[MPlayer-users] Converting DivX4 -> MPEG ?

[Tuukka Toivonen]

On Thu, 30 Oct 2003, D Richard Felker III wrote:

>> >your source (generally twice that of the number of analog "lines" your
>> >capture standard uses). Unfortunately they all give huge files. But you
>> No, the same number of lines. Nyquist frequency corresponds to half of
>"Lines" doesn't mean scan lines. Read the literature. The meaning is
>the maximum number of lines that can be displayed on the screen

OK, so "lines" is actually a synonym for "resolution", ie. "horizontal
lines" and "horizontal resolution" means the same thing, right?

The problem is that one might think that to mean either "number of
horizontal lines" or "horizontal number of lines" so it's really ambigious.

>resolution, not vertical, since vertical resolution is very discrete
>and has nothing to do with sampling theory.

Or in other words, analog TV has already sampled the vertical space.

>> >With camcorder (moderately noisy) sources however, I prefer sometimes
>> >MPEG-2 to the less blocky MPEG-4 but where blocks tend often to "stick"
>Also try mpeg_quant option to lavc.

Thanks, will do next time when I want low bitrate. (Might it help also
with high bitrate?).