On 07/07/2010 05:33 AM, Grant wrote: >>> I've been using VDPAU acceleration to play back Blu-Ray rips for a >>> while, but the extra layer is getting to be quite a hassle so I'm >>> trying to get decent performance via software decoding. It has >>> actually come a long way since the last time I tried and playing >>> Blu-Ray rips via mplayer is nearly watchable. I'm using a dual-core >>> 3.1Ghz CPU and one of the cores is only taxed up to 60% during >>> playback, but frames are still being dropped constantly. Does anyone >>> know where the bottleneck might be? >> >> Not sure. Could be wrong CPU load display; which tool do you use to get the >> CPU load? > > I use top. On the mplayer list, people were saying they too get 60% > CPU load but no playback problems. > >> Anyway, if you're not already doing so, you might want to try the >> multithreaded version of mplayer so both CPU cores can do decoding. It's in >> the "multimedia" overlay. More details here: >> >> http://forums.gentoo.org/viewtopic-t-789673.html > > I really don't think it's a CPU issue. What other factors could be at > play? Could it be my nouveau video drivers? > > - Grant > Regarding mplayer: There is another ebuild in the multimedia-overlay that I prefer now to mplayer(-mt) and that also uses ffmpeg-mt : media-video/mplayer-uau.
It fetches the mplayer-version from one of the mplayer-devs and creates a binary called "mplayer-uau" which can be installed at the same time as the official mplayer package. Regarding your frame drops: it is highly likely that sound is the problem. Please try playing the video with "-ao null" to see if that's the case. I assume you use pulseaudio? Check if it has real time capabilities (kill it, start it with verbose/debug in foreground, read log). Also try "-ao alsa" and "-ao oss". Your data-source (gard disk, network?) is fast enough? Copy 1GB into RAM to be sure by ether using RAM-disk or cache-settings. Try nvidia-binary. You'll get VDPAU in that case, which will result in about 5% CPU usage when decoding h264! Hope some of this helps... Daniel -- PGP key @ http://pgpkeys.pca.dfn.de/pks/lookup?search=0xBB9D4887&op=get # gpg --recv-keys --keyserver hkp://subkeys.pgp.net 0xBB9D4887
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