RPi 4 + TV Hat - Full Mux record

Mirko J.

Hi everyone,

I'm looking for solution torecord full mux (Total bandwidth for the MUX is27.30 Mbps ), would love to record for a full week 24/7.
is that possible?

And How to conf. it?

tnx

davep

I don't believe recording a mux can be done through the DVR but there is a workround.

In the TVH GUI, navigate to Configuration -> DVB Inputs -> Muxes

Hover over the 'Play' button at the left side of the entry for your chosen mux and right-click 'Copy Link' in your browser

Paste this link into a terminal window. You should have something like

http://my.ip.address:9981/play/ticket/stream/mux/481c9f4f071521efe685f08d162cb78b?title=498MHz%20%2F%20Sandy

Edit this line into the form

wget http://tvhuser:pass@my.ip.address:9981/stream/mux/481c9f4f071521efe685f08d162cb78b -O mymux.ts

Running this command in your terminal should save the entire mux to the given file. The bandwidth of 27Mbps equates to about 2TB per week which is not impossible.

Saen Acro

27 Mbps = 3,375 MB/s = 202,5 MB/min = 12150 MB/hour = 291600 MB/day = 2041200 MB/week :)
it can be used in place of WGET command TCPDUMP

Mirko J.

Dave tnx for replay, it's helpful.

I have some other questions...
* Is there a function inside tvheadend web gui for that kind of record in general?
(I tried with wget and it works over OSX, would love that RPi do the whole job by itself) [I bought RPi just for this kind of purposePVR to go with low power consumption]
* How to preserve EPG & Teletext?
(it would be nice to have a option for "search & find")
* I have a question for, Status >> Stream >>SRN & Signal Strength

(mySNR 22dB & Signal Strength -71dBm)

OK next problem what I have ... when I dump the mux I get jitter effect at the VLC playback, simple or possible that the graphic card can't handle full mux decode?
The GPU isIntel HD Graphics 6000 1536 MB it's 1.5GB I personally think that's enough to work, but it could be that the TV card can't capture full mux?
Not sure in this problem.
What's your opinion?

Saen Acro

Player cannot demux MUX stream, GPU is not evolved in this.
Use TSDUCK to make processing.

Mirko J.

Hi Saen

VLC handels very good ts when I run with one stream as well very low CPU usage.

Could you be more specific what should I do with TSDUCK, some instruction after installing it?

tnx

davep

What are you planning to do with the mux recording?

You could run the wget command via a script on the Pi and save the recording there, but you'd have to make it available to wherever you plan to use the file via NFS or similar.

Whatever EPG data was broadcast on the mux will be in the recording, but of course the timestamps will be in the past.

Saen Acro

Mirko J. wrote:
> Hi Saen
>
> VLC handels very good ts when I run with one stream as well very low CPU usage.
>
> Could you be more specific what should I do with TSDUCK, some instruction after installing it?
>

> tnx

Make difference betwinMPTS (full mux) andSPTS (one channel)

TSDuck have very good documentation.

Mirko J.

Dave Pickles wrote:

> What are you planning to do with the mux recording?

I'm working on a archive of news on my local TV station.

> You could run the wget command via a script on the Pi and save the recording there, but you'd have to make it available to wherever you plan to use the file via NFS or similar.

Can I expect that RPi won't brake the ts footage when I have failure with electricity?

> Whatever EPG data was broadcast on the mux will be in the recording, but of course the timestamps will be in the past.

What app can read EPG out of .ts?

What can you tell me about my signal, lower better or ..?SRN & Signal Strength

saen acro wrote:
>Make difference betwin MPTS (full mux) and SPTS (one channel)

>TSDuck have very good documentation.

Can you be more specific about WGET command TCPDUMP, MPTS (full mux) and SPTS (one channel). I read the 30pages of documentation TSDuck, but Homebrew gave up support for my OSX. Is there any alternative?

Saen Acro

Mirko J. wrote:
> h3. I'm working on a archive of news on my local TV station.
It's time to get real hardware not developer device's
>
> h3. Can I expect that RPi won't brake the ts footage when I have failure with electricity?

Uninterruptible Power Supply or UPS

> h3. What app can read EPG out of .ts?

TVHeadend itself.

> h3. What can you tell me about my signal, lower better or ..?SRN & Signal Strength You can buy signal meter
>
> h3. Can you be more specific about WGET command TCPDUMP, MPTS (full mux) and SPTS (one channel). I read the 30pages of documentation TSDuck, but Homebrew gave up support for my OSX. Is there any alternative?

Be more critical to your knowledge.

https://tvheadend.org/d/5755-howto-catchup-iptv-a-k-a-1-hour-tv-in-work

Mirko J.

saen acro wrote:
> Mirko J. wrote:
> >I'm working on a archive of news on my local TV station.

> It's time to get real hardware not developer device's

It's my home project not a job. I'm looking for a solution not a 100% secure job income. It's about preserving some history in general.

But let's talk about pro equipment, I'm listening.

> >
> >Can I expect that RPi won't brake the ts footage when I have failure with electricity?

> Uninterruptible Power Supply or UPS

Yes I thought about it too. But my concern was what if it would happen would the footage be broken or does the TVH record & save by everyX MB

>
> >What app can read EPG out of .ts?

> TVHeadend itself.

How?

How do I uplod .ts after I recorded with wget?

>
> >What can you tell me about my signal, lower better or ..?SRN & Signal Strength > You can buy signal meter

But what about the reading in generalSRN & Signal Strength

> >Can you be more specific about WGET command TCPDUMP, MPTS (full mux) and SPTS (one channel). I read the 30pages of documentation TSDuck, but Homebrew gave up support for my OSX. Is there any alternative? > Be more critical to your knowledge.

> https://tvheadend.org/d/5755-howto-catchup-iptv-a-k-a-1-hour-tv-in-work

I'm trying but I would love if you could help more with the directions.
https://tvheadend.org/d/5755-howto-catchup-iptv-a-k-a-1-hour-tv-in-work not a single word about wget,tcpdump, TSDuck or Homebrew.

Saen Acro

Wondering when will start to experiment?

There is no chance to learn something, without some real practice.

With last link you can do all you need by recording very long (as yoour storage allow) time.
Take some old real pc X86 add some old harddisk's in LVM and record as long as you can.

You can organise records withjellyfin

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It's very unconfortable to read your formating