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Recording DTT with VLC

Posted: 30 Sep 2014 12:21
by morice
Hello,

Please forgive my poor english.

When I watch a digital terrestrial television program with a tuner card and VLC, if I click on the red record button, it saves another channel.

If I try right click/record directly in the Playlist, i don't see the current TV program no more and i get the VLC orange icon, it creates a line "Distribution" in the list and it also records another channel.
In addition to which I do not see how to stop recording because I can not find anything about it in the context menu ... and if I click on the red button to stop the recording, a second recording starts...

Windows 8 desktop mode.

Thanks for help.

Re: Recording DVB-T with VLC

Posted: 30 Sep 2014 14:34
by kodela
What is DTT?

Deselect in Advanced Preferences - Input / Codecs the option Prefer native stream recording.

Re: Recording DTT with VLC

Posted: 30 Sep 2014 14:50
by Rémi Denis-Courmont
You might need to select the correct program in the navigation menu, as VLC may save the whole transponder.

Re: Recording DTT with VLC

Posted: 30 Sep 2014 16:05
by morice
:)

Thanks for your answers.

What is DTT?

Deselect in Advanced Preferences - Input / Codecs the option Prefer native stream recording.
DTT: Digital Terrestrial Television.

I tryed to deselect Prefer native stream recording but it doesn't fix.

You might need to select the correct program in the navigation menu, as VLC may save the whole transponder.
It saves only one program, but you may be right: if i try to save a channel VLC seems to randomly pick one of the channels in the same multiplex.
But i still don't see how to select the one i want.

Am I right to think that "transponder" is a synonym for "multiplex" ? ► http://en.wikipedia.org/wiki/Multiplex_%28television%29

Re: Recording DTT with VLC

Posted: 30 Sep 2014 17:56
by kodela
In a packet frequency (transponder) multiple transmitters are included (mostly 4).

A transmitter is identified by the frequency and the service ID.

When in Advanced Preferences - Input / Codecs the option Prefer native stream recording is enabled, the transmitter will be recorded with the lowest service ID.

When in Advanced Preferences - Input / Codecs the option Prefer native stream recording is not enabled, the transmitter is recorded, which is also reproduced.

I think DVB-T (Digital Video Broadcasting – Terrestrial) is Digital Terrestrial Television.

Re: Recording DTT with VLC

Posted: 30 Sep 2014 18:06
by morice
Ok, in Wikipedia i found others definitions for transponder and transmitter. I was lost and couldn't understand.

To understand what you said, i replaced the word transponder by multiplex and transmitter by channel. Then everything became clear.

Anyway it works now i can record the channel i want since i unticked Prefer native stream recording (i don't know why it didn't work when i first tried, maybe i hadn't restarted VLC)...

Thanks for this tip ! :)

Of course, DVB-T is the European standard for the DTT (Digital Terrestrial Television).
Many others DTT standards exist: DVB-T2, DVB-H, ATSC, ISDB-T...

Re: Recording DTT with VLC

Posted: 30 Sep 2014 21:56
by kodela
Yes, this was it. The VLC needs to be restarted after the setting change.

Re: Recording DTT with VLC

Posted: 02 Oct 2014 00:55
by morice
And now... how to keep recording when i zap ? For now, it stops the recording.

I would like to chose a channel, start recording it then keep the recording process on, even when i zap to another program :roll:

Re: Recording DTT with VLC

Posted: 02 Oct 2014 08:42
by Rémi Denis-Courmont
You can't do that with the UI. You'd have to use the CLI, and then it's questionable whether it can even be called zapping anymore.

Re: Recording DTT with VLC

Posted: 02 Oct 2014 10:00
by kodela
Why do not you use for zapping a new instance of VLC?

Re: Recording DTT with VLC

Posted: 02 Oct 2014 12:57
by morice
You can't do that with the UI. You'd have to use the CLI, and then it's questionable whether it can even be called zapping anymore.
Do you know the CLI procedure?
Why do not you use for zapping a new instance of VLC?
Tried but the card doesn't look to provide more than one flux. This make me realize i can't zap if i'm recording, should i get a card that provide two channels at the same time?

Re: Recording DTT with VLC

Posted: 02 Oct 2014 14:54
by Rémi Denis-Courmont
Please refer to the stream output documentation or the wiki.

Re: Recording DTT with VLC

Posted: 04 Oct 2014 00:41
by kodela
What you mean with "card" and "flux"?

Re: Recording DTT with VLC

Posted: 04 Oct 2014 13:38
by morice
What you mean with "card" and "flux"?
"Flux" may be wrong: i should have said "channel" or "program".
I said it in the same sentence: "Tried but the card doesn't look to provide more than one flux. This make me realize i can't zap if i'm recording, should i get a card that provide two channels at the same time?".

"Card" is for tuner card.
I said it in my first post: "I watch a digital terrestrial television program with a tuner card and VLC..."

Wikipedia:

http://en.wikipedia.org/wiki/TV_tuner_card

http://en.wikipedia.org/wiki/Transponder
http://en.wikipedia.org/wiki/Multiplex_%28television%29

http://en.wikipedia.org/wiki/Television_transmitter
http://en.wikipedia.org/wiki/Television_channel

Re: Recording DTT with VLC

Posted: 04 Oct 2014 22:17
by kodela
No, I mean not a second card. You should start a second instance of VLC.
You can not simultaneously access different transmitters.
But you can access to different channels, which are transmitted from the same transmitter.
If you want to simultaneously access the stations of different transmitters, you need two tuner cards.

Re: Recording DTT with VLC

Posted: 04 Oct 2014 23:08
by morice
Tried but a second instance doesn't work in that case, even if i try another channel within the same multiplex. Thats why i think my card can't afford more than one channel at the same time, but i could be wrong.