Ac3overdvb-patch: Difference between revisions
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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. |
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. |
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{{Box Hint| |
{{Box Hint| |
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Not all DD receiver are capable of decoding an encapsulated pcm stream.}} |
Not all DD receiver are capable of decoding an encapsulated pcm stream.}} |
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==Hardware requirements== |
==Hardware requirements== |
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* DVB card with S/PDIF port |
* DVB card with S/PDIF port |
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Revision as of 18:58, 21 September 2004
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.
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Hint |
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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
Installation
If the patch is compressed you have to unpack it bevor
gunzip patch
Now you can install it with
cd $SOURCEDIR/VDR patch -p 1 < /path/to/patch
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 |