View source for Ac3overdvb-patch

==Description==
The '''AC3overDVB patch''' for [[VDR]] sends digital audio data in AC3 and DTS format to the digital S/PDIF port of the DVB card. Therewith VDR has the ability to output Dolby Digital as optical or electrical S/PDIF signal.

The digital S/PDIF port of the DVB cards is only capable of sending PCM data, so the AC3 data has to be encapsulated into a PCM stream. This digital audio data stream is then received and decoded by a external Dolby Digital receiver.
{{Box Hint|
Not all DD receiver are capable of decoding an encapsulated pcm stream.}}
==Hardware requirements==
* DVB card with S/PDIF port
* compatible Dolby Digital receiver (see hint)

==Software requirements==
* patch

==Installation==
If the patch is compressed you have to unpack it bevor
<pre>
gunzip patch
</pre>
Now you can install it with
<pre>
cd $SOURCEDIR/VDR
patch -p 1 < /path/to/patch
</pre>
Note, VDR has to be recompiled now, see [[plugin installation]].

==Problems==

==Links==
{|
| [1]
| http://www.muempf.de/down
| Patche homepage
|-
| [2] 
| http://www.muempf.de/down/DD-receiver-status.txt
| List of compatible receivers
|-
| [3]
| http://www.vdr-portal.de/board/thread.php?threadid=1206
| another list of compatible receivers (german)
|-
| [4]
| http://www.vdr-portal.de/board/thread.php?threadid=1958
| AC3 with bitstreamout HOWTO and AC3overDVB Infos
|}

[[Category:Plugins]]

<!-- Link to german wiki page -->
[[de:AC3overDVB-Patch]]