On Thu, 16 Jun 2005, Jean Connelly wrote:
> Isn't the point of inverse-telecine 'ing to end up with a stream that
> has the smoothest playback on the largest number of devices?
> Including devices that are capable of 24fps playback?
Hmmm, it'll look smoother on a computer display. For TV viewing
unless you have a progressive scan TV set then you'll still be
viewing ~30fps interlaced.
> And, isn't the size difference just a nice confirmation that a ~30 fps
> telecined stream has approximately the same information content as the
> 24fps original stream?
It is nice to know that yuvkineco is doing a good job of removing
the duplicate fields - that's true.
But it still doesn't give me a good feeling for why encoding those
duplicates (which fields from different frames) doesn't take more space.
When doing a analog->digital capture you're actually getting the
duplicated/mismatched field since the capture process doesn't know
the data originated from film. To the capture/encoding process you've
got 30fps (that could just as well be from video tape) to encode.
Dropping 20% of those should, I thought, give more than a 1% difference
in final file size.
I'll take another look on the next tape - perhaps it's data source
dependent and different tapes will come out differently.
Oh well, it's off to try and resolve
https://sourceforge.net/tracker/index.php?func=detail&aid=1215231&group_id=5776&atid=105776
one and for all. Seems PPC building on Fedora is having problems
(not sure what Redhat did to gcc4 to cause the problems - gcc4 on
OSX doesn't have the issues).
Cheers,
Steven Schultz
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