"Stella-Terra Clemens" <stellaterraclemens@gmail.com> wrote:
> First off: what is the best codec to use on a slow system given DVD
> input for consistantly smooth playback and as good a picture quality
> as I can get?
MPlayer's MPEG-1/2/4 decoding is quite fast.
> I tried h264, but that turned out to be way too slow (or was I using
> it wrong?)
Try a small frameref, no b-frames, no cabac, no deblocking,
partitions=none, and perhaps a low level_idc. With some tweaking, you
might be able get it to play smoothly.
> I've been messing a lot with the resolution and the bitrate, but that
> doesn't seem to have much effect?
Those are indeed the two most significant factors, besides codec
selection.
> Does the container matter much?
Only seeks on your drive are expensive (ie. slow). Otherwise, no.
> My instinct is to always crop as little as possible and then resize to
> mod16, but I've recently been reading that it's a bad idea to resize
> at all.
Resizing is generally a lossy operation (and when it isn't, it looks
terrible), and I find that the aliasing (with most of the available
scalers) reduces compressibility. I prefer to slightly over-crop.
Still, I will say that some scalers aren't bad, and the blur you get
from a few of them might incidentally improve compressibility.
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