On Thu, May 10, 2018 at 10:48:59PM +0200, Tomas Härdin wrote: > tis 2018-05-08 klockan 18:26 +0200 skrev Michael Niedermayer: > > On Tue, May 08, 2018 at 12:40:49PM +0200, Tomas Härdin wrote: > > > mån 2018-05-07 klockan 12:38 +0200 skrev Michael Niedermayer: > > > > > Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > > > > > > > > + if (sc->interlaced) { > > > > + //Display F2 Offset > > > > + mxf_write_local_tag(pb, 4, 0x3217); > > > > + avio_wb32(pb, -((st->codecpar->height - > > > > display_height)&1)); > > > > > > Negative values for DisplayF2Offset are not valid > > > > The specification (SMPTE 377-1-2009) says: > > > > The DisplayF2Offset Property adjusts the DisplayYOffset for the > > second field relative to that for the first field. Its > > value shall be zero (0) or minus 1. A value of minus 1 shall invert > > the Displayed Topness relative to the Sampled > > Topness. > > Huh, the document I have is from 2004, which says "If the property is > not present, its value shall be assumed to be 0. Valid values are zero > or 1.". So I guess they changed that. I guess it's fine then.
will apply thanks [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Awnsering whenever a program halts or runs forever is On a turing machine, in general impossible (turings halting problem). On any real computer, always possible as a real computer has a finite number of states N, and will either halt in less than N cycles or never halt.
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