[MEncoder-users] Quicktime compatible - with ability to seek to next and previous frame quickly

[RC]

On Thu, 01 Nov 2007 09:29:59 -0400
Nicolas Hesler <nicolas.hesler at sheridanc.on.ca> wrote:

> Quicktime allows you to frame advance and frame rewind  because of
> more frequent keyframes, 

"advanced" has nothing to do with it.  keyint only matters for "rewind"

> but is anyone aware of the threshold  or the minimum interval that one
> has to place keyframes to be able to  advance and rewind single frame?

It's a completely linear trade-off.  Half as many keyframes, and it'll
take twice as long to seek backwards.  You just have to pick the balance
that you like. 

If you're editing videos, keyint=1 is preferable, but files will be
huge, and higgly unadvisable for distribution.  If you need to seek
backwards all the time, maybe 15 (or 30) would be a good trade-off.  If
you only occasionally need it, or don't think those you distribute the
video to will need it, you should really go for a large value, like
300, and just put up with the occasionally slow seeking.