>> > Computer hardware usually cannot provide 50.000Hz, 59.940Hz or >> > 23.976Hz outputs to your TV/Monitor. This will cause some judder on >> > display output as MPEG/AVC input-stream is not synchronized to output framerate. > >> do you mean that all nvidia vdpau cards with existing drivers from >> Nvidia can't provide exact 50.000Hz, 59.940Hz or 23.976Hz ?? > There is no graphics card, BD/DVD player or other standalone device that outputs > those rates exactly. I don't know how much they deviate, but I'd guess it's usually > something like 0.01 % (50.005 Hz instead of 50 Hz), as Jori said. If you can find a modeline what your output is currently using you can use online services to check framerates it provides. You can use this link "Or give Xfree86 modeline to import"-option http://www.epanorama.net/faq/vga2rgb/calc.html For example Xorg server with log verbosity > 6 will print modes the X-server is validating. But I am not sure (too busy to check and remove from my VDR) if it writes actual modelines out. ** These framerate/synch issues are so complicated (and uninteresting to most) that we can just made a conclusion that video/audio should be properly synched, otherwise a quality declarating will occour. With VDR's FF card I have never seen such problems. But with softdevice based outputs I can see a lot of them. The video does not seem to be as smooth as on dedicated players (BD, popcorn hour etc). It does not help using direct Toslink-output from VDR which mostly prohibits resampling of audio. And why would you like to have audio decompressed, speeded up 1% and then recompressed. Just to avoid your output software to duplicate or drop frames. Synch perfectly..
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