Official: HDMI 1080 IS INTERLACED ONLY

[Stuart U]

Nikon USA answered my query about HDMI output: "1080 HDMI output is interlaced only. 720 is progressive."

[Stuart U]

According to the manual: the D4 is the same: 1080 HDMI is interlaced only. All other resolutions are Progressive. Page 281 @ http://www.nikonsupport.eu/europe/Ma...4/D4_En_01.pdf

[dfreerider]

That is not uncommon. I don't know of any camera available that does 1080p over HDMI. They all wrap the progressive frames in interlaced, but the fields are the same. It can be removed in post by different methods depending on the framerate. So it is not the old interlaced video look with 50/60 fields pr second, but progressive frames in an reversible interlaced stream.

From the Atomos website on how cameras deliver 1080 25p and 30p over HDMI
http://atomos.activehosted.com/kb/ar...5psf-explained :

If you set your internal recording to 25P the camera outputs this as 50i, however it is recorded as a 25PsF in a 50i wrapping. In fact presently all Cameras output via HDMI at either 50i or 60i. There is not a camera that outputs native 25P or 30P out of the HDMI port."

For 24p the way it is encoded is different. You can read more about this here: http://atomos.activehosted.com/kb/ar...and-hdmi-ports

So for Nikon to deliver 1080p over HDMI, they would have to step outside of the standard method of transfer. Hopefully 1080p HDMI will become a standard soon, so we don't have to deal with pulldown removal in post. But if you use for instance a Atomos Samurai it can do the pulldown removal automatically when recording.

-Kyle

[md673]

That is not uncommon. I don't know of any camera available that does 1080p over HDMI. They all wrap the progressive frames in interlaced, but the fields are the same. It can be removed in post by different methods depending on the framerate. So it is not the old interlaced video look with 50/60 fields pr second, but progressive frames in an reversible interlaced stream.

From the Atomos website on how cameras deliver 1080 25p and 30p over HDMI
http://atomos.activehosted.com/kb/ar...5psf-explained :



For 24p the way it is encoded is different. You can read more about this here: http://atomos.activehosted.com/kb/ar...and-hdmi-ports

So for Nikon to deliver 1080p over HDMI, they would have to step outside of the standard method of transfer. Hopefully 1080p HDMI will become a standard soon, so we don't have to deal with pulldown removal in post. But if you use for instance a Atomos Samurai it can do the pulldown removal automatically when recording.

-Kyle

Yep, you're exactly right. The solution to this is to use an external recorder that can perform the pulldown on the fly. I'm leaning towards the nanoFlash, but I'm sure more options will come out during NAB this year.

Matt

[Stuart U]

Thank you. That is a relief. My apologies for the overly dramatic headline.
I thought all was lost for a moment. Having said that, the 720P in camera mode looked very clean on John Wright's fashion shoot video: http://vimeo.com/38009435


I have high hopes for the D800 1080 HDMI

[Cosimo Bullo]

For the love of Christ, will SOMEONE just take the thing out and shoot a little moving footage with detail with the HDMI record???

[Blackpeppers]

+1

[Cosimo Bullo]

Thing also seems to have an intervolometer built in. Nice.

[Zephyrnoid]

Yep, you're exactly right. The solution to this is to use an external recorder than cod perform the pulldown on the fly. I'm leaning towards the nanoFlash, but I'm sure more options will come out during NAB this year.

Matt

Yup AND Yup to both statements. NAB.... wonder if I should go there this year?

[squig]

Yup AND Yup to both statements. NAB.... wonder if I should go there this year?

get a kickstarter going