[MEncoder-users] Encoding with an EDL

[Olivier Rolland]

On 6/1/07, Olivier Rolland <billl at users.sf.net> wrote:
> Hi,
>
> I'm trying to encode 1 second of a movie every 20 seconds. This movie
> having a length of 8000 seconds, here a sample of the EDL file I've
> defined:
>
> 1 20 0
> 21 40 0
> 41 60 0
> ...
> 7981 8000
>
> I expect the result to have a length of roughly 400 seconds (5% of
> 8000 seconds). However, none of the tests I've made gave me that
> length. The result is either shorter when I use -hr-edl-seek (210
> seconds) or much larger (4000 seconds) without -hr-edl-seek.

I've investigated some more: I've logged and analyzed the output of
mencoder and here is what I've found:

EDL SKIP: Start: 3661.00  End: 3680.00   Current: V: 3667.45  A: 0.00
EDL SKIP: Start: 3661.00  End: 3680.00   Current: V: 3667.49  A: 0.00
EDL SKIP: Start: 3661.00  End: 3680.00   Current: V: 3667.53  A: 0.00
EDL SKIP: Start: 3661.00  End: 3680.00   Current: V: 3667.57  A: 0.00
EDL SKIP: Start: 3661.00  End: 3680.00   Current: V: 0.19  A: 0.00
EDL SKIP: Start: 3661.00  End: 3680.00   Current: V: 0.23  A: 0.00
EDL SKIP: Start: 3661.00  End: 3680.00   Current: V: 0.27  A: 0.00
EDL SKIP: Start: 3661.00  End: 3680.00   Current: V: 0.31  A: 0.00

The time counter is reinitialized at some point. I've made a few tests
and it never worked as expected with DVD-9 but it did with DVD-5.

Can this be related to dual-layer discs ?

Regards,

Olivier