On Tue, 03 Jun 2003, Daniel Pittman wrote:
> On Mon, 2 Jun 2003, Steven M. Schultz wrote:
>>> From: Daniel Pittman <[EMAIL PROTECTED]>
>>>
>>> I have been using mpeg2enc from the current CVS tree together with
>>> transcode to encode DVD compliant MPEG-2 data from PAL DV input.
>
> [...]
>
>>> The one big problem that I do have with the toolset is that I get
>>> ghosting in very dark scenes, to the point of making some stuff
>>> *very* uncomfortable to watch -- like seeing it through a heavy, dark
>>> fog or something.
[...]
>> Hmmm, what about trying a little less agressive -N option? Perhaps 1.0
>> or 0.8 would help (but not increasing the high frequency quantizers as
>> much).
[...]
> I can see how this might make a significant difference. I will hunt
> through my current set of DV sources and see if I can find a sample that
> has this issue. Sadly, I only watched 'Baby Cart in Hades' after I
> deleted the raw DV; it shows this really, er, well.
Right, I had a play around with the footage I do have in hand in DV
format and couldn't reproduce the problem even when I tried very hard to
make it generate artifacts; it stayed good, if blocky, even at stupid
bitrates.
So, either this is some sort of noise effect in the source as was
suggested, and so specific to the source, or I need darker material to
play with.
I will keep an eye on my videos and see if I can catch it in the act
again, and post here if I work out the cause or fix.
Daniel
--
You know you'll always be drifting
You know you'll never be found
A servant, so empty, you'll never make a sound
-- Switchblade Symphony, _Naked Birthday_
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