[MEncoder-users] x264 questions

Reimar Döffinger Reimar.Doeffinger at stud.uni-karlsruhe.de
Tue Nov 6 09:14:32 CET 2007


Hello,
On Mon, Nov 05, 2007 at 10:22:28PM -0500, Rich Felker wrote:
> On Mon, Nov 05, 2007 at 08:37:32PM -0600, James Hastings-Trew wrote:
> > Two separate questions regarding x264 encoding in mencoder:
> > 
> > 1) does setting frameref to something other than 1 make a difference if 
> > there are no bframes? I've read the relevant section in the manuals and 
> > am still unclear.
> > 
> > 2) This message has been a very long standing feature of Mencoder:
> > > ** MUXER_LAVF 
> > > *****************************************************************
> > > REMEMBER: MEncoder's libavformat muxing is presently broken and can 
> > > generate
> > > INCORRECT files in the presence of B frames. Moreover, due to bugs MPlayer
> > > will play these INCORRECT files as if nothing were wrong!
> > > *******************************************************************************
> > Is this going to be resolved? - i.e. will Mencoder ever be able to mux 
> > to an .mp4 container with a video stream that contains b-frames?
> 
> Basically no one is working on mencoder and it's so broken that few of
> us are interested in it unless it's greatly overhauled. I would
> recommend just using it to do the video stream if you need the
> powerful filtering it provides, then using the ffmpeg program for the
> muxing and anything else.

Regardless of this, are you sure the message above still applies? At
least the i_certify_... option was removed so I assumed it was at least
mostly fixed.

Greetings,
Reimar Döffinger



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