If you need some more testers, I've already got a Pi 2 to do it.
By the way, would it be possible to allow DCP-o-Matic find encoding servers outside its own LAN?
With servers like Pi2 powered with a few watts, this would allow us to settle some kind of worldwide distributed encoding farm.
De: "Carl Hetherington via DCPomatic" <dcpomatic@carlh.net>
À: "carlh net dcpomatic" <DCPomatic@carlh.net>
Envoyé: Mercredi 6 Mai 2015 17:53:12
Objet: Re: [DCP-o-matic] dcpomatic on Raspberry Pi / Raspian
On Wed, 6 May 2015, Carsten Kurz via DCPomatic wrote:
>
> Am 06.05.2015 um 13:42 schrieb Jim Dummett via DCPomatic:
>
> >
> > Carsten - seems like a good idea to test it on 1 PI before buying a job lot. But if performance does turn out to be economical, I'd be very happy to buy a few of your test PIs from you. But at the moment it does look too good to be true!
>
> I received my model 2B yesterday, I would be happy to test it with
> different material to see wether it's a viable option. I'm not fit to
> compile it myself, though, so I need a working image.
I'll look into this at some point. I tried doing it with qemu and a
chroot but ran into problems. I'll see if it's any easier to run qemu
with a full Raspbian image.
> > Does anyone have any guess as to how long it's likely to be before an
> > open source GPU-accelerated JPEG2000 encoder comes to fruition? That
> > would probably render this approach obsolete anyway...
It's difficult to say. I'm tinkering a bit with the Poznan JPEG2000
encoder:
http://apps.man.poznan.pl/trac/jpeg2k
which is CUDA (nvidia). It remains to be seen how easy it is to make it
do cinema-standard encoding. I am no expert on JPEG2000 nor CUDA, so it
may take me a while.
There is also an effort to accelerate OpenJPEG using OpenCL (I think).
That would be great as it would be much easier to integrate into
DCP-o-matic.
Regards,
Carl
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