Re: Simultaneous recordings from one frontend

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Hi Pascal,

I've written a very small program that does just that :
https://svn.tuxicoman.be/listing.php?repname=dvbsplit
It's a quick hack, there is probably a better way to do this but at
least it works :)

To get the sources : "svn checkout
https://svn.tuxicoman.be/svn/dvbsplit/trunk dvbsplit". Check the readme
for compilation.

You'll need to tune to the right TP with `{stc}zap -r`, then start it
and it will dump everything in the directory.

HTH,
  Guy

On Wed, 9 Mar 2011 15:20:06 +0100
Pascal JÃrgens  <lists.pascal.juergens@xxxxxxxxxxxxxx> wrote:

> Hi all,
> 
> SUMMARY: What's the best available tool for demultiplexing into
> multiple simultaneous recordings (files)?
> 
> I'm looking for a way to record a program (video, audio, subtitle,
> teletext PIDs) to overlapping files (ie, files2 should start 5
> minutes before file1 ends). This means that two readers need to
> access the card at once. As far as I can tell from past discussions
> [1], this is not a feature that's currently present or planned in the
> kernel.
> 
> So while searching for a userspace app that is capable of this, I
> found two options[3]:
> 
> - Adam Charrett's dvbstreamer [2] seems to run a sort-of ringbuffer
> and can output to streams and files. However, it's not all too
> stable, especially when using the remote control protocol and in low
> signal situations.
> 
> - the RTP streaming apps (dvblast, mumudvb, dvbyell etc.) are
> designed to allow multiple listeners. The ideal solution would be
> something like an interface-local ipv6 multicast. Sadly, I haven't
> gotten that to work [4].
> 
> Hence my questions are:
> - Am I doing something wrong and is there actually an easy way to
> stream to two files locally?
> - Is there some other solution that I'm not aware of that fits my
> scenario perfectly?
> 
> Thanks in advance,
> regards,
> Pascal Juergens
> 
> [1]
> http://www.linuxtv.org/pipermail/linux-dvb/2008-February/024093.html /
> http://thread.gmane.org/gmane.linux.drivers.video-input-infrastructure/15413
> [2] http://sourceforge.net/projects/dvbstreamer/
> 
> [3] There's also the Linux::DVB::DVBT perl extension, but in my tests
> it wasn't happy about recording anything: "timed out waiting for
> data : Inappropriate ioctl for device at /usr/local/bin/dvbt-record
> line 53"
> 
> [4] dvblast, for example, gives "warning: getaddrinfo error: Name or
> service not known error: Invalid target address for -d switch" when
> using [ff01::1%eth0] as the target address. Additionally, I wasn't
> able to consume a regular ipv4 multicast with two instances of
> mplayer - the first one worked, the second one couldn't access the
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