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2 bases and introduction

 2.4 software projects for digital television


2.4.1 Linux based of projects

2.4.1.1 the VDR project

 The VDR software 2002 of Klaus Schmidinger in the life called51 and can free of charge in the version 1.2.6 of the homepage of the VDR-project 52 downloaded become53.
The software makes it possible to note television and radio in high picture and clay/tone quality under Linux.
The basic idea was it, a linux based, free, to develop digital video recorders is pluginbasiert developed, and differently than the conventional commercial products all requirements fairly will was, as flexibly each user merges his Plugins necessary for it in primary system of the recorder.
The SOURCE code of the software is approved, so that there is in the meantime a multiplicity Plugins, which were programmed by the interested developer municipality. So far 76 Plugins were introduced on the homepage of the VDR portal of the public.
This and further available Plugins from other collections is listed for information in the appendix C.
All these extensions can be merged and made into the VDR software thereby the power spectrum of VDR more extensively than into some ready-made devices54.
In October 2004 the free software became even the test winner in the PC magazine under five Media center programs gekürt55.
which the software of everything can, is here exemplary represented56:

Functionalities of VDR
  • Play from AVI, MPEG, DVDs, VCDs, SVCDs over the TVout of the DVB-T map.
  • Play from audio CDs with CDDB support
  • Transformation of the photographs into a space-saving format by OSD
  • Time SHIFT with an adequate map
  • Parallel admission of several transmissions on same frequency or with several maps
  • Comfortable programming of the VDRs by Internet or LAN
  • MP3 support by OSD
  • DVD navigation menu
  • Videotex support
  • Convert a format compressed by Mitschnitten, directly after the admission by OSD menu into such as VCD, SVCD, MPEG or DIVx
  • To over e.g. remove cuts of the photographs directly by remote maintenance advertising tracing
  • Streaming of the signal via LAN
  • Optical expenditure over a display
  • Rendition of pictures
  • Define from instructions (execution by OSD)


Table 7: The power spectrum of the VDR software


Since the software is so popular, in the meantime also some distributions were arranged based on Linux and are here briefly aufgelistet57:

VDR distributions
Installation LiveCD
  • LinVDR
  • C'T-VDR
  • Mulimidix
  • Gen2VDR
  • VDR inside
  • VDR4You
  • MiniVDR
  • MiniDVBLinux
  • GeexBox
  • VDR inside
  • VDRlive
  • VDRLiveCD

Table 8: VDR distributions


These distributions differ in three important criteria. They contain different compositions of Plugins and/or support certain hardware. This they possess also different sizes of 32 MT for e.g. USB-Sticks58, up to contents complete CD. Most distributions are intended for an installation; they contain "abgespeckte” Linux distribution with integrated VDR software for a fast installation on hardware configurations for living rooms or PC, even arranged.
Right the distributions specified in table 8 are to be made accessible for efforts VDR over genuine liveCD. Two acquaintance representative are more near described in the following.
A. LinVDR
LinVDR is such liveCD for an installation with integrated VDR software and approximately 40 Plugins and supplementary product lines for a comfortable operation. The operating system lying to reason is strongly reduced; LinVDR is only approximately 50 MT largely.
A goal was to be sketched it, a stable and nevertheless small VDR Linux for a simple and complete installation inclusive of automatic installation routines. The current version 0.7 can be downloaded under [cook 2004]. The distribution supports however only few DVB maps and older versions of Plugins.
b. C' T VDR
Also C'T VDR, from which develops magazine of the same name of the Heise of publishing house, supplies with a strongly reduced debianbasiertes Linux including to the VDR software and various Plugins and installation routines for a problem-free and fast installation.
The arising problems are the same as with LinVDR: The last update of the software took place in the summer 2004; Kernel, Plugins and thus also the supported maps are not current any longer. The distribution is however ideal for all, which would like themselves to assemble their own VDR box. The current version 3 can be referred under [Hei f 2004].

2.4.2 Windows based of projects


From the multiplicity commercial like also free software for HTPCs here on behalf four representatives under Windows, well-known in Germany, are mentioned.
Information is to be left reread under on the right of mentioned and is no further explanation here to find, since the practical example this thesis (diploma) is based on Linux.

Software for digital television under Windows
Name Information under
Windows Media center 2005 http://www.microsoft.com/windowsxp/mediacenter/
evaluation/hdtv/default.mspx
GB-PVR http://www.gbpvr.com/
SageTV http://www.sage.tv
TVOON Media center http://www.tvoon.org/index.html


Table 9: Software for digital television under Windows



  • 51: See [VDR-P 2005] VDR info.
  • 52: See [Schm 2005] Download
  • 53: The current test version for developers is the 1.3.24, see [VDR-P 2005] Download
  • 54: In the meantime one is in the Internet complete guidances, its own VDR box for the living room with LCD, housing with power pack, non removable disk, remote maintenance, noise protection, amplifier, to build Motherboard etc. Such boxes are commercially driven out also under the names Reelbox (vapor commodity), Topfield or Dreambox. See [VDR-P 2005] VDR info. and [home 2005] Home
  • 55: See [PC-MA 2005] software tests
  • 56: See for this table [VDR-P 2005] VDR info.
  • 57: This table was inferred [VDR-W 2005] VDR distributions.
  • 58: Under [strive 2005] it gives How ton for LinVDR on a USB stick.

 

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