Hi,
First of all many thanks for this absolutely great piece of software.
I'm running tvheadend (version 3.9.2301~ge2bd233) on a CuBox-i4pro under debian jessie (headless, kernel 3.14.14).
The tuner is a PCTV DVB-S2 Stick (461e) (em28178 driver card #92, USB id 2013:0258).
On the frontend side I'm using either VLC or Kodi 14.0 on Mac OS X or openelec on a CuBox-i4pro with the tvheadend pvr addon.
I'm currently only using SD channels and the performance is really nice.
Especially the channel switch time (which was my biggest concern) is absolutely amazing: 1 second, perfectly wife proof ;)
However, in certain situations the zaptime is around 13-15 seconds.
I've tried to isolate the problem and discovered that it does not depend on the channel being switched to but rather on the channel being switched from.
In order to reduce the issue's environment to the max I've only added the following 4 channels:
ZDF ASTRA 19.2E/11953.5H/ZDF
ARD-alpha ASTRA 19.2E/12265.5H/ARD-alpha
tagesschau24 ASTRA 19.2E/10743.75H/tagesschau24
arte ASTRA 19.2E/10743.75H/arte
Here is the zaptime table between these channels:
Time Source Channel Destination Channel
1s: ZDF ARD-alpha
1s: ZDF arte
1s: ZDF tagesschau24
1s: ARD ZDF
1s: ARD-alpha tagesschau24
1s: ARD-alpha arte
1s: tagesschau24 arte
13s: tagesschau24 ZDF
13s: tagesschau24 ARD-alpha
1s: arte tagesschau24
13s: arte ARD-alpha
13s: arte ZDF
So it turns out that if tvheadend is tuned to the mux 10743.75H all switches to a channel on any
other mux are extremely slow.
But it is fast when switching from any channelto any service located on this very mux.
I've ruled out Kodi as it also happens with VLC.
Now it gets even weirder:
If I'm tuned in on a channel on the 10743.75H mux and press stop, wait a second and then switch to a channel on another mux stream starts instantly.
With this manual workaround I can reduce the switch time to under 4 seconds but that's not really what I consider usability.
I'd be deeply grateful for any hints !
Cheers,
Vinz
