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Questions tagged [dvb]

DVB - a set of digital TV standards from the Digital Video Broadcasting Project

The DVB Project is a industry consortium that develops specifications for digital television systems, which are turned into standards by international standards bodies such as ETSI or CENELEC. DVB's open technical standards cover a broad range of of digital TV technologies for the delivery of digital TV over satellite, cable, terrestrial, and IPTV, as well as other broadcast services.

The DVB consortium is composed of manufacturers, software developers, network operators, broadcasters and regulators. It's specifications are available free of charge from the DVB standards page. One of the more prominent specifications is the one that describes DVB Service Information (DVB-SI), i.e. tables, descriptors, etc. in DVB systems; it's name is ETSI EN 300 468.

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How can I concatenate ATSC streams from DVB card?

I'm trying to make a simple "TV viewer" using a Linux DVB video capture card. Currently I watch TV using the following process (I'm on a Raspberry Pi): Tune to a channel using azap -r TV_CHANNEL_HERE. This will supply bytes to device…
Sean Woods
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Liteon hybrid usb dvb is not working in ubuntu 13.10

I'm trying to install an hybrid usb dvb on ubuntu 13.10 but after looking for different answers in google i'm still in the same point, so the usb dvb does not work. When I make dmesg|grep usb I recieve this: new high-speed USB device number 4 using…
Jose A. Alonso
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can hbbtv app get access to EIT inside of a host?

Does anybody know if hbbtv application being running in hbbtv enabled host (like iDTV or STB) can get access to EITs that come with a DVB stream, not through internet? regards alex
user2976954
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Playing mpeg2ts with Gstreamer-1.0 on Raspberry Pi

Good day fellow programmers, I am trying to play a .ts file with gstreamer straight on a RPi. Gstreamer-1.0 as well as gst-omx have been successfully installed and this example pipeline runs like a charm: gst-launch-1.0 -v filesrc…
Plox
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Robust rtp video streaming over IP on Linux

I'm looking for a way to stream video in a robust way using Linux on an IP network. I know one could use FEC and RFC5109 standardizes it, but I couldn't find any implementation of it. The DVB standard uses some sort of FEC itself, but I could find…
Metiu
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difference between video Scrambling and video Encryption

I am bit confused between video scrambling and video encryption. I know both are the ways to make the safe delivery of the content and both have de-scrambler and de-crypt and use a key as well but in DVB broadcast we use scrambling at CAS level and…
NitinG
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How to extract subtitles from .wtv file using ffmpeg?

does anyone know how to extract subtitles from a wtv file using ffmpeg? i have tried many different commands. None of them works. the closest is this one ffmpeg -i input.wtv -vn -an -codec:s:0 srt test.srt But it complains Error while encoder for…
Hoy Cheung
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correcting captured dvb-t video from two different mpeg-ts sources

I have captured same channel (two files - full multiplex of dvb-t - mpeg-ts) from different dvb-t transmitters: Transmitter-A.ts Transmitter-B.ts I would like to merge these streams to produce one perfect video of channel to correct failtures in…
okocian
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How can I decode DVB-S2 packets with Wireshark

Searching for information on DVB-S2 BBframe structure I went into this wiki: http://wiki.wireshark.org/DVB-S2 Wireshark seems to decode this kind of data. I'm using Wireshark 1.8.2 on ubuntu 12.04 - and everithing seems to be fine. But I've…
gabriel_agm
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DVB-S2 communication between two USRP B200

Thank you for reading this. I'm having difficulties with DVB-S2 communication between two USRP B200 SDR boards that are connected with SMA cable. For hardware set-up, I'm using Raspberry Pi 4 (4 GB) to execute GNU Radio Companion, and using USB 3.0…
Seth
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Method for GNU Radio signal error rate (USRP B200 DVB-S2)

I'm using two USRP B200 boards to make RF communication between them with SMA cable wired. And I'm using GNU Radio Companion with DVB-S2 flowgraphs to send&receive some test videos. Thankfully, these flowgraphs did…
Seth
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split dvb url address into separate values

Let assume we have such URL: dvb://1.3f3.255c.15 my question is how to parse this address in following way: val1 = 1 val2 = 3f3 val3 = 255c val4 = 15 First idea is to use strchr() from standard C library, but maybe done it before. I would like to…
bartebly
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How can I analysis DVBS2 packets in Wireshark 3.4.6?

I import dvb-s2_bb_example.pcap (which has been published by wireshark.org) in Wireshark 3.4.6. It is not interpreted correctly. I have enabled all protocols in Analyze->Enabled Protocols By using Wireshark 1.10.0 it is interpreted correctly, but I…
Mohammad Hassan Shammakhi
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What is the rationale for the encoding procedure described in the DVB-S2 standard for LDPC codes?

I have not found an explanation on why accumulating the given parity check addresses and then xoring the accumulated values gives the codeword of the LDPC code. The close it gets the Wikipedia explanation of "Example Encoder" but it happens to have…
Eduardo Flores Barreto
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How to find the filter coefficients for a DVBS2 shaping SRRC?

in the DVBS2 Standard the SRRC filter is defined as How can i find the filter's time domain coefficients for implementation? The Inverse Fourier transform of this is not clear to me.
Eduardo Flores Barreto
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