DVB-T Broadcast
From 24C3 Public Wiki
All talks are also broadcast via DVB-T stream on a public frequency.
Contents |
Required hardware
For reception you need a common DVB-T receiver stick that is attached to a USB port at your notebook or PC. Alternatively you can use a TV set with integrated DVB-T tuner and decoder or a DVB-T set top box.
Stream content
The stream contains four programs:
- Live video/audio from room 1
- Live video/audio from room 2
- Live video/audio from room 3
- ChaosTV with upcomming events
Transmission parameters
Channel 22 Frequency 482.000 MHz
Modulation COFDM Constellation QAM-16 Mode 8K Bandwidth 8MHz FEC 3/4 Guardinterval 1/8
Configuration
Windows: When you're using Windows-based DVB-T software (probably the stuff that came with the stick...), just do a scan on channel 22 or on 482.000 MHz. The software should detect all programs within the stream and display the program names.
Linux: Most Linux DVB players need a configuration file called "channels.conf", which contains a list of all receivable programs.
24C3 Track 1:482000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:257:258:1 24C3 Track 2:482000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:513:514:2 24C3 Track 3:482000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:769:770:3 24C3 Auxiliary:482000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_AUTO:QAM_16:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE:1025:1026:4
If you want to the scan yourself, dvbscan needs the following line in a configuration file:
T 482000000 8MHz 3/4 NONE QAM16 8k 1/8 NONE
