[MEncoder-users] -VF FIELD=0 and BFRAMES=3 problem

Nicolas George nicolas.george at normalesup.org
Thu Nov 3 09:48:32 CET 2011


Le tridi 13 brumaire, an CCXX, Bill Crockett a écrit :
> I decided to experiment with the deinterlace method of extracting
> and encoding only one of the two fields using -VF FIELD=0.Being PAL
> format, I halved the vertical resolution from 720x576 to 720x288
> using crop and scale appropriately.The -ovc I use is x264 and with
> my options setting this has BFRAMES=3.All this worked well produced
> a progressive, 25 fps file and plays well in MPlayer.
> 
> However, when playing the video in other players, the video flickers
> and jerks as though frames are missing.After much experimenting and
> trying different encoding options, I stumbled upon BFRAMES being the
> problem.reducing BFRAMES=0 fixed it.All players now can play it
> properly.
> 
> Using MPLayer, I looked hard but could not see any difference having
> BFRAMES=3 or BFRAMES=0.Are they really necessary or is this an
> MEncoder only problem?

Please show us your complete command line and the complete output it
produced (without silencing options).

Regards,

-- 
  Nicolas George
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