Hi -
> From: [EMAIL PROTECTED]
> I never noticed before, but on a high-motion scene played back on the
> TV the slow-motion effect was very prominent.
Interesting. I guess I could take ~10 hours and redo the one movie
that I did yesterday to see if I can spot the difference.
> And what I meant to say was, not using -I for interlaced inputs
> doesn't save (m)any bits versus using -I. In all my tests
> yuvmedianfilter (used correctly or not) saves a lot more bits than
> yuvdenoise. Direct comparison shows why - yuvmedianfilter really
AH, ok. That makes a lot more sense.
> softens the picture a lot. Median filtering in general is great for
> noise distributions with long tails (non-gaussian, impulsive noise)
> since it can exclude large outliers rather than averaging them in like
> linear filtering, but the flip-side seems to be that edge detail gets
> obliterated. There are lots of different median-filtering schemes out
It does soften it of course but I guess "a lot" is subjective. Seemed
strange though that the documentation mentions 'sharpening' as a side
effect. If I use the medianfilter then I leave out the -N to mpeg2enc
and the resulting DVDs usually end up around 4500 to 5000 kbits/sec
(right where I want it). The effect of the medianfilter is quite
pleasing, seems that many of the captures I do look a bit
'sharp/harsh' and filtering improves the appearance (that's
subjective of course). As you mention it works great for 'impulse'
noise - such as movies that have spots/speckles.
Sounds like an interesting area of research but alas it's not my
area of expertise either.
Cheers,
Steven Schultz
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