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sooo... anyone knows what's the new DNX bitrate?

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Hector berrebi
sooo... anyone knows what's the new DNX bitrate?
on Nov 4, 2011 at 5:20:37 am

DNXHD 4:4:4 RGB... i couldn't find it anywhere in the release notes or on the Avid website.
maybe i didn't look hard enough, but at a first glance (and second and even third) it seems like its not info Avid deems important to share. i think its strange.

oh how long i've waited for this one DNX 4:4:4... all warm inside.. :)


hector.

Hector Berrebi
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Job ter Burg
Re: sooo... anyone knows what's the new DNX bitrate?
on Nov 4, 2011 at 7:11:57 am

Ranging from 442Mb/s for 720p23.976 to 1989Mb/s for 1080i59.94.


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Hector berrebi
Re: sooo... anyone knows what's the new DNX bitrate?
on Nov 4, 2011 at 12:29:43 pm

[Job ter Burg] "Ranging from 442Mb/s for 720p23.976 to 1989Mb/s for 1080i59.94."

hi Job

that sounds very interesting... if i'm calculating right, that's 2:1.
where did you get this info from?

is there white paper for the new DNX?


hector

Hector Berrebi
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Job ter Burg
Re: sooo... anyone knows what's the new DNX bitrate?
on Nov 4, 2011 at 6:26:07 pm

Pretty sure it's uncompressed 4:4:4 RGB.


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Hector berrebi
Re: sooo... anyone knows what's the new DNX bitrate?
on Nov 4, 2011 at 7:08:47 pm

[Job ter Burg] "Pretty sure it's uncompressed 4:4:4 RGB.
"


you're right, i was calculating for 60P not i

but if its uncompressed... why is it DNX? and how is it different from what's currently available?

i'm still betting in the area of 2:1

Hector Berrebi
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Chris Conlee
Re: sooo... anyone knows what's the new DNX bitrate?
on Nov 5, 2011 at 12:17:13 am

Yeah, it's gotta be compressed, 'cause the marketing literature says something about maintaining your pristine color in a bandwidth-friendly manner (or words to that effect)...

Chris


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Job ter Burg
Re: sooo... anyone knows what's the new DNX bitrate?
on Nov 5, 2011 at 9:13:53 am

If you do the maths, it is uncompressed. Period. The data rates I quote are correct.


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Job ter Burg
Re: sooo... anyone knows what's the new DNX bitrate?
on Nov 5, 2011 at 9:18:26 am

P.S.: They don't label it as DNxHD. It is labeled "1:1".


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Hector berrebi
Re: sooo... anyone knows what's the new DNX bitrate?
on Nov 5, 2011 at 10:12:41 am

[Job ter Burg] "P.S.: They don't label it as DNxHD. It is labeled "1:1".
"


then why make a big deal of it and publish as a new feature?

rgb 4:4:4 1:1 has been around for a while

http://www.avid.com/us/products/media-composer?intcmp=AV-HP-S2

Hector Berrebi
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Job ter Burg
Re: sooo... anyone knows what's the new DNX bitrate?
on Nov 5, 2011 at 5:10:58 pm

I think I am mistaken and indeed am confusing the existing 4:4:4 RGB 1:1 10bit resolution with the new one.


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Mike Most
Re: sooo... anyone knows what's the new DNX bitrate?
on Nov 5, 2011 at 5:16:36 pm

No, if you do the math, it is approximately 2.5:1. Uncompressed HD is approx. 1.2 gigabits per second. The 440Mb rate is essentially identical to HDCam SR, and identical to the SR Master format Sony is offering with the F65.


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Job ter Burg
Re: sooo... anyone knows what's the new DNX bitrate?
on Nov 5, 2011 at 7:20:20 pm

Ah, so 444 is not just 4:4:4 but also 444 (unlike 175). I get it now. Thanks.


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Hector berrebi
Re: sooo... anyone knows what's the new DNX bitrate?
on Nov 6, 2011 at 2:57:28 am

[Mike Most] "No, if you do the math, it is approximately 2.5:1. Uncompressed HD is approx. 1.2 gigabits per second. The 440Mb rate is essentially identical to HDCam SR, and identical to the SR Master format Sony is offering with the F65.
"


oh... cool, so its 444 Mbs... slightly more beefed up than Prores and matches HDCAM SR.

Mike, where was this published?

hector

Hector Berrebi
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Chris Conlee
Re: sooo... anyone knows what's the new DNX bitrate?
on Nov 7, 2011 at 5:06:44 pm

I saw a press release this morning from Arri saying they're creating a DNxHD recording option for their Alexa camera. In that release they published the 444 codec as 440Mb/sec, if I'm not mistaken.

Chris


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