[Mplayer-dvb] A question

[Håvard Rast Blok]

Thor Eivind Cappelen Brantzeg wrote:

> At work we are doing tests on IP based DVB broadcasters. That is
> products from Minerva, Optibase and Tandberg that takes clear DVB
> signals and multicasts the streams out on the LAN over UDP. These
> streams are mpeg2 transport streams in the same format as normal DVB.
> Is it possible to use Mplayer to decode a given multicast address?
> That is is it able to join a given multicast channel and decode the
> mpeg2 stream therein?

Hi Thor Eivind and other DVB developers,

I am working at Ostfold College, Norway with multi casting of the
national television channels (NRK). We are currently using DVBStream to
send the stream. This program reads the DVB-S card (Happauge) and sends
MPEG2-TS packets through RTP.

The client is more complex. By using dumprtp (from DVBStream) the user
is able to receive the stream. This needs to be converted to a PS
stream. (using ts2ps in the mpegtools package by LinuxTV). To give
MPlayer a smooth stream, we use a separate buffer application. (We have
not tried the cache functionality of MPlayer yet) Finally, the stream is
piped to MPlayer. This results in the following command:

dumprtp <MBone-IP> <port> | ts2ps 0 0 | bfr -m 1024k | mplayer -

We are currently using IP 224.2.47.174 and port 5004, streaming "NRK
Tegnspråk" (sign language) This is only a test service, however feel
free to give feedback on the stream quality.

The programs mentioned above have these home pages:

+ DVBStream
http://www.linuxstb.org

+ LinuxTV
http://www.linuxtv.org
Download the latest driver here:
http://www.linuxtv.org/download/dvb/
(siemens_dvb-0.9.3.tar.gz)

+ Buffer
http://www.glines.org/software/buffer.html

--
Håvard Rast Blok
Østfold College

http://media.hiof.no