[mythtv-users] 0.20/XvMC/Nvidia 6150 questions

Drew Bernat abernat at zathras.net
Mon Sep 11 20:54:54 UTC 2006


I'm hoping someone out there has the same setup I do :)

I just installed 0.20 and I'm testing it out. Thing is, I'm having a  
hard time checking if XvMC is working.

Watching a SD recording (off a PCHDTV-5500), with the following  
settings on, I'm getting 50% CPU usage on a AMD64 3000+.

Deinterlacing: off (Bob gets the CPU to 90%ish)
Preferred decoder: XvMC
Enable OpenGL Sync: Off (turning it on gets the CPU to 70%)

NVidia binary drivers, version 8774; a 6150 chipset motherboard using  
the built-in video out.


I've seen that XvMC is supposed to get CPU usage down to the 10%  
range, but I've never seen that much of a decrease. Am I missing  
something?

 From the log file:

2006-09-11 15:52:27.782 XvMCSurfaceTypes::find(w 720, h 480, chroma  
1, vld 0, idct 1, mpeg2, sub-width 0, sub-height 0, disp, p<= 274,  
2740 <=p, port, surfNum)
2006-09-11 15:52:27.798 Trying XvMC port 274
2006-09-11 15:52:27.815 Found a suitable XvMC surface 0
2006-09-11 15:52:27.816 ~VideoOutputNull()
2006-09-11 15:52:27.832 VideoOutputXv: @ j=1 Looking for flag[s]:  
XvInputMask
2006-09-11 15:52:27.865 VideoOutputXv: Adaptor#0: NV17 Video Texture  
has flag[s]: XvInputMask XvImageMask
2006-09-11 15:52:27.882 XvMCSurfaceTypes::find(w 720, h 480, chroma  
1, vld 0, idct 1, mpeg2, sub-width 0, sub-height 0, disp, p<= 274,  
2740 <=p, port, surfNum)
2006-09-11 15:52:27.898 Trying XvMC port 274
2006-09-11 15:52:27.915 Found a suitable XvMC surface 0
2006-09-11 15:52:27.940 VideoOutputXv: Grabbed xv port 274
2006-09-11 15:52:27.956 VideoOutputXv: XvMC surface found with IDCT  
support on port 274
2006-09-11 15:52:27.981 VideoOutputXv: Closing XVideo port 274
2006-09-11 15:52:27.999 detectInterlace(Detect Scan, Interlaced Scan,  
29.97, 480) ->Interlaced Scan
2006-09-11 15:52:28.023 AFD: Looking for decoder for MPEG2VIDEO_XVMC
2006-09-11 15:52:28.040 AFD: Opened codec 0x8f6740, id 
(MPEG2VIDEO_XVMC) type(Video)
2006-09-11 15:52:28.056 AFD: Stream #1, has id 0x84 codec id AC3,  
type Audio, bitrate 192000 at 0x0x14d4730
2006-09-11 15:52:28.073 AFD: Looking for decoder for AC3
2006-09-11 15:52:28.090 AFD: Opened codec 0x14994b0, id(AC3) type(Audio)
2006-09-11 15:52:28.106 RingBuf(/mnt/store/recordings/ 
2213_20060911080000.mpg): CalcReadAheadThresh(3136 KB)
                          -> threshhold(114 KB) min read(32 KB) blk  
size(64 KB)
2006-09-11 15:52:28.125 Opening ALSA audio device 'hw'.
2006-09-11 15:52:28.261 Dec: Trying to select track (w/lang)
2006-09-11 15:52:28.281 Dec: Selecting first track
2006-09-11 15:52:28.298 Dec: Selected track #1 in the Unknown language 
(0)
2006-09-11 15:52:28.314 Resyncing position map. posmapStarted = 0  
livetv(0) watchingRec(0)
2006-09-11 15:52:28.373 Position map filled from DB to: 53865
2006-09-11 15:52:28.390 SyncPositionMap prerecorded, from DB: 3592  
entries
2006-09-11 15:52:28.406 SyncPositionMap, new totframes: 53865, new  
length: 1797, posMap size: 3592
2006-09-11 15:52:28.422 AFD: Position map found
2006-09-11 15:52:28.439 AFD: Successfully opened decoder for file: "/ 
mnt/store/recordings/2213_20060911080000.mpg". novideo(0)
2006-09-11 15:52:28.468 VideoOutputXv: ctor


Drew

--
Drew Bernat
abernat at zathras.net
"Gentlemen, the stegosaur. Discuss" -- Axe Koala, 8-bit Theater



-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mythtv.org/pipermail/mythtv-users/attachments/20060911/06163b08/attachment.htm 


More information about the mythtv-users mailing list