[MPlayer-users] Doubling frame rate

[Ivan Kalvachev]

D Richard Felker III said:
> On Wed, Jun 02, 2004 at 10:12:22PM -0400, Jason Tackaberry wrote:
>> > which is really 60fps but just stupidly stored as 30fps.
>>
>> I think given an interlaced signal like NTSC it's not stupid to store it
>> as 30fps interlaced.  Why do you say it's stupid?
>
> Well it's stupid to treat two fields (which don't belong together) as
> one frame. Unless you use 4:2:2 or 4:4:4 mode (which is never used in
> practice) the chroma from the two fields will bleed together and make
> nasty artifacts. And worst of all, treating field pairs as frames is
> _really_ confusing to users who don't understand interlaced video.
>
> Rich
Why don't you look at MPEG-2 specification to see how to treath
interlased chroma samples in interleased picture?
Of course they also jump over one line, giving very interesting
pattern to follow.

Wish You Best
  Ivan Kalvachev
 iive