The VideoLAN Forums

Posted: **04 Jun 2010 00:03**

Hi *,
sorry if this has been asked before, but I did not find it.
How does one verifies that GPU acceleration is switched on? If I play full 1080p movie, I get 100% CPU usage, some other players have 1-2% CPU usage playing same movie.

I expected to see something in the log, but if I call VLC with switches

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VLC --verbose=2 --log-verbose=2 --logmode=html --file-logging --logfile="vlc.txt"

nothing is logged.
Only success I had was with :

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VLC --extraintf=logger --verbose=2

But there I can't see much..

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C:\Users\frenky\Desktop>find /I "avc" mkv.txt

---------- MKV.TXT
[028684f0] mkv demux debug: |   |   |   + Track CodecId=V_MPEG4/ISO/AVC
[028f2460] avcodec decoder debug: libavcodec initialized (interface 0x344503)
[028f2460] avcodec decoder debug: trying to use direct rendering
[028f2460] avcodec decoder debug: ffmpeg codec (H264 - MPEG-4 AVC (part 10)) started
[028f2460] main decoder debug: using decoder module "avcodec"
[01fc9ba8] avcodec decoder debug: libavcodec already initialized
[01fc9ba8] avcodec decoder debug: codec not found (Text subtitles with various tags)
[028f2460] avcodec decoder debug: using direct rendering

C:\Users\frenky\Desktop>

So to questions at the end

//EDIT

Windows 7 Pro (up to date); nVidia 8800GT latest drivers

Posted: **05 Jun 2010 03:36**

Same problem here.

Playing 1080p I get 70%-80% even when enabling hardware acceleration (CPU usage doesn't change when activated) whereas MPC uses 9%-15% when hardware acceleration is activated.

In this case I'm using Windows XP SP3 with an nVidia 8600M GT (512MB) and the 197.16 drivers.

Here's some debugin'

https://docs.google.com/document/edit?i ... HRjw&hl=en

Posted: **05 Jun 2010 05:08**

AFAIK, on Windows XP VLC GPU acceleration does not work, but I do not know why it does not work for me on Windows 7...

Posted: **05 Jun 2010 05:23**

AFAIK, on Windows XP VLC GPU acceleration does not work, but I do not know why it does not work for me on Windows 7...

Aham. I'll delete the debug info then.

Posted: **06 Jun 2010 19:52**

yeah i agree with this there should be some sort of indicator like possible the controls add a gpu icon that turnes on when the gpu acceleration is on so we know that it should be on

Posted: **08 Jun 2010 01:30**

GPU accel is ONLY in Vista/7

And, you need to apply the switch in the preferences.

Posted: **08 Jun 2010 12:21**

It would be helpful if there were no switch on windows xp since it doesn't work with it.

Posted: **08 Jun 2010 14:24**

Fill a bug on this, but this is a good idea.

Posted: **08 Jun 2010 14:45**

Here you go =)

https://trac.videolan.org/vlc/ticket/3727

Posted: **11 Jun 2010 23:00**

GPU accel is ONLY in Vista/7

And, you need to apply the switch in the preferences.

Can you please tell what is that switch?
Thanks in advance!

Posted: **11 Jun 2010 23:18**

Found it...

The VideoLAN Forums

GPU accel on?

GPU accel on?

Re: GPU accel on?

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Re: GPU accel on?