On Thu, Oct 30, 2008 at 23:08, ps1 <[EMAIL PROTECTED]> wrote: > The system has a GeForce 6600 GT video card, with the nvidia > proprietary driver. Hardware acceleration seems fine.
Does not impact the performance of the PVR-350 at all. > Without hte ivtvfb driver, if I send a previously recorded mpeg file on > /dev/video16, everything is ok (without CPU use) All decoding is done by the decoder chip instead of the cpu. > Starting the ivtvfb driver (with the following options, witch are good > for my PAL TV, but the perf issues is the same without options ) : > options ivtvfb debug=3 osd_xres=720 osd_yres=576 osd_depth=32 > I get a /dev/fb1 driver > If I try to play the same movie, like that : > mplayer -vo fbdev:/dev/fb1 test.mpeg The plain framebuffer driver in mplayer is very cpu intensive and also the cpu is doing all decoding instead of the decoder chip on the PVR-350. You will have to get the ivtv output working which AFAIK is broken for any recent kernel. > I'm really puzzled, because this card was in use in my first HTPC, witch > was running with an athlon XP processor underclocked at 600 Mhz and > video were running smoothly. At this time, I wasn't able to configure > the system in native directfb, so I used an X11 layer in between ! I > think that this was with a 2.6.14 or 17 kernel, at this time I had to > compile the drivers. The xdriver provides accelerated xvideo and it sound like you do not have it installed and/or configured properly.Or you might just not be using the proper maplyer command. When using the xdriver you will need to pass it -vo xv to make use of it. > (I did also tests with the X11 layer, and this doesn't work better.) X11 should not be that slow so you might have some other issues not related to ivtv? What is eating the cpu cycles? > BTW, I configured the xorg.conf file directly like the sample in the > ivtv wiki, was very easy and helpful, thanks ! I just had to change the > name of the driver from ivtv to fbdev Ah, yes it changed name. If someone does not beat me to it I will update the wiki next week > Last question, not really related ! Is it possible, with the ivtvfb > driver loaded, to use the audio output of the card ? *If* you use the mpeg decoder then yes it will also put audio out. The xdriver will not output audio as it is not using the decoder chip but uses the framebuffer directly bypassing the decoder. Greets Sander _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
