[MEncoder-users] 2pass: auto-calculation of bitrate?

[RC]

On Sat, 13 Oct 2007 04:12:45 +0000 (UTC)
Ilya Zakharevich <nospam-abuse at ilyaz.org> wrote:

> D) And now the last logical step: If of these 99 remaining videos 40%
>    is "action-like", 40% is "arthouse-like", and 20% is animation,
>    then law of big numbers starts to be applicable.  Essentially, I
>    won't need to have summaries of the particular videos; I could feed
>    in 40 copies of "average action-like summary", 40 copies of
>    "average arthouse-like summary", and 20 copies of "average
>    animation summary".

This is certainly not workable.  There is no average "action" movie.  In
fact, trying to classify the visual complexity of movies by loosely
defined genres is a good sign you don't understand what you're doing.  

There will be movies that are ridiculously easy to compression, and
there will be some that are incredibly difficult to compress.  A huge
number of factors will determine this, and genre is really the most
minor one of them, and won't help you at all.  The brand of film, type
of camera, etc., will be much greater factors.