[Dan Smith]

Hi Chris
This helped me a lot – thanks mate!

Dan

[Dan Smith]

thanks Tim

by ‘preview setting’ i mean the video previews setting of the timeline. it seems to be at 1080p, just seems odd that premiere would assume this resolution given i told it my footage is 4k. maybe its the closest match to my desktop resolution which is 1920×1200?

I my footage is 30fps from a 25fps base. we shot this for aesthetic reasons. maybe premiere is confused by my selecting 4k25, when my footage is playing back at 30?

thanks for your help

Dan

[Dan Smith]

Thanks Eric
It all seems to work ok I think our mac is just too old – I hear what you are saying about latency.

I thought that the red card would give me realtime previewing in premiere, but as you say this is not the case. I hope its not a silly question, but why do you think the card is limited to only encoding/decoding in premiere? it seems a shame to have realitime playback in cinex but not in the edit space using the same footage. it guess its because premiere doesn’t run from the rocket its processing isnt in redcode its in cuda or open_cl? – hence what you were saying about latency comes into effect?

thanks for your help anyway

Best

Dan

[Dan Smith]

Thanks Peter

This has made our edit work so that is great. Thanks! It appears once you change the source for one clip it does it for the whole lot.. does that make sense to you?

I have to say the card doesn’t do as much for us as i’d hoped… it has allowed me to run at between 1/4 and 1/8 as opposed to 1/16 (with the occasional underrun) this could be my machine. please can you advise me on the settings i should use if possible?

I have a 2008
Mac Pro with mountain lion
nvidia geforce gtx 660ti (2gb ram)
hd decklink by blackmagic (4x lane) sdi output to jvc 24inch grade 2 monitor
Red rocket (x16 lane)
all hard disks are SSD
premiere cc

its possible that my internal bus speeds of my old mac are throttling me back.

i am using a red sequence at 4k. preview set to 1080p (should it be iframe or quicktime?)

we monitor through the gtx card’s 3rd dvi output or the decklink’s SDI. playback appears to be similar but slightly sharper on the deckling (adobe playback gives a deinterlaced look – probably becuase its using the system refresh rate) obviously the adobe preview has more resolution options than the blackmagic which will only allow 1/2 or 1/4

it seems odd that both solutions work,

which should i be using? is it possible to be using adobe preview to monitor whilst utilising the red rocket and CUDA engines? or even red rocket and CUDA AND the DECKLINK. seems unlikely!

my frame drop indicator is constantly green even though I am obviously dropoing frames!

two specific questions – should i able to monitor SDI from the red rocket?
why does premiere ask me to change my settings when i drag my 4k r3d onto the timeline? i.e i have a r3d timeline and when i drag my footage down (which i have imported using the correct process) onto the sequence it tells me the footage is different would i like to change if i say yes when i check the settings the codec is greyed out and labelled ‘custom’ not r3d as i would expect.

the preview setting seems to always be 1080p regardless of the fact that i am using 4k rushes.

Thanks for your help
I would love to get this sorted once and for all

best

Dan

[Dan Smith]

slightly harsh, but thanks anyway!

[Dan Smith]

cool. thanks.

[Dan Smith]

ok, thanks.

Is the case then, that h264 is the best mastering codec and i have been misguidedly using prores to archive all of our masters on needlessly large storage devices?

is it possible to move between h264 and prores back and forth without loosing quality? Is h264 then, a lossless codec spec, I thought not?

As I understood, we transcode our canon h264s to prores for editing and grading, but to transfer them back to h264 (i.e for a master) would result in a loss of data thereafter?

or Is there a better solution to my issue and havn’t asked the right question?

thanks!

Dan

[Dan Smith]

I think that Adobe changed the render engine and the AA settings no longer applied. I just applied draft raytracing (rather than the default ‘interactive’ setting) and then refreshed my model in AE. Its SLOW as anything, but it looks much better.
d

[Dan Smith]

Hi

We had issues where by green flashes would appear on our canvas and external monitor (hdmi from blackmagic decklink hd).

ran lots of tests and found that the following cleared up the issues entirely:

unistalled FCP entirely using digital rebellion fcp remover application.
installed latest blackmagic drivers
switched our render scratch disk to the fibrechannel RAID attached to our server (over GigE smalltree ethernet); as a result the files can be written at 108MB/s rather than 55MB/s, the point I am trying to make here is that conventional internal hard disks are relatively slow when compared to fast network storage – i had overlooked this until i did some random speed tests with the black magic disk speed util! Turned out my harddisk was slowing me down when it came to rendered files.

anyway. it might work for anyone who is looking.

best

Dan

[Dan Smith]

Thanks guys. We just re-encoded and it was fine. I think its just a random, unlikely occurance.
Might just use standard pro-res and see if I get the same 1/5000 glitch.

Best

Dan