[vlc] Re: vlc 0.8.1, Unichrome Pro, no video

[Dermot McGahon]

On Wed, 01 Jun 2005 15:30:01 +0100, MagicITX <magicitx at gmail.com> wrote:

>> First thing to try is vlc -V x11 to determine if the problem is with
>> xvideo. Also try mplayer and xine forcing them to xvideo. VLC defaults
>> to xvideo. mplayer defaults to x11 but can be changed with -vo xv (use
>> -vo help to list possible video outputs).
>
> vlc works with x11 and mplayer works with xv.
>
>>
>> Next thing to try is --xvideo-chroma yv12. Not sure that will work, but
>> worth worth a try.
>>
>> There was an xvideo related bug with the CLE266 h/w a while back.
>
> I'm seeing video with this option but it is not using the hardware
> acceleration.  I'm getting 40% cpu utilization for X and 50% for vlc.

Is this the same CPU usage you get when using vlc with x11?

The high cpu usage for X would indicate that it is falling back to
x11 - do the logs confirm that?

A couple of obvious differences between our logs. You get "forced"
packed YUY2, I get planar YV12. You should only get forced chroma
if you specify it. I don't think we support this chroma, so better
not try and force it.

The second is that the render picture to system pictures mappings
are different. I'm not sure if this is significant.

You won't get h/w mpeg decoding but you know that right? The best
you will get is XV acceleration.

Fullscreen PAL D1 MPEG-2 with light deinterlacing (discard filter)
costs about 60% on a 1Ghz processor using vlc/xvideo.

Try and let vlc pick the chroma. If the logs indicate it is still
falling back to x11, we'll start debugging the video output code.



Dermot.
--



Your CN400 xvideo output:
-------------------------

[00000261] xvideo video output debug: forcing chroma 0x32595559 (YUY2)
[00000261] xvideo video output debug: adaptor 0, port 64, format
0x32595559 (YUY2) packed
[00000191] main module debug: using video output module "xvideo"
[00000261] main video output debug: waiting for thread completion
[00000261] main video output debug: got 8 direct buffer(s)
[00000261] main video output debug: picture in 720x480, chroma
0x30323449 (I420), aspect ratio 16:9
[00000261] main video output debug: picture out 720x480, chroma
0x32595559 (YUY2), aspect ratio 16:9
[00000261] main video output debug: looking for chroma module
[00000261] main video output debug: probing 9 candidates
[00000009] main module debug: using chroma module "i420_yuy2_mmx"
[00000261] main video output debug: indirect render, mapping render
pictures 0-7 to system pictures 8-15
[00000261] main video output debug: thread 98311 (video output)
created at priority 0 (src/video_output/video_output.c:443)


My CLE266 xvideo output:
------------------------

[00000309] main video output debug: allocating plugin:  
/usr/lib/vlc/video_output/libxvideo_plugin.so
[00000309] xvideo video output debug: adaptor 0, port 56, format  
0x32315659 (YV12) planar
[00000248] ts demuxer debug: pid[16] unknown
[00000309] xvideo video output debug: Window manager supports NetWM
[00000309] xvideo video output debug: Window manager supports  
_NET_WM_STATE_FULLSCREEN
[00000309] xvideo video output debug: Window manager supports  
_NET_WM_STATE_ABOVE
[00000309] xvideo video output debug: Window manager supports  
_NET_WM_STATE_BELOW
xcommon: calling XRaiseWindow()
[00000229] main module debug: using video output module "xvideo"
[00000309] main video output debug: got 8 direct buffer(s)
[00000309] main video output debug: picture in 720x576 (0,0,720x576),  
chroma I420, ar 16:9, sar 64:45
[00000309] main video output debug: picture user 720x576 (0,0,720x576),  
chroma I420, ar 16:9, sar 64:45
[00000309] main video output debug: picture out 720x576, chroma I420, ar  
16:9, sar 64:45
[00000309] main video output debug: direct render, mapping render pictures  
0-6 to system pictures 1-7
[00000309] main video output debug: waiting for thread completion
[00000309] main video output debug: thread 129964976 (video output)  
created at priority 0 (src/video_output/video_output.c:451)

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