EPIC HD-SDI output

[Mariusz Cichon]

I am trying to figure out if I could use EPIC camera live HD-SDI output to record on external recorder in 1080p.
I know I can transcode to 1080 and I did that for all these years with RED MX. I know it is best option.

I hoped that EPIC will give me full range great looking image so in some cases I do not have to transcode 5K files.
What I see on waveform is that black start at 6 % IRE and white clip at 96% IRE. This is not a full range.

Has anybody tried to record externally or test signal from HD SDI connector?

 

[Andy White]

In the Epic manual, it seems you have the option of configuring HD-SDI 10-bit 4:2:2 Y, Cb, Cr or 8-bit 4:4:4 RGB. I'm sure users/owners will chip in with realworld insight - but there's info on page 14 (and more throughout the doc), so I'd presume external recording is possible.

 

[Mariusz Cichon]

Thanks but only settings that are there for HD SDI are output views: PROGRAM, GUIDE and PREVIEW.
All of them clip in the same range.

 

[Paul Nordin]

Yeah, I thnk 444 RGB and 10 bit are down the road firmware upgrades.

 

[Andy White]

Which external recorder are you looking to use (or used with your Red-MX in the past)?

 

[Mariusz Cichon]

I wouldn't use external recorder with MX as image quality is not great on HDSDI and it is only 720p
EPIC is suppose to have full quality 1080p output. When that happens I may use on of many coming out external recorders.
I was testing with my Kona 3G card and Leader 5330 waveform.

 

[Andy White]

I wouldn't use external recorder with MX as image quality is not great on HDSDI and it is only 720p
EPIC is suppose to have full quality 1080p output. When that happens I may use on of many coming out external recorders.
I was testing with my Kona 3G card and Leader 5330 waveform.

OK :smile5: - was only asking as there seems to be something related to the clipped range going on when using external recorders going straight to Prores (one thread here http://www.dvxuser.com/V6/showthread.php?256594-AJA-KiPro-is-clipping-the-signal/page4).

Just thought there might be something in the way the Kona records (it's Prores also)... I know the Kona is studio soluton rather than a field one... and you are looking at the scope also... but it might be worth investigating?

I also encountered clipped ranges on high end Nvidia cards used on PC's (an unrelated issue - but linked with range clipping as, by default, the cards/driver worked on a reduced gamma range) which was annoying as the CG studio I was Directing for, had 65 workstations - and all but a handful had this issue, whcih obviously was a real PITA as CG artist's work used to come in with crazy colour ranges.