[MEncoder-users] Encodes for slow laptop

[RC]

On Mon, 9 Jun 2008 02:13:21 -0500 (CDT)
"R.L. Horn" <lists at eastcheap.org> wrote:

> Some popular (and sometimes mandated) frame dimensions just aren't 
> divisible by 16 

I haven't ever seen any.  Pretty much every digital video expert knows
not to do such a stupid thing.  I don't doubt there are websites and
perhaps products from small companies that might be so stupid.

> (perhaps most notably, 1080/16 = 67.5).  

We call it "1080" for various reasons (eg. aspect ratio), but it's
actually encoded, broadcast, and decoded as 1088... precisely because
1080 isn't divisible by 32.

> Many more aren't  divisible by 32 though, happily, both 480 and 576
> are. 

Any standard designed for interlaced video should be (and all are,
AFAIK).  You'll note that 480 and 576 don't exactly correspond to the
real dimentions of analog PAL/NTSC.  They were specified as-is precisely
because they are mod32.