Hello, > > 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.
The full size track is a MPEG2 file with AC3 Audio. The other one is some quicktime file from the Internet. > 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. OpenGL also helps with playback but if enabled neither real-time effects nor transitions are shown. I wonder what's the cause for that. Of course I don't intend to use Cinelerra as some media player. :) But I wonder if I will be able to do any serious work with it if even a single PAL track is so resource demanding. >From other NLE video software I'm used to if the system can't do the processing in real-time it'll render low-res preview files before giving a preview. Ulead's MediaStudio is even as clever as to only rerender the changed parts. I wonder if there's a similar feature in Cinelerra. Yours sincerely, Dennis Schulmeister -- Dennis Schulmeister - Schliffkopfweg 12 - 76189 Karlsruhe - Germany Tel: 0721/5978883 - Fax: 0721/5705992 - [EMAIL PROTECTED] http://www.windows3.de - http://www.denchris.de http://www.audiominds.com - http://www.motagator.net/bands/65 _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
