[mythtv-users] WinTV PVR 150: Trying to Get Tuner and Composite to Access Two Different Video Sources

Mache Creeger mache at creeger.com
Thu Nov 29 17:48:23 UTC 2007

While I never assumed that I could have the WinTV PVR 150 encode two 
video streams simultaneously, I did assume that I could have it 
switch from one input to the other depending on the channels 
supported in the respective video source and the requests being made 
by the recording software or live TV viewing.

Since my first video source supports analog channels 2-82 and is 
attached to the tuner and the other video source supports the digital 
channels above 100,  I thought myth could distinguish between the two 
video sources and schedule their use to occur non-simultaneously.

What I hear you saying is that myth will only support one video 
source per encoder even though mythtv-setup allows you to configure 
multiple video sources on the card.

if this is true, I am puzzled by the following statements in the 
mythtv docs (http://www.mythtv.org/docs/mythtv-HOWTO-9.html#ss9.1) see bolded.

Input Connections

The final configuration item is Input Connections. On this screen, 
you will associate the various video sources you defined earlier with 
a physical input to a encoder card. It's entirely possible that you 
have multiple tuners, and each tuner has a different input, so on 
this screen you let MythTV know which device will connect to which 
input source.

When you start this screen, you should see a listing of the various 
input connections available on each of the Capture cards you defined 
earlier. For example, you may have a capture card with a tuner, a 
SVideo and a Composite connection. If you wanted to associate the 
tuner (a.k.a., "Television") with an "Antenna" source you defined in 
Video Sources, you would move to the /dev/videodevice (Television) -> 
line and press the space bar. Using the left and right arrow keys 
will show you the various choices you have already created for video 
source. In our case, you would use the left/right cursor keys until 
"Antenna" was shown in the Video Source field. Press down to move to 
the next setting.

NOTE: Don't add a video source to a hardware input if you don't 
actually have anything connected there. For example, adding "Cable" 
to the Tuner and to the Composite inputs without having something 
connected to Composite will lead to blank recordings.

The two bolded sections seem to suggest that you can have multiple 
inputs to a single encoder card as long as they each represent a 
distinct physical video feed.

I am confused...

-- Mache

At 09:18 AM 11/29/2007, Dan Ritter wrote:
>On Thu, Nov 29, 2007 at 09:09:33AM -0800, Mache Creeger wrote:
> > I have the standard Myth (mythtv-0.20.2-169.fc7) releaase installed
> > on Fedora 7 running on both a Master Backend (MBE) and a Slave
> > Backend (SBE). The MBE has a WinTV PVR 500 and the SBE has a WinTV
> > PVR 150. I am currently stuck.  My goal is to have four video
> > streams. I can only get three. The four streams would include:
>You only have three tuners. 2 on the 500, one on the 150.
>Yes, they have multiple connectors. Yes, technically the composite video
>input isn't a tuner connection. It's an encoder.  No, that card can't
>encode from both the coax and composite connectors at once.
>And Myth currently doesn't have a good concept that two program
>sources are available from one tuner device, but that only one
>of them can be active at a time.
> > However, when I use mythtv-setup to configure the WinTV PVR 150 on
> > the SBE to use both the tuner and the Composite Video (Composite1 or
> > Composite 2) connector - using separate video sources - things fall
> > apart.
> > the Video Sources many times and rebuilt them. Either myth is not
> > designed to support two video sources on a WinTV PVR 150, something
> > is screwy in the mysql database, or I am missing something obvious
> > over and over again.
>The first of these cases is correct.
>Now, your cable box is presumably a superset of the clear analog
>cable channels, so just configure that. That gives you the
>maximum availability with the hardware you have.
>You can replace your 150 with another 500, and put one of the
>tuners there on the cable box and the other on the raw cable
>feed. That will work, too.
>Every time you give up a right, the terrorists win.
>Tyranny is something that creeps up on you.
>http://tao.merseine.nu:81/~dsr/eula.html is hereby incorporated by reference.
>mythtv-users mailing list
>mythtv-users at mythtv.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mythtv.org/pipermail/mythtv-users/attachments/20071129/c7bc7673/attachment.htm 

More information about the mythtv-users mailing list