Re: Private film premiere in an IMAX
Posted: Sun Nov 29, 2020 6:43 pm
HDMI Aux shows run out of both projectors, up to 4k 24fps. Its really picky on what sources work and when it does it messes with the gamma. Technically it could be possible to run dual projector for non-IMAX DCPs, but it would be very unlikely. When you put together a show playlist, there are the automation cues you can manually add, but there are ones that are automatically added we don't have macros for. So if you could get a macro built for IMAX_LF shows then that would work. But IMAX has a stronghold on that and I highly doubt they'd add one for you. We had to fight them for a long time and have people email QCO to get them to make us a -5db cue for trailers.scorpio81 wrote: ↑Sun Nov 29, 2020 8:03 am Hi! I'd like to add some hopefully useful info to this topic.
I think it's best to create full container DCP with an image filling it completely. IMAX has no problem projecting these DCPs.
I had problems projecting encrypted 4K DCP, no matter what I did. But no problems with encrypted 2K or unencrypted 4K. So if you want encryption then make a short test DCP first.
I spoke once to an IMAX service technician and technically it is possible to project non-IMAX content with two projectors but he never revealed me how to do it. I guess it's something to do with an Image Enhancer settings.
The title card saying "This Is Not The IMAX Experience" is displayed only for FTR DCP longer than 30 minutes (if I remember it correctly from IMAX manuals). So it is possible to create, say, TST DCP to avoid this card. But I never did it myself so it's better to try.
I'll try the 30 minute test DCP, I don't think I've ever made anything over 30 minutes that I didn't mark as a feature. I can't test encryption though, IMAX won't give us our certs. But I can say without a doubt that at least on our Dual Laser GT that unencrypted high bitrate 4k runs perfectly.
Pro tip: if you do run your film in IMAX, make sure you start with 2 seconds of black. If you don't your picture will either start late or flicker 90% of the time for the first couple seconds.