[mythtv-users] is it really 29.97 fps or 24 fps?

Kevin Ross kevin at familyross.net
Fri Sep 3 18:31:25 UTC 2010


  On 09/02/2010 07:55 PM, Brian J. Murrell wrote:
> When I play a recording of a given television show (a drama, so filmed
> on real film, not video tape) recorded from clearqam with mplayer, it
> says about it:
>
> VIDEO:  MPEG2  720x480  (aspect 2)  29.970 fps  15000.0 kbps (1875.0 kbyte/s)
> [V] filefmt:29  fourcc:0x10000002  size:720x480  fps:29.970  ftime:=0.0334
>
> Yet if I step through it a frame at a time with `.' I can see quite
> clearly that it's (a) not interlaced but progressive and (b) that there
> are 24 frames in every second played.
>
> So that seems to make it quite obvious that the MPEG that my cableco
> sends is the original 24fps progressive frames from film.  I guess the
> expectation is that whatever is displaying that to a CRT TV will
> telecine it.  But I digress.

It's already been telecined long before it gets to your house.  Long 
before it gets to the cable company, even.


More information about the mythtv-users mailing list