, at 19.34, Justin Hornsby wrote:
 I have a barebone case with an integrated nVidia Geforce 4 MX.
 Everything worked fine using my own VGA to SCART convertor for a
 while, but nVidia driver version 6629 was the last one to work with
 interlaced output. Every version I have tried since then does not
 work (using PAL 720x576). The problem is that 6629 does not compile
 on newer kernels (like 2.6.1x used in Fedora Core 4).
 
 Mats

I didn't know that. I'm still using a 2.4 kernel and old Nvidia driver
(6067 I think). I'm working on the if it ain't broke then don't fix
it principle.

Thanks for the heads-up, i'll make sure to check that out if I ever
need to upgrade.

Steve
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Re: [mythtv-users] Nuv file screen size

2005-07-26 Thread Stephen Williams
On 7/26/05, Brad [EMAIL PROTECTED] wrote:
 When I view a recorded show I have to change view to zoom 16:9. This
 way it fills the whole TV screen without stretching or distortion.
 When I transfer this .nuv file onto my windows box and burn to DVD the
 picture has a black border around it , making the movie/show too small
 to see properly.
 It is being recorded with a visionplus DVB-T card (PAL
 standard-Australia). The resoloution of the file seems to be
 720xsomething. Should I be changing something so that it is recorded
 in an easier to view format for PAL. Maybe this cannot be changed ?

I first problem (display not defaulting to the correct aspect ratio)
is probably because you need to add some DisplaySize settings to your
Xorg / Xfree86 config file to let Myth know that your display is 16:9
/ 4:3. Search the archives for more details, it's been covered many
times.

Sorry but I can't help with the second problem, i've never tried
writing DVB-T recordings to a DVD (yet). It's probably worth noting
that the DVB-T transmission has a resolution that's perfectly suited
for display on a PAL TV (at least it is here in the UK, I can't
believe it would be different in Aus or set-top-boxes would have to
scale the image before displaying it), so that's unlikely to be the
source of the problem.

Steve
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Re: [mythtv-users] Aopen XCcube as frontend

2005-07-21 Thread Stephen Williams
On 7/20/05, David Maher [EMAIL PROTECTED] wrote:
 Has anyone out there set up an Aopen XCcube as a myth front end? I am in
 the process of doing this with FC4 and would appreciate any tips for the
 remote etc.
 
 Regards
 
 David

I'm also using an nforce2 based xcCube as a combined frontend /
backend. Using a homebuilt VGA - SCART converter for TV-out, 2 DVB-T
cards (one PCI, one USB 2.0) with an XP 2400+ cpu.

For a remote i'm using a small serial based receiver bought from
Zapway (http://www.zapway.de) which works perfectly.

No real problems, I originally installed from a Knoppmyth CD but now
it's pretty much standard Debian.

The only slight annoyance is the inability to disable the PC speaker
at startup... But then i'm being fussy.

Steve
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Re: [mythtv-users] Perplexing one - On screens with lots of black playback judder s

2005-07-06 Thread Stephen Williams
On 7/6/05, Barker Thomas [EMAIL PROTECTED] wrote:
 This is a weird one, I admit it. I have no idea what it could be. Any
 suggestions much welcomed. 
 
 Ok, When I am watching TV be it live or recorded and the scene changes to a
 mostly black scene, the video and audio judder. It is only a blackish scene
 which does this.. Normally during advert breaks; 
 
 My system: 
 Latest svn, (used to do it on 0.18 too) 
 Latest nvidia drivers, complete removal and reinstall just to make sure
 (nforce 2, ie mx4) 
 FC3 
 Sempron 2600 
 Nova-T uk dvb 
 
 Spdif reroute of all sound to an optical decoder 
 AC3 passthrough is not checked nor is sync with audio 

I'm glad it's not just me, yes I see this too. This is also with UK
DVB (TS mode), in fact i've only seen it for one program (Nip Tuck)
but it does for every episode at all 'fades to black' for advert
breaks plus other dark scenes.

One thing I haven't checked that may be of interest is whether mplayer
displays this behaviour or not. Thomas, just out of interest, do you
have 'use video as timebase' checked or not? This setting could be
related and is probably worth testing.

I can probably supply a short mpeg file that demonstrates this
behaviour if required.

Steve
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Re: [mythtv-users] Re: Program time/length not correct

2005-07-01 Thread Stephen Williams
On 7/1/05, Brad [EMAIL PROTECTED] wrote:
 I have just changd to TS recording on my DVB-T VisionPlus card as
 sound was dropping out occasionally. HAs fixed the sound issue but now
 some channels dont report the correct time of the recording. I am
 using knoppmyth R5A12 which i think is .16

It looks like R5A12 used MythTV 0.17. What you're reporting a known
bug that was fixed way back in April. I suggest you upgrade to 0.18.1
if you want this fixed. Plus, 0.18 fixed a lot of DVB related bugs so
it's probably worth your time upgrading.

In future please only reports bugs that you've verified are still
relevant with the latest release (or even better, latest CVS / SVN).

Steve
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Re: [mythtv-users] Program time/length not correct

2005-06-30 Thread Stephen Williams
On 6/30/05, Brad [EMAIL PROTECTED] wrote:
 For some reason on 2 free to air channels the whole program records
 but the skip ahead time only says 2 minutes or so. I have tried
 running the mysql fixes but nothing has changed yet ? Any ideas ?

What build are you running? Is this DVB, if so are you recording in TS
or PS mode?

There was a problem with TS recordings a while ago that resulted in
this behaviour but you'll need to provide more information.

Steve
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Re: [mythtv-users] uc: Singal monitoring - How?

2005-06-28 Thread Stephen Williams
On 6/28/05, Barker Thomas [EMAIL PROTECTED] wrote:
 How can I singal monitor my DVB-T uk signal while trying out different
 aerial configurations? 

Not really a Myth question but You can use tzap to tune to a
channel from the command-line (e.g. tzap BBC ONE) assuming you've
got a channels.conf file sorted out (and if not, create one using
'scan' from the same linux-dvb toolset). Whilst tzap runs it will
provide you with signal to noise ratio information (snr) and an
uncorrected bit error rate (ber) information about once a second. Just
mess about with the aerial until you find how to maximise snr whilst
minimizing ber (hopefully to zero).

Stephen Williams

p.s. I know quite a few people at QinetiQ, which site do you work at?
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[mythtv-users] Configuring the idle DVB channel? Mythtv-setup problem?

2005-06-02 Thread Stephen Williams
When a DVB card is not in use (e.g. for recording or liveTV) and the DVB on
demand option is not used, both of my DVB cards tune to channel 3. What i'd
prefer is for them to tune to channel 1 (since the mux associated with channel
1 has complete guide data, whilst the mux associated with channel 3 does not!).

So the question is, how do I configure this? I've tried changing the 'starting
channel' option in the 'input connections' section of the mythtv-setup (which 
would logically seem to be the option to change) but this does not
have the desired
effect.

Any help / suggestions would be appreciated.

Steve
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Re: [mythtv-users] Configuring the idle DVB channel? Mythtv-setup problem?

2005-06-02 Thread Stephen Williams
On 6/2/05, Mudit Wahal [EMAIL PROTECTED] wrote:
 This helps on a single HD3000 tuner using DVB drivers.
 
 mysql -D mythconverg -e update cardinput set startchan='11_1'

Thanks for the input. As a work-around this is much appreciated!

However, having to directly manipulate the database seems to imply
that there's something lacking from the GUI, unless we're both failing
to spot where to set this.

Steve
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Re: [mythtv-users] Configuring the idle DVB channel? Mythtv-setup problem?

2005-06-02 Thread Stephen Williams
  Run mythtvsetup then choose Input -- Select input connection --
  change Starting channel in the setup page.
 
 The problem with this is that it gets reset each time you change the
 channel to the currently tuned one.
 

As my original positing said, i've already tried this and it doesn't
appear to make a difference to the channel that's tuned when the card
is idle. This setting only seems to affect which channel is tuned on
next entry to livetv.

 This seems to be related to the channel crawling feature that's been
 muted, i.e the DVB code would when mythtv was idle tune to each of the
 channels and attempt to update the EPG.
 
 However it's not bubbled to the top of the list yet.

Indeed it does seem related, although i'm only looking for the basic
functionality of being able to specify a single channel that will be
used when the card is idle. I think the consensus seems to be that
this currently requires a manual database tweak rather than being
configurable through any GUI (would be nuice if you could confirm
this, I was half expecting to need to change a hard-coded value in the
source).

If there is a work-around then i'll happily use that until the
channel crawling functionality becomes a reality.

Steve

p.s. a big thank-you to all the DVB devs, the improvements since I
started using mythtv (0.14) have been highly appreciated!
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Re: [mythtv-users] Re: tv programs that run long

2005-05-31 Thread Stephen Williams
On 5/31/05, Jit V [EMAIL PROTECTED] wrote:
 I know that someone was working on PDC (programme delivery control, or
 something like that).
 
 Anyway... not sure if this is an international standard, but in the UK the
 broadcasts contain extra information which can be picked up by PDC enabled
 video recorders and allows them to determine when a programme has started or
 ended, allowing them to adjust recording times etc automatically.
 
 I'd love to see this on mythtv :)

A while ago whilst flicking through the UK DVB specs (as you do) I
remember seeing a DVB equivalent of PDC. Basically it's a flag which
is set if the programme is currently being aired. Again, I don't know
whether this is UK specific or even whether the broadcasters use this
to indicate programmes that are over running

Has anybody got any information or looked into this? Could a nice
addition to (already much improved!) myth DVB support.

Steve
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Re: [mythtv-users] EPG data from DVB(-T)

2005-05-31 Thread Stephen Williams
On 5/31/05, James Stembridge [EMAIL PROTECTED] wrote:
 On 5/30/05, Dirk Aust [EMAIL PROTECTED] wrote:
  That might be right, but nevertheless, scanning around all DVB-EGP enabled
  channels would also be a good idea, isn't it?
 
 In the UK at least there's no need, afaik the full EPG is broadcast on
 all 6 multiplexes.
 

Whilst EPG data is broadcast on all multiplexes in the UK it's not all
the same. For example, some multiplexes only transmit a couple of days
worth of data rather than the full 8 days. If you're using the OTA
guide data in the UK (as I am) then i'd suggest using the multiplex
containing BBC ONE as your source for data, it's your best bet for
complete information.

Steve
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Re: [mythtv-users] mythepg compile issues

2005-04-18 Thread Stephen Williams
You're trying to compile with XRANDR enabled, but you don'r have it
installed. You'll need to 'make clean' and re-configure with the
'--disable-xrandr' switch before 'qmake maythtv.pro; make'.

Steve
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Re: [mythtv-users] DVB - Recording from 'part time' channels

2005-04-11 Thread Stephen Williams
I reported the problem with failed recordings from part-time channels
two weeks ago. Just to let you know that there's already an open bug
report (no. 261) for this:

http://www.mythtv.org/bugs/show_bug.cgi?id=261

Feel free to add any more detail (e.g. the problem with following
recordings on the same channel). Just trying to avoid duplicates.

Steve
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[mythtv-users] OT: System failed to shutdown

2005-03-24 Thread Stephen Williams
I know this isn't strictly a Myth problem but I don't know where else
to post this. This morning I woke up to find my Myth box had not
powered off correctly, it was supposed to shutdown after finishing a
recording roughly 9 hours earlier.

As far I could tell, everything had happened except cutting power to
the box. The final messages in the syslog at the time I expected
shutdown to take place were:

Mar 23 23:41:40 mythtv kernel: Kernel log daemon terminating.
Mar 23 23:41:40 mythtv exiting on signal 15

At this point it should have restarted to allow the new nvram-wakeup
setting to take effect before halting. Obviously, the system was left
in a state where the wakeup setting had not taken effect so without
manual intervention all further recordings would be missed, not good!

Has anybody ever seen this happen before, or have any ideas why it might happen?

Any thoughts would be appreciated.
Steve
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Re: [mythtv-users] DVB EIT/EPG

2005-03-19 Thread Stephen Williams
Having restarted a few times things seemed to have improved, maybe
there was something a little screwy about that inital run.

One recurring issue i'm still having is that a few channels (e.g.
channel 5, BBC Three, The Hits, Sky News) are only getting guide data
for up to 3 days ahead instead of the expected 7/8 days. I know guide
data should be available further ahead (tv_grab_dvb received it, as
does my set-top-box).

I presume this has something to do with the mux that the guide data is
coming from, i.e. maybe some muxes only transmit abbreviated guide
data, whilst others (e.g. BBC) transmit the full data? If this is the
case, how can I set which mux is being used to get guide data?

Steve
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[mythtv-users] DVB EIT/EPG

2005-03-18 Thread Stephen Williams
I have a system with two DVB-T (uk) receivers which i've just upgraded
to 0.17 from 0.16. I have a few questions regarding program guide data
(EPG). I've tried enabing the in-built guide grabber (by uncommenting
the DVB_USING_EIT setting) but i'm having a few problems.

Firstly, it only appears to be getting guide data when i'm watching /
recording and not when the system is idle, is this correct / expected?

Secondly, I only appear to be getting guide data for the mux/transport
i'm tuned to, even though in the UK (Freeview) the guide data for all
muxes are sent on every mux, is this correct / expected? The result is
that i'd have to sit there watching a channel for each mux in turn to
fully update the guide, not ideal!

Previously i've been using tv_grab_dvb with great success to get my
guide data (the system has no internet connection), is it possible to
still use this tool until the wrinkles with the internal guide grabber
have been sorted? ... or have the database changes made current
versions of tv_grab_dvb unusable?

Thank in advance for any help!

Steve
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Re: [mythtv-users] DVB EIT/EPG

2005-03-18 Thread Stephen Williams
 Check that you haven't got on demand set for your card.

It isn't.
 
  Secondly, I only appear to be getting guide data for the mux/transport
  i'm tuned to, even though in the UK (Freeview) the guide data for all
  muxes are sent on every mux, is this correct / expected?
 
 Not quite true, some mux's are better than others for EIT data. mux one
 seems to have everything most of the time.

That's what I expected. I left it on live-tv on BBC1 for half an hour,
even then I had no guide data for (example) Channel-5. Flicking over
to channel 5 manually resulted in guide data being built up for that
channel.

  The result is
  that i'd have to sit there watching a channel for each mux in turn to
  fully update the guide, not ideal!
 
 Taylor was considering doing this auto magically, but it shouldn't be
 needed in the UK.

Agreed, I didn't think it should be required.

  Previously i've been using tv_grab_dvb with great success to get my
  guide data (the system has no internet connection), is it possible to
  still use this tool until the wrinkles with the internal guide grabber
  have been sorted? ... or have the database changes made current
  versions of tv_grab_dvb unusable?
 
 It should be ok, but you need to switch of the OTA guide setting and
 fill in the xmltvid.

Ok, so it's possible, but a setup hassle.

Thanks for the response, i'll play about some more and see if I can
sort this out.

Steve
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Re: [mythtv-users] Is Mplayer going away? Anyone seen their WWW site recently?

2005-03-16 Thread Stephen Williams
 Sorry, but as a patent attorney I assume she gets a salary? Makes a profit for
 the company she works for? She therefore has a vested interest, and that
 would make her biased, as her livelyhood depends on the need for patent
 attorneys. 

Contrary to popular belief and propaganda, patent attorneys are people
just like you and me, many of them therefore have a conscience and a
degree of professional integrity. It may surprise you to learn that
most of them are interested in encouraging innovation, as indeed is
the European Patent Office (who, if you want to did deeper, you will
discover they often find in favour of 'the little guy' as a matter of
principle and fairness over and above the strict interpretation of the
law). Neither the EPO nor european patent attorneys want a system like
that being run in America, fact.

 Great, so we define the specificity of a law after it is created in the all
 out land grab that ensues.

Patent law is based on case precedent, welcome to reality.

 Your last sentence is nonsensical. One of the EPO's public statements is that
 this is intended to harmonise European patent law.

Clearly you misread it then, as I said, the intention is to stop
certain countries in the EU from using loopholes to get software
patents (which the EPO does not want). Stopping these countries would
be described as harmonisation to me.

 Then why won't they explicitly exclude pure software patents in unequivocal
 terms? The language is convoluted, but the upshot is that as long as software
 has a technical effect it can be patented. Like to explain technical
 effect for me. People are still trying to get clarification on this.

As I said, european patent law is based on precedent. The limits of
'Technical effect' have been determined through case history, this is
why you need to talk somebody who's well informed in that area, i.e. a
patent attorney.

 MythWeb and MythBrowser: BT have a USP on the hyperlink.

Well, no. They tried to play that card but failed.

 MythMusic  MythStream: Franhoefer et al have patents on MP3 encoding
 decoding.

Not in the EU they don't. We don't have software patents remember.
They have copyright on their own software implementation, nothing
more.

 MythPhone: Voice compression codecs.
 MythTV: The ability to pause and buffer TV, then catch up.
 MythNews: I think RSS is based on RDF which is covered by an EP.
 Samba file shares: Good ol' MS have patents on CIFS.
 WishTV: Might be covered if the automated suggestions from other viewers gets
 developed.

Ditto, ditto, ditto. This might be different in America, but their
patent system is fundamentally different.

 Feel free to try and convince me that big business is the one to structure the
 legal framework we all have to live with, but I'm a tough sell.

I'm not trying to do that, and that's not the way it works in the EPO.
Who will determine the rulings are the EPO judges who have a very good
track record for upholding common-sense, fairness and protection of
'the little guy'.

I'm not trying to say this situation is perfect, it's clearly not. Do
try to understand that software patents are starting to be forced
through in the EU right now due to inconsistencies in laws that were
never intended to cover this subject! The EPO (like you) wants to stop
that from happening, like it or not this is the basis for the CIID.
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Re: [mythtv-users] Is Mplayer going away? Anyone seen their WWW site recently?

2005-03-15 Thread Stephen Williams
 No offence, but DUH!!! Of course a patent attorney is going to say that this
 law is all hunky-dory, it's his future bread and butter!!! 

Well, actually no. Her firm does not take work of this kind and as
such is unbiassed in this matter. On the other hand they are fully
informed as to what is going on, and why. And yes, I have looked at
both sides of the argument, read Groklaw, etc, have you?

 The ambiguous wording of the CIID opens the back door for pure
 software patents, and there is a whole saga going on with the European
 Parliament at loggerheads with the European Commission over amendments and
 procedure.

The CIID may well be ambiguously worded, but that's no different to
any other bit of law. The exisitance of a truely unambiguous piece of
law is a myth. It's final meaning will only be defined following a set
of test cases. The European Patent Office has no intention of changing
how software is currently treated, test cases will quickly confirm
this position.

 I suggest you head over to www.groklaw.net for a thorough and
 informative view of what's going on. It may (debatably) be biased the other
 way, but at least you'd have both sides of the argument. Really! Would you
 ask a fox to guard the chicken coop?

You're right, Groklaw is biased the other way. Personally I consider a
patent attorney with no personnel or financial involvement in this
area to be about as unbiassed and well informed as you'll find.

 Wrong! Tell _no_ material impact to all the small and medium business (the
 ones that usually drive innovation) that will be driven out of business by
 this law.
 
 Innovation through litigation?

Don't believe everything you read at Groklaw. The purpose of this
directive is to _stop_ some countries in the EU that have been pushing
software patents through the back doors and loop holes that currently
exist.

Steve
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Re: [mythtv-users] Is Mplayer going away? Anyone seen their WWW site recently?

2005-03-14 Thread Stephen Williams
On Mon, 14 Mar 2005 11:36:29 -0500, john roberts [EMAIL PROTECTED] wrote:
 
 I went to download the latest version of Mplayer and I found:
 
 http://www.mplayerhq.hu/homepage/index.html
 
 They seem to be dealing with legal issues. :(
 
 -John
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No, they're not having legal issues. There just making some misguided
protest about a subject they clearly don't understand. The software
patents directive is a non-issue blown out of all proportion.

My partner is a eurpoean patent attorney so knows what's really going
on here, i've also spoken to people in her firm about this. This
directive does nothing more than to set into law how patenting of
software is _currently_ handled. The laws which have been applied up
till this point were not designed with software in mind, this is what
is being but right.

Quite simply, the directive is deisgned to maintain the current status
quo with regards to patenting of soatware, the whole point behind it
is that the law is clarrified whilst having _no_ material impact.

Steve
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Re: [mythtv-users] How I got great quality TV-out on my nVidia MX4000

2005-03-10 Thread Stephen Williams
 Someone else here wrote, that RGB is *too* sharp for MPEG2 video,
 meaning that you see the artifacts then.
 
 Thomas

I expect it depends on where you got the MPEG2 video from. Using a VGA
- SCART converter in the UK with DVB-T I get an amazing image which
rarely has any visible artifacts. But then the DVB-T MPEG stream was
encoded with the intention of it being displayed on a TV with RGB
inputs, so that's hardly surprising.

If your MPEG stream is being encoded by a PVR-xxx card then it may
well be a completely different story, I doubt the quality of the
encoding is comparable.

Steve
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Re: [mythtv-users] How I got great quality TV-out on my nVidia MX4000

2005-03-09 Thread Stephen Williams
Of course, the way to get 'optimal' TV-out from your Nvidia (or other)
card is not to use it's TV-out facilities at all and build a VGA -
SCART converter for SDTVs (see http://www.sput.nl/hardware/tv-x.html
for example). This is only true of home-built converters, commercial
converters perform scan conversion which lowers the image quality.

Then (with the correct modeline) you _can_ just send the originally
broadcast, interlaced, stream straight to your TV. You are also
keeping the RGB signals seperate, not mixing them all together as you
do with S-video. No deinterlacing or scaling is required so you're not
losing image quality their either, or wasting CPU power.

Oh course, this does rely on you being able to capture the original
interlaced signal (i'm capturing a DVB MPEG stream, no encoder
required). If you're encoding hardware has already thrown that
information away and mixed the odd/even fields then you've already
lost the image quality. Using a VGA - SCART converter in this case
would still give you better colour definition / sharpness, and if
you're encoding at the native resolution then no scaling is required.

I've built one of these and the result is _much_ better than the
TV-out from by Nvidia card. The image quality is even higher than from
my Sony DVB set-top-box.

Steve
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Re: [mythtv-users] How I got great quality TV-out on my nVidia MX4000

2005-03-09 Thread Stephen Williams
 Stephen Williams wrote:
  Of course, the way to get 'optimal' TV-out from your Nvidia (or other)
  card is not to use it's TV-out facilities at all and build a VGA -
  SCART converter for SDTVs (see http://www.sput.nl/hardware/tv-x.html
  for example). This is only true of home-built converters, commercial
  converters perform scan conversion which lowers the image quality.
 
 Anyone knows, if this little hardware can be bought ready-to-use (built)
 anywhere? Maybe even in Germany?

I had a look around at the time I was first comptemplating this route
but wasn't able to find any equivalent system for sale commercially.
The reason being that there is a possibility (well, a theoretical one
anyway) that you can damage your TV through use of out-of-spec
modelines, therefore noboddy sells these commercially.

I find that my TV simply won't lock onto the sync signals if you send
an out-of-spec signal. You just end up looking at colourful garbage if
you're modeline is wrong (or when you're not in X, i.e. booting). I've
yet to hear of any cases where TVs have been damaged in this way.

Steve
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Re: [mythtv-users] Tearing in playback

2005-01-06 Thread Stephen Williams
You don't state what your video card is, but I had a similar problem
using an MX440 with a VGA - SCART adaptor.

The MX440 has two video out ports (I was using one to my TV thought
the VGA - SCART and one to a standard monitor), it tunrs out the
refresh of the two displays were not in sync (even though they could
be, both were are at 50Hz) and the driver arbitrarily chose which
refresh signal to report back to X / Myth / Xine / whatever else might
be interested. It just happened that Myth was syncing to the monitor
refresh and not the TV refresh, thereby tearing the image on the TV.

If you have a similar setup then try disabling all over video outputs
except the TV and see if that fixes things. If not, then try running
Myth with verbose messages enabled and see which sync method it's
actually using. If you don't have an Nvidia card then you probably
want to make sure you're using the OpenGL sync method.

Steve


On Thu, 6 Jan 2005 17:30:19 +1100, William Uther
[EMAIL PROTECTED] wrote:
 Hi,
I'm using a DVB-T capture card - MPEG2 input.  I'm using a VGA-SCART
 adaptor cable to display the video.  (I've finally managed to get Xv to
 work with interlaced output so this is running at reasonable speed
 now.)
 
I'm getting tearing of the image during playback.  Myth should be
 syncing the frame update to occur during the vertical refresh, right?
 Does anyone know how this is supposed to happen, and how I figure out
 why it isn't happening?
 
 Thanks,
 
 Will   :-}
 
 --
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 Phone: +61 2 9385 6357 School of Computer Science and
 Engineering
 Email: [EMAIL PROTECTED] University of New South Wales
 Web: http://www.cse.unsw.edu.au/~willu/Sydney, Australia
 
 
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Re: [mythtv-users] TV Output

2005-01-04 Thread Stephen Williams
The modeline I supplied is for use with homebrew VGA to SCART
converters, these only work by getting the video card to output a
signal which is within the spec expected by your TV.

Commercial converters (such the Key Digital converter) are scan
converters, these scale and interpolate whatever VGA signal you send
them into a normal TV signal. As such it really shouldn't matter what
resolution you send them (well, they'll work but some resolutions will
produce better results I suppose), check to manual to see what the
valid modes are.

Since you're using a scan converter you won't be getting as high a
quality image as is possible from a homebrew converter, this is
because of the scaling and interpolation it's performing.

Steve

 I don't suppose you have a simliar spec for a progressive PAL image do
 you?  (I have the Key Digital VGA to Component adapter)
 
 I generated one based off a Powerstrip mode to get 1024x576 which gives
 an awesome picture, but I'm not sure whether it's entirely in spec as
 the TV's input identifier is flashing in the corner, which apart from
 being really annoying probably means that the signal is not entirely in
 spec.  (The TV's a Panasonic 36PD30 if it makes any difference)
 
 Thanks.
 J
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Re: [mythtv-users] scheduled mythfilldatabase errors. manual mythfilldatabase runs fine

2005-01-04 Thread Stephen Williams
What version of MythTV are you using? 0.16 had a problem where if
mythfilldatabase was reading results from xml passed via a file or
pipe (e.g. if you're using tv_grab_dvb) rather than getting the data
directly it always returned an error code on completion, regardless of
the actual result.

This has been fixed in CVS for a while now, I don't remember the exact
date. If you're getting good guide data but always seeing the same
error code then this is probably what's going on. Either upgrade to
CVS to get the correct result status or just ignore it until 0.17
turns up, it's harmless.

Steve

On Mon, 3 Jan 2005 21:56:11 +1000, David Whyte [EMAIL PROTECTED] wrote:
 I have setup Myth to run mythfilldatabase daily.  It seems to error
 out everyday with the following error shown in the MythWeb Backend
 Status page
 
 Last mythfilldatabase run started on 2005-01-03 21:13 and ended on
 2005-01-03 21:13. FAILED: xmltv returned error code 32512.
 There's guide data until 2005-01-10 06:00 (7 days).
 
 When I run it manually from a terminal it runs fine.
 
 I am on FC2 using the AT packages.  Myth is running as a startup service.
 
 Thanks in advance,
 Whytey
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Re: [mythtv-users] TV Output

2004-12-22 Thread Stephen Williams
Glad to hear you're making progress. The image really should be
centred, the signal is as close to spec as possible. Are you sure that
you haven't set Myth to recentre the image? You might have done that
for you're previous S-video out and haven't reverted it...

Assuming that's not the case you have two options (1) use Myth config
options to offset the display X and Y to centre the picture or (2)
mess with the modeline slightly to alter the front/back porch lengths
for both horizontal and vertical, just make sure you keep the sync
widths the same.

Option 1 would fix Myth put would still mean that other programs, e.g.
Mplayer/Xine/Ogle are off-centre. Option 2 requires a bit of
experimentation put would result in all programs being centred.

Steve

On Wed, 22 Dec 2004 10:00:27 +, Tom Hughes [EMAIL PROTECTED] wrote:
 In message [EMAIL PROTECTED]
 Stephen Williams [EMAIL PROTECTED] wrote:
 
  As you noticed, Nvidia restrict some of the values in their modelines
  to multiples of 8. Taking that into account this is the closest
  possible modeline for 720x576 to the PAL spec:
 
  ModeLine 720x576pali 13.875 720 744 808 888 576 581 586 625 -hsync
  -vsync interlace
 
  If that doesn't give you a stable image then you have a different problem.
 
 Thanks for that - the horizontal values there are the same ones
 that I wound up but the vertical ones are slightly different.
 
 I did get a stable image in the end actually. It was a hardware
 problem after all - it helps if you connect the generated composite
 sync to the right pin on the SCART connector ;-)
 
 The image is a bit high and too far to the right at the moment but
 other than that it looks excellent and fills the screen nicely
 unlike the S-Video output.
 
 Tom
 
 --
 Tom Hughes ([EMAIL PROTECTED])
 http://www.compton.nu/

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Re: [mythtv-users] TV Output

2004-12-22 Thread Stephen Williams
 The strange thing now is that already video playback is OK the
 bottom and right of the menus seems to be chopped off. I have
 both the GUI and the default playback size set for 720x576 at
 the moment.

That's to be expected. You'll need to setup Myth to scale  the GUI
such that it fits on your particular TV, this is take into account how
much you TV overscans the image. The amount of overscan varies from TV
to TV, and depending on how well alligned the gun is on your
particular 'set may not be equal top/bottom left/right. It's always
going to a manual tuning exercise to get it looking just right your
own 'set.

 The other wierd thing is that the OSD text doesn't look right
 at all. It was fine with the S-Video corruption but now looks
 like is being subject to some horrid scaling that is causing
 bits of it to be lost or something.

Odd, not sure about this one. Personally the OSD looks fine on my
system, maybe its to do with the font you're using? Hopefully somebody
else can try and explain this...

Steve
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Re: [mythtv-users] TV Output

2004-12-17 Thread Stephen Williams
I have a very similar setup, DVB-T to a widescreen TV via a Geforce
MX. I agree, the native TV out of the vid card is a little
disappointing. Instead, quite a few people on this list (me included)
are using home-built VGA - SCART converters. Don't bother trying to
buy one of these since they will all of the retail versions use scan
conversion which really lowers the quality.

Take a look at the following sites for details:

http://www.hut.fi/Misc/Electronics/circuits/vga2tv/
http://www.nexusuk.org/projects/vga2scart/index.php
http://www.sput.nl/hardware/tv-x.html  

Personally I went for the last site listed. This will give you RGB
output to the TV, you can just output the raw interlaced DVB-T signal
(no de-interlacing required) and each horizontal line of pixels
generated by your vid card will map natively to a scan line on the TV.

The image quality is fantastic, noticeably crisper than my Sony
set-top-box using RGB output. You might be able to tweak the S-video
output a little but it'll never come close.

Steve


On Fri, 17 Dec 2004 00:21:47 GMT, Tom Hughes [EMAIL PROTECTED] wrote:
 My newly built Myth box is outputting DVB-T recordings to a
 widescreen TV over S-Video from a GeForce 4 MX card but the
 output quality seems to be somewhat lacking.
 
 I using this modeline at the moment, which I found on the mailing
 list:
 
   ModeLine 720x576x50 27.1 720 736 880 896 576 578 579 606
 
 The 720x576 resolution matches most UK DVB transmissions, although
 some are 704x576 instead. I also have these options set:
 
   Option TVOverScan 1.0
   Option TVStandard PAL-I
   Option ConnectedMonitor TV
   Option TVOutFormat SVIDEO
   Option NoLogo true
 
 Note that overscan is turned up to the maximum value. I'm using
 the ATrpms 0.16 build of Myth and the 6629 NVidia drivers.
 
 The first problem is that although the image reaches the right
 side of the screen it doesn't quite meat the left edge, and there
 are large gaps at the top and bottom.
 
 The second problem is that the picture just isn't as crisp and
 clear as the output from my set top box. That is using RGB so
 will be a little better, but my DVD player uses S-Video and does
 better than the Myth box.
 
 Finally there are strange motion artefacts, with are particularly
 noticeable on credits, especially horizontally scrolling ones but
 vertically scrolling ones also show it. Is this perhaps a frame
 sync issue? Do the ATrpms builds have OpenGL sync support turned
 on or not?
 
 Thanks for any help people can offer,
 
 Tom
 
 --
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 http://www.compton.nu/
 
 
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Re: [mythtv-users] TV Output

2004-12-17 Thread Stephen Williams
Sure, damage to the TV is possible, but not very likely! Just make
sure that you wire it all up correctly, it's a very simple circuit.

Until you're into X you'll be outputting a signal well outside of
PAL/NTSC spec (I believe the horizontal rate of your graphics card is
roughly double that of PAL/NTSC). What you'll most likely see is two
squashed images side-by-side on your TV before you get to X, or maybe
just garbage is the TV fails to sync to anything. Again, it's
_possible_ this could damage your TV, but i've never heard of this
happening.

If it's a modern TV it may not display anything and just stay blank
until it receives an in-spec signal, YMMV.

Steve


On Fri, 17 Dec 2004 11:55:21 +, Steve Davies [EMAIL PROTECTED] wrote:
 Tom Hughes wrote:
 
 In message [EMAIL PROTECTED]
 Stephen Williams [EMAIL PROTECTED] wrote:
 
 [snip]
 
 Take a look at the following sites for details:
 
 http://www.hut.fi/Misc/Electronics/circuits/vga2tv/
 http://www.nexusuk.org/projects/vga2scart/index.php
 http://www.sput.nl/hardware/tv-x.html
 
 Personally I went for the last site listed. This will give you RGB
 output to the TV, you can just output the raw interlaced DVB-T signal
 (no de-interlacing required) and each horizontal line of pixels
 generated by your vid card will map natively to a scan line on the TV.
 
 
 
 I was looking at the nexusuk circuit, but the sput.nl one looks
 the same anyway. Time to pay Maplins a visit I think...
 
 
 
 Could someone with more experience tell me something - I am cautious of
 building a VGA - SCART converter, but perhaps I do not need to be. It
 has always concerned me that I might send a signal that is WAY out of
 range down the wire (frequency, voltage etc), and damage some aspect of
 the TV.
 
 Is this possible? The TV is a reasonably recent 32 widescreen.
 
 How does the TV handle the text-mode signal? Does it sync well enough to
 be displayed before X kicks in, or is the boot-sequence hidden?
 
 Is there a site where I can read-up on this type of issue?
 
 Many thanks for any answers.
 Regards,
 Steve
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Re: [mythtv-users] Myth install WITHOUT the internet..

2004-12-15 Thread Stephen Williams
Knopmyth might be worth a look, it'll contain everything you need
including all dependencies on a single CD.
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