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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