IO Express HDMI out not working properly

[Jeremy Garchow]

You need to send p, true p (not psf) to the Dreamcolor, other wise you will not get the Dreamcolor engine to work properly. What format are you working in?

Also, to adjust the proper pluge level, you need to send bars to the monitor and adjust the black level.

Jeremy

[Jeremy Garchow]

Oh, and use the Rgb setting.

[Jorge Torrens]

Thanks Jeremy, but I was sending a true progresive signal in RGB, I’m not having a problem being able to access the colorspaces in the dreamcolor, is with the hdmi output in the aja IoExpress that doesn’t seem to send a proper signal using hdmi, the monitor is already calibrated and works right if I go via sdi from the aja and use hdlink to convert to dvi.

Best regards

Jorge

[Gary Adcock]

[Jorge Torrens] “Thanks Jeremy, but I was sending a true progresive signal in RGB,”

jorge.

You set the HDMI preference to be RGB in the Kona Control Panel?

how are you sure the content RGB?
I do this regularly and I am not having any issue with the IoXpress.

[Jorge Torrens] “he monitor is already calibrated and works right if I go via sdi from the aja and use hdlink to convert to dvi. “

how is the HDlink configed internally? is it configed to handle some of the conversion?

– ( FYI – HP does not recommend that config for proper handling of the content only the Geffen and AJA boxes are supported for HDSDI -HDMI conversion)

gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows for the Digitally Inclined
Chicago, IL

https://library.creativecow.net/articles/adcock_gary/AJAIOHD.php

[Jorge Torrens]

Thanks for your reply Gary, yes I have set the HDMI preference to RGB and tried both, Full Range and SMPTE in the drop box next to it, sorry I don’t recall how this preference is called.

I have tried this with red footage converted to prores, straight red footage in color and also a generated gradient in nuke which is allways RGB, and in all programs with the same result.

The HdLink always converts to rgb, and the only prefrence is for using true progressive intead of PFs, and I’m aware this is not the prefered way to do it, The HDLINK downsamples to 8bit, as dvi is only 8bit, that’s why I bougth the IoExpress, to use HDMI 1.3 straight of the IOExpress, going trough SDI and the HDLink was only a way to test if the problem was with all of the Aja outputs ore only with HDMI.

Before, I was using sdi out of a multibrige pro with the hdlink going to the dreamcolor via dvi, and it was working just fine, besides being 8bits of course, and thats the reason that I went to the aja, to use the 10bits out of the HDMI 1.3 as i said above.

I doubt it has anything to do with the cables, I have tried a couple, so I’m quite lost as what is causing the problem.

Thanks a lot for your help

Jorge

[Jeremy Garchow]

Just to reiterate, you have the video output set to true p in FCP?

I’ll have to try this on MOnday, but right now I have the HDP2 with a DVI to HDMI cable. True p, 10bit and the scaling and de-interlacing is awesome with the HDP2 (for non p sources).

Jeremy

[Jorge Torrens]

Hi Jeremy, yes I have true p originated material, I work mostly with Red originated files or panasonic 3000 and both in 24p or 25p. My problem is not with the quality of the image, it looks fine, but with the black levels, that are too high and noisy even in a graphic image, such as a gradient and viewing it in a native rgb program like after effects or nuke.
On monday I will try to create a new rec 709 calibrated profile with the hp probe and see how it looks. but I’m not confortable doing this, as the monitor is already calibrated and I think that is the Aja HDMI output the culprit here.

Thanks a lot for taking and interest trying to help me whit this issue.

Jorge

[Jeremy Garchow]

It does matter that your material is also progressive, but your video output of FCP must be set for p and not psf. It makes all the difference. The Dreamcolor will tell you if you’re getting 24 or 25 Hz. Psf would be 48 or 50 Hz. This is a good way to check if you’re getting true 1080p and not SMPTE psf.

[Jorge Torrens]

Hi Jeremy, sorry but probably is my lack of command of the english language, spanish is my mother tonge, I’m using true progresive material originated at 4k in a RED camera at 24 fps and converted to prores 422 at 1080p also in 24 fps. and in a 1920×1080 24fps timeline, if I would be outputing 24PsF the dreamcolor would not allow me to select a colorspace other than full range and I can choose rec709 with no problems.

I’ve been using the dreamcolor with a multibridge and a hdlink for over a year now with no problems at all, but I wanted to use the 10bit monitoring capabilities of the aja over HDMI and there is where I see the problem, the dvi output off the aja works well.

Thanks Jeremy for your help, and patience.

Jorge

[Tim Kolb]

Can you supply a bit more information?

for instance, are you on a Mac or a PC? i don’t find any indication in your posts…the IO Express works on the dark side too.

second…can you tell us what the settings are for out put in the IO Express control panel…and what happens if you play a clip out of Machina? (this would be for a PC…I don’t know is Machina is on the Mac side)

What are you edit project settings?

TimK,
Director, Consultant
Kolb Productions,