[MPlayer-dev-eng] Re: -of mpeg

D Richard Felker III dalias at aerifal.cx
Tue Oct 21 15:46:41 CEST 2003


On Tue, Oct 21, 2003 at 01:15:50PM +0200, Michael Niedermayer wrote:
> Hi
> 
> On Saturday 18 October 2003 00:53, D Richard Felker III wrote:
> [...]
> > I'm curious...is there any way to encode duplicate frames in mpeg
> > output? 
> mpeg2 standard:
> ----
> If  progressive_sequence  is  equal  to  '1',  this  flag,   combined   with
> repeat_first_field, indicates  how  many  times  (one,  two  or  three)  the
> reconstructed frame is output by the decoding process.
> ----
> 
> so yes, if the video is progresive then we can duplicate frames

You can only lengthen frames by 50% (3 field duration) which doesn't
seem very useful except for correcting minor a/v sync issues.

Rich



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