Sat>IP Server Scan Issues

Alex May

Hi, I've got a Schwaiger MS41IP Sat IP unit (never heard of the make until recently).

Tvheadend doesn't seem to be able to scan with this and if it does it's with sporadic results. DVB-S and no DVB-S2 mixes generally. Think its hardware is similar to an TSS400 and EXIP 414 so wondered if anyone with these could offer any insight?

I have tried scanning with other software and it's equally as unsuccessful. I'm using a multi switch and an EXIP 418 with Unicable and works flawlessly so know the 'input' is ok. Unsure if the device is faulty.

Thanks in advance.

Jonas Lang

Try using a simple LNB to sat/ip tuner connection without any switches and try a fresh scan. It sounds like your LNB to sat/ip tuner connection may be the problem. What tuner does TVH report in the tuner setup.

Alex May

I hear you on this. I have a wideband LNB so unfortunately not completely possible.

What I have tried is setting the unit to standard LNB and just using one input from the switch and I do get the same scan results. I’ve also tried different versions of tvh to see if that would help and no joy.

I’m not pointing the finger at TVHeadend as the issue, just want sure where the best place to post a question like this!

Not really sure what to try now! Thanks

Flole

You could ask the manufacturer if they are willing to donate a unit for testing and fixing. That way they can be sure that Tvheadend works properly with the device.

Other than that, you can try with other software like DVBViewer to check if it's an issue only with Tvheadend or with other software aswell.

Alex May

I asked the manufacturer if they could suggest anything which would be creating this issue and any idea of any recommended tvheadend settings based on the issues I was describing.

They simply said “ We are not aware of the other problems you describe.”

I will ask about a replacement unit however I have a feeling I know what they’ll say given the age and fashion of sat>ip units!

Thanks again

Jonas Lang

Here’s a perfectly good Sat/IP tuner which works perfectly with TVH. https://telestar.de/en/produkt/digibit-twin/

Chances are that the manufacturer you dealt with knows nothing about TVH and even less about Linux.

Is there any recommended application that their tuner would actually work on. Reading this thread doesn’t inspire any confidence https://tvheadend.org/d/3847-4-1-2045-many-technical-questions-due-to-missing-or-hard-to-find-clear-docs

Alex May

I will try them again. Yes indeed the twin is probably the most reliable solution in hindsight I did have one a long time ago.

Alex May

I reinstalled the latest firmware and found while streaming a channel it’s seems to scan ok!

Jonas Lang

So you were missing the correct manufacturer’s firmware from the tuner which prevented TVH from recognising the tuner. Is that correct.

Alex May

Not sure if it was missing but reinstalling it helped - via USB recovery style. But the scanning only seems to work when it's already doing something then it successfully scans all muxes.

Alex May

When streaming some channels I do often get errors like;

"Continuity counter error (total 1)"
"H264 @ #5000 Continuity counter error (total 1)"
"tbl-base: pmt: 10788V in DVB-S Astra: invalid checksum (len 250, errors 1)"

"tbl-pass: pass-pmt: -: invalid checksum (len 250, errors 1)"

Are these usual/ok?

Jonas Lang

What profile do you use to stream TVH. I find that pass through as .ts streams to a front end client works best

Alex May

Yeah using the passthrough profile in it's default values

Jonas Lang

Is there any WiFi involved in your setup or is it all wired. What’s the quality of the signal from your dish to your tuner like. What does the signal show up in the Status tab

Alex May

I'm actually testing this with my laptop on VLC which is currently on WiFi, usually stream to TVs with wired Apple TVs. I'm just checking this playlist of channels through. Just odd seeing the log with

TSID change detected - old 0814 (2068), new 07f9 (2041)

Unsure what the issue is when a scan has been recently made.

Jonas Lang

I can’t help you with playlists. Don’t use them. I purely use DVBS/S2 via satellite dish direct to tuner and streamed to client.

Might be worth reading this thread https://tvheadend.org/d/739-how-to-automatically-deactivate-tvheadend-tuner-respectively-when-not-using-live-tv

Alex May

The channels playlist I’m using on Tvheadend. How do you tune ‘direct to tuner’? Are you saying you don’t use Tvheadend?

Jonas Lang

Yes I use TVH. Just follow the Wizard instructions for creating a network for DVBS, supply a predefined mux list for the satellite you are tuning to, select scan and once it completes map the services that were found. You’ll have all your available channels and no playlists involved there.

Alex May

Sorry - when it maps you’re able to link to an m3u file, the ‘channels’. I see that as a playlist and sounds like what you’re using? Or have I misinterpreted what you’ve said?

Jonas Lang

Why would I need a playlist when I have direct access to the individual channels. As an example I’d use Kodi PVR as my client which would import all my channels into Kodi for Live TV. Playlists are usually deployed in an IPTV setup.