On 2007-04-27 22:10, Dennis Schulmeister wrote: > Hi, > > Like I told in my first message I'm trying to run Cinelerra 2.1CV on a 2 > GHz, 1GiB RAM IA-32 AthlonXP Machine on Ubuntu 7.04 real-time. > > Now I wanted to ask for general opinion what performance I can expect. > Although there are working binary drivers with proper OpenGL support for > my NVIDIA card installed Cinelerra performs quite poor. > > While using the OpenGL output driver helps a little bit it introduces > its very own problems. It will playback video but without any applied > real-time effect and without any transition. Note that this driver also > has video problems say with GStreamer applications. > > So I'm falling back to X11-XV output which will show effects and > transitions but with even poorer performance. > > Generally speaking this is what I get: > > * Playback of one half size PAL video track with mono sound: > ~50% / ~60% CPU utilization. > * Playback of a full size PAL video track with stereo sound: > ~90% / 100% CPU utilization.
That's not unreasonable for a 2GHz cpu, depending on the codec. What codec is your input video using? I've never found cinelerra to be the fastest viewer. It's strength is in editing and rendering the result. > > We're talking about playback of a single dry video track with one or two > dry audio tracks. No effects, nothing. When using the OpenGL driver you > could subtract about 10%. > OpenGL only helps with effects display (and possibly frame resize, but I haven't heard that officially.) If you already see slow performance, I'd run without OpenGL unless you are trying to view an effect that OpenGL supports. I might turn it on just to test if viewing the segment was faster with OpenGL though. -- Kevin _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
