[MPlayer-dev-eng] -lameopts: conflicting documentation and code?
Diego Biurrun
diego at biurrun.de
Thu Feb 19 05:37:57 CET 2004
Charles Wilcox writes:
> The man page and HTML documentation say that they q= value can be set from
> 0 to 9, the equivalent of the same option of Lame. However, this is not
> the case of what happens. mencoder.c:986 has a line that adds one onto
> the value specified before it is sent off to libmp3lame. This is
> complicated by the fact that cfg-mencoder.h:25 says that the input is
> indeed in the 0 to 9 range. Also, the code makes no effort to check to
> see if the resulting value is 10, which is an incorrect value to pass on.
>
> Considering all the docs imply this option should match up to what LAME
> would normally take, could this possibly be a error in the code? Taking a
> cursory glance at the lame code in frontend/parse.c:1626, it does not alter
> the value before it calls lame_set_VBR_q.
>
> Sorry, I'm just learning how to use Mencoder, but I've used Lame
> extensively, and this inconsistency confuses me. Is there a reason it it
> like this? If so, there is no warning to those who'd assume that the VBR
> quality numbers mean the same thing. (That, and it just doesn't make any
> sense to me.) If this is a mistake... wow, I guess not many people
> specify -lameopts to have caught this.
Sounds like you found a real bug, could you come up with a patch that
fixes it, please?
Thanks
Diego
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