[opendtv] Re: France bids farewell to SECAM

  • From: Mark Schubin <tvmark@xxxxxxxxxxxxx>
  • To: opendtv@xxxxxxxxxxxxx
  • Date: Tue, 06 Dec 2011 17:21:40 -0500

In other words, why bother? You could use PAL equipment for production and then transcode for transmission.


TTFN,
Mark


On 12/6/2011 4:49 PM, Olivier Houot wrote:
I've discussed on a french forum with someone that worked in this
domain.

He mentionned Thomson  TTV 5000, 5600,5620 series as devices that could
be used to work with SECAM encoding at the camera (and had this AM bus
for mixing).

However he says this generally involved some loss of resolution during a
cross fade.

Also, in case of R-Y/B-Y phase mismatch when joining sequences, if you
did not take adequate precautions (pre-roll) you could end up with a
defect known as the "pink panther" (16 to 32  colored lines at the top
of the picture).

For recording, 2 inch Ampex quadruplex as well as the first 1 inch
devices could record the signal without modification.

3/4 inch BVU800 series or 1 inch BVH2000 would use some form of
transposition.

Not ideal, then, but possible.





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