[mythtv-users] New Upnp Channel Changer Script (Dish VIP 211 users definitely read)

[Dan Wilga]

On 2/25/15 11:26 AM, Karl Newman wrote:
> On Wed, Feb 25, 2015 at 6:54 AM, Dan Wilga 
> <mythtv-users2 at dwilga-linux1.amherst.edu 
> <mailto:mythtv-users2 at dwilga-linux1.amherst.edu>> wrote:
>
>     Ideally, there would be some way for the channel change script to
>     tell Myth, "I can't tune that" and have the recording marked as
>     "failed". Looking at the Myth source code, I don't think it does
>     anything with the script return value, so I guess there's nothing
>     to be done in this regard.
>
> It must do something with the channel change script return value, 
> because I just had some recordings fail because my channel change 
> script returned an error. They showed up in Myth as grayed out with 0 
> bytes, so it was obvious they had failed. It tripped me up, actually, 
> because the channel change script failure was only logged as an info 
> status under the channel logging group, so I didn't see the error in 
> the log. I submitted a patch to change a failure to be logged as an 
> error under general (so it will be seen with the default logging 
> options) and it's been incorporated into master.
>
> So, in your case, if the channel change script can detect the failure 
> and propagate that as a nonzero script exit code, it should be picked 
> up by Myth.
You're right, Karl. And, not only that, there's a way to leverage this 
in Jon's script.

I'm sending him a modified version privately that he can consider for 
inclusion. When using it, a failure to tune is easily detected by the 
script, and a non-zero status is returned. When this happens, Myth 
creates a zero-byte recording and holds the tuner "active" for a while 
(seems to be about 30 minutes.)

But the zero-byte recording isn't considered complete, so the recording 
gets rescheduled. This will happen over and over until the channel is 
finally available which, counter-intuitive though it may seem, is pretty 
much what I want. The only minor wish is that Myth would not even create 
the zero-byte Recordings entry, but I can live with it the way it is.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mythtv.org/pipermail/mythtv-users/attachments/20150302/4f028909/attachment.html>