How enable GPU decoding?

[jingjing]

工具 - >“首选项和输入及编解码器和剔使用GPU加速。请记住，按保存以保存设置并重新启动可变长度可变长编码后，为了确保更改启用。VLC_help
米加锥硕

[rightman]

Google Translation from the above chinese text:

"Tools -> "Preferences and the input and codec and tick use GPU acceleration. Remember, press Save to save the settings and restart VLC after variable length, in order to ensure that change is enabled. VLC_help
Mega Master cone"

[Cuba]

Hi j-b,

thanks for this new feature, its sure an leap forward to VLC.

But unfortunately, GPu decoding its not working for me. My videocard is a g92 8800GTS 512mb and the . mkv videos freeze after some seconds...

audio still goes, but video pauses...

JFYI

[VLC_help]

Cuba: you can open a new thread for that. And it would help if you would open Tools -> Messages (set Verbosity to 2) before playback and paste messages to us when problems come up.

[yukselp]

My GPU option is not enabled in preferences (greyed out, can not be clicked).
And player stutters while playing a high bit rated MKV file.

VLC Player version 1.1.15
Graphic Card: Radeon HD 5550

[Jean-Baptiste Kempf]

My GPU option is not enabled in preferences (greyed out, can not be clicked).
And player stutters while playing a high bit rated MKV file.

VLC Player version 1.1.15
Graphic Card: Radeon HD 5550

GPU is only possible on Vista and 7

[yukselp]

GPU is only possible on Vista and 7

Hmm. Thanks. That must be it.

[kdaaang]

still cant find this anywhere. im using vista. tried everything in the thread so far.

[Jean-Baptiste Kempf]

still cant find this anywhere. im using vista. tried everything in the thread so far.

Using VLC 1.1.5 ?

[ifezs001]

I have a problem with the playback, when I turned on the hardware acceleration. When I try to playback an mpg video than the picture is not viewable. I have a green line on the top of the window and the video is not viewable. Although if I turn off the the acceleration than the video is working correctly.

Is it possible to solve this problem?

Kind Regards,

[VLC_help]

If you give us more details, then maybe.

[themaster]

Oh wow. I was trying to find a way to prevent all the choppiness and lagging I was experiencing when watching HD video with multiple fast moving objects. This seems to have fixed it. I guess even my quad core can't handle video all too well on its own. I wish I knew about it before I finished watching the lagtastic movie I just watched...

[anselom]

Dear friend,
The advantage of this solution is that it can continue to apply any filter VLC accelerated video , and redirect the output of your choice ( display via any rendering tool , transcoding , video editor VLC ... ) . The disadvantage is that this solution seems less effective in terms of performance, especially with GPUs from AMD. According to information we can gather , this problem had been encountered by the teams of Adobe during the development Flash 10.1, which also operates the GPU for decoding HD video encoded in H.264 .

[Polcius]

I get an occasional hiccup from time to time while using GPU acceleration.

Anything I can try?

1.1.6 or 1.2.0 nightlies?

[VLC_help]

You can check out the messages (Tools -> Messages and set Verbosity to 2), and see what it complains.

[Polcius]

Ok, I did it. Here's the log: http://dl.dropbox.com/u/8304445/VLClog.log

[VLC_help]

main warning: mixer start isn't output start (-158433)
main debug: audio output is starving (149082), playing silence
main warning: output date isn't PTS date, requesting resampling (-45032)
main warning: buffer is 45032 in advance, triggering downsampling

are just generic desync messages. You could try OpenGL video output module and see if that helps.
http://wiki.videolan.org/WindowsFAQ-1.1 ... _output.3F

[Polcius]

main warning: mixer start isn't output start (-158433)
main debug: audio output is starving (149082), playing silence
main warning: output date isn't PTS date, requesting resampling (-45032)
main warning: buffer is 45032 in advance, triggering downsampling

are just generic desync messages. You could try OpenGL video output module and see if that helps.
http://wiki.videolan.org/WindowsFAQ-1.1 ... _output.3F

OpenGL bears worse results.

[VLC_help]

Even with VLC 1.1.4?

[Polcius]

I think it has something to do with my graphics card. I recently upgraded from a ATI HD4350 to a Nvidia GT 430. With the ATI I had no problem whatsoever.

I say this because the same problem happens with MPC-HC, and every other DXVA player I tried.

But I will try 1.1.4, to see if it makes a difference. The log I sent was from 1.1.5.

[VLC_help]

If the same issue happens in other hardware accelerated players, then VLC version shouldn't matter. More likely a driver issue then.

[Daemon69]

it's definitely still experimental for a reason. i just discovered that it was the cause of massive, massive artifacting problems.

[Jean-Baptiste Kempf]

And that is why it isn't on by default

[Sandfoam]

I have a problem with the playback, when I turned on the hardware acceleration. When I try to playback an mpg video than the picture is not viewable. I have a green line on the top of the window and the video is not viewable. Although if I turn off the the acceleration than the video is working correctly.

Same problem here.

Without GPU acceleration, MPEG files play fine. With GPU acceleration, the screen is black with no change in audio.
System: HP Mini 311-1000
MEM: 3GB
GPU: NVIDIA ION

When I compare the VERBOSITY=2 messages between running the same MPEG with/without GPU accel, there are several errors for "with GPU"(aka black screen). For example:
main debug: skipped big render time
main warning: late picture skipped
main warning: output date isn't PTS date, requesting resampling (77823)
main warning: buffer is 77824 late, triggering upsampling

What more information can I provide to help solve this problem?

Thanks again for the help.

[seanmvrck]

Tools -> Preferences and Input & Codecs and tick Use GPU acceleration. Press Save to save VLC settings and restart VLC after that to make sure changes are done.