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What is dvb-s2 ?

From wikipedia :

Digital Video Broadcasting - Satellite - Second Generation (DVB-S2) is an enhanced specification to replace the DVB-S standard, developed in 2003 and ratified by ETSI (EN 302307) in March 2005. The development of DVB-S2 coincided with the introduction of HDTV and H.264 (MPEG-4 AVC) video codecs.

The system allows transmission of one or more MPEG-2 or MPEG-4 audio/video streams , using QPSK or 8PSK or MAPSK (M-ary amplitude and phase shift keying) modulation with concatenated encoding.

DVB-S2 is based on the DVB-S standard which is used for satellite broadcasting, and the DVB-DSNG standard, which is used by mobile units for sending external footage back to television stations. Two new key features which were added to DVB-S are :

Status

Mumudvb currently support DVB-S2 tuning via S2API.

To tune using the DVB api version 5 you have to set the option delivery_system to one of the following values ATSC DVBC_ANNEX_AC DVBC_ANNEX_B DVBT DVBS DVBS2

For DVB-S2 the rolloff can be 20 25 35 or auto (35 by default)

The FEC is tuned via the coderate option

and the modulation option can be QPSK QAM16 QAM32 QAM64 QAM128 QAMAUTO VSB8 VSB16 8PSK 16APSK 32APSK DQPSK