[MPlayer-users] Confusion in man and encoding.html about -aspect in lavc opts

Pere Castañer XaRz69 at terra.es
Thu May 8 13:03:42 CEST 2003

Well I've found a confusion in the lavc opts in the man documentation.


aspect=<x/y>        Store movie aspect internally, just  like
                    MPEG  files.   Much  nicer  solution than
                    rescaling,  because  quality  isn't   de-
                    creased.   Only  MPlayer  will play these
                    files correctly, other players will  dis-
                    play  them with wrong aspect.  The aspect
                    parameter can be given as a  ratio  or  a
                    floating point number.  
                    aspect=16/9, aspect=1.78
This number is a decimal number, and its slightly different that 1,78
in mplayer command line 1,78 is not equal at 1.78 and when doing:

mencoder -v -dvd 1  -ovc lavc -lavcopts vcodec=mpeg4:aspect=2.35:vbitrate=1340:.....
this command line don't works, but:

mencoder -v -dvd 1  -ovc lavc -lavcopts vcodec=mpeg4:aspect=2,35:vbitrate=1340:.....
works fine. 

In the DOCS dir in encoding.html  there is a final text explaining the :aspect=16.0/9.0 again, and it must be :aspect=16/9 or :aspect=16,0/9,0 for lavc opts internals.

Perhaps is obvious for all, but for a newbie like me, confused a lot when trying to assimilate all contents of the mencoder theory....

Thanks very much for your attention.
"The Wheel of Time turns, and Ages come and pass, leaving memories
that become legends. Legend fades to myth, and even myth is long 
forgotten when the Age that gave it birth comes again. In one Age,
called Third Age by some, an Age yet to come,an Age long past, 
wind rose in the Rhannon Hills. the wind was not the beginning. 
There are neither beginnings nor endings to turning of the Wheel 
of Time...But it was a beginning."
					  	   Robert Jordan 
					  Wheel of Time(book 10)
					  Crossroads of twilight
Pere Castañer Sardà - http://xarz.no-ip.org
GnuPG Public key available - http://xarz.no-ip.org/keys.html
Computer Science Student on UOC - http://www.uoc.edu
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