[MPlayer-users] Forcing other framerates

[meino.cramer at gmx.de]

"Ing. Daniel Rozsnyó" <daniel at rozsnyo.com> [10-04-26 17:21]:
> meino.cramer at gmx.de wrote:
> >RC <cooleyr at gmail.com> [10-04-25 20:00]:
> >>On Sat, 24 Apr 2010 16:32:40 +0200
> >>meino.cramer at gmx.de wrote:
> >>
> >>> I bought a new LCD monitor with 60Hz framerate.
> >>> When playing videos sometimes I git a distortet
> >>> screen (not only with mplayer!!!). I think, it
> >>> is because the video plays at 50Hz framerate
> >>> which then interferes with the 60Hz refresh rate
> >>> of the monitor.
> >>LCDs effectively do not have a refresh rate (or a "framerate").  
> 
> LCD has a refresh rate! It refreshes the picture from top to bottom, 
> just the "memory effect" of the screen is much bigger than on CRT. The 
> LCD is effectively a visible dynamic memory (DRAM).

  That means...?
  Displaying Image contents with a rate of 25Hz to a technology
  drawing every 1/60 second a picture...gives...?

> 
> >>You've not described what this "distortet screen" problem is, so 
> >>nobody
> >>can possibly help.
> >>
> >>
> >>-- 
> >>Ha. I'm the idiot.
> >>_______________________________________________
> >>MPlayer-users mailing list
> >>MPlayer-users at mplayerhq.hu
> >>https://lists.mplayerhq.hu/mailman/listinfo/mplayer-users
> >>
> >If LCDs have no framerate or refresh rate, they will not draw
> >frames from top to bottom? How then?
> >A try for a better explanation:
> >Certain videos (for example the Neo<->Smith fight sceen in Matrix
> >Revoluitions) with fast changing lightning conditions expose some
> >screen distortions.
> >They are of two kind:
> >The upper half of the screen is still in "bright condition"
> >when the lower half is in "dark condition" -- what comes first and 
> >where this "break" is, depends. Also varying is the position
> >of this "break" on the screen.
> 
> That is a missing vertical synchronization - what -vo are you using? On 
> what video card and which drivers? Usually on dualhead the vsync is 
> hard to get..

  Oh, oh...some mails ago I got a hint to disable all VSYNCs in the
  nvidia settings...

  So...using -vo xv gives me the fastest (read: normal speed) video
  with audio and video in sync. 
  Other drivers result in the message that my two core 3800+ AMD
  CPU is to slow....(?)
  My graühics card is ai
  nVidia Corporation G73 [GeForce 7600 GT] (rev a2) which run with
  the current nvidia drivers on a Linux box.
  I myself and my computer each uses only one head ;)
  Most of the time I use my own... ;) ;)
  I disabled AutoTwinDevice in the Xorg.conf as I did with
  TwindDevice (dont remember the correct names of that parameters, but
  was something like that.).

  Since 60Hz is common for LCD I am asking myself, whether I am the
  only one having problems with playing 25Hz/region 2 contents...?!

  Since it also happens for example with the fight scene Neo<->Agent
  Smith in Matrix Revolutions (DVD, region 2) I think, it is not
  a bug in the video itsself....

  I am a little (read: very) frustrated, since this monitor is new
  and I like its colors and features, but...

  So any help to circumvent this problem is *very* appreciated! :O)

  Have a flicker-free evening! :O))
  Best regards,
  mcc


> Daniel
> 
> 
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