Difference between revisions of "VLC GPU Decoding"
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= Introduction to GPU decoding in VLC = | = Introduction to GPU decoding in VLC = | ||
| − | The VLC framework can use your ''graphic card'' (aka GPU) to decode H.264 streams (wrongly called HD videos) under certain circonstances. | + | The VLC framework can use your '''''graphic card''''' (aka GPU) to decode H.264 streams (wrongly called HD videos) under certain circonstances. |
| − | VLC, in its '''modular''' approach and its transcoding/streaming capabilities, does decoding in GPU at the decoding stage only and then gets the data back to go to the other stages (streaming, filtering or plug any video output after that). | + | VLC, in its '''modular''' approach and its transcoding/streaming capabilities, does decoding in GPU at the '''decoding stage only''' and then gets the data back to go to the other stages (streaming, filtering or plug any video output after that). |
What that means is that, compared to some other implementation, GPU decoding in VLC can be slower because it needs to get the ''data back from the GPU''. But you can plug '''ANY''' video output (sink) to it and use '''all '''the VLC video filters. | What that means is that, compared to some other implementation, GPU decoding in VLC can be slower because it needs to get the ''data back from the GPU''. But you can plug '''ANY''' video output (sink) to it and use '''all '''the VLC video filters. | ||
| − | === Windows === | + | === Windows === |
| − | VLC supports [http://en.wikipedia.org/wiki/DirectX_Video_Acceleration DxVA] in its version '''2.0'''. That means that ''Windows Vista'', ''Windows 2008'' and ''Windows 7'' are required. If you are using ''Windows XP'', VLC cannot work for you yet. | + | VLC supports [http://en.wikipedia.org/wiki/DirectX_Video_Acceleration DxVA] in its version '''2.0'''. That means that ''Windows Vista'', ''Windows 2008'' and ''Windows 7'' are '''required'''. If you are using ''Windows XP'', VLC cannot work for you yet. |
=== Linux === | === Linux === | ||
On Linux, there is code for VDPAU and VAAPI. There is also some code for a VAAPI video output, that isn't merged in the current Git. | On Linux, there is code for VDPAU and VAAPI. There is also some code for a VAAPI video output, that isn't merged in the current Git. | ||
Revision as of 07:18, 27 November 2009
Introduction to GPU decoding in VLC
The VLC framework can use your graphic card (aka GPU) to decode H.264 streams (wrongly called HD videos) under certain circonstances.
VLC, in its modular approach and its transcoding/streaming capabilities, does decoding in GPU at the decoding stage only and then gets the data back to go to the other stages (streaming, filtering or plug any video output after that).
What that means is that, compared to some other implementation, GPU decoding in VLC can be slower because it needs to get the data back from the GPU. But you can plug ANY video output (sink) to it and use all the VLC video filters.
Windows
VLC supports DxVA in its version 2.0. That means that Windows Vista, Windows 2008 and Windows 7 are required. If you are using Windows XP, VLC cannot work for you yet.
Linux
On Linux, there is code for VDPAU and VAAPI. There is also some code for a VAAPI video output, that isn't merged in the current Git.
