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ProRess vs. DNXHD in MC6

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Scott DavisProRess vs. DNXHD in MC6
by on Jan 12, 2012 at 9:16:06 pm

I have quiet a bit of ProRess HQ material that I need to ingest. I also will have quiet a bit of material that I will transcode to DNXHD145. I'm wondering if there is a reason for or against bringing the ProRess in via Fast Import and keeping as ProRess or AMA'ing it and transcoding it to DNX145.

Scott Davis
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Richard SanchezRe: ProRess vs. DNXHD in MC6
by on Jan 12, 2012 at 9:43:52 pm

I'm not sure if a PC MC6 can read Pro Res. I know it can't create Pro Res media, so that might be one reason to convert to DNxHD. Aside from that, DNX145 is 8-bit, and Pro Res is 10-bit, so that might be one reason to leave it Pro Res (Assuming it was acquired from a 10 bit source).

Richard Sanchez
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"We are the facilitators of our own creative evolution." - Bill Hicks


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Scott DavisRe: ProRess vs. DNXHD in MC6
by on Jan 12, 2012 at 10:04:30 pm

Thanks for the reply, once again, Richard.

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Shane RossRe: ProRess vs. DNXHD in MC6
by on Jan 12, 2012 at 11:10:56 pm

MC 6...being it PC or Mac...can read and AMA in ProRes files. They can both even convert ProRes QT to ProRes MXF. What the PC CANNOT do, is encode anything TO ProRes.

And DNxHD 145 is 8-bit, as Richard said. DNxHD 175 and up (220, 220X) is where you start getting 10-bit...while every version of ProREs is 10-bit

Shane
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Andrew McKeeRe: ProRess vs. DNXHD in MC6
by on Jan 12, 2012 at 11:37:41 pm

Isn't it only the X DNxHD codecs that are 10 bit (185x, 220x)? Also important to say that all versions of ProRes are potentionally 10bit but only if you feed them a 10 bit source.

Andrew McKee
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Shane RossRe: ProRess vs. DNXHD in MC6
by on Jan 13, 2012 at 1:05:43 am

Ah...right...that's what it is. The "X" DNxHD formats are 10-bit....

Shane
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Dirk DeJongheRe: ProRess vs. DNXHD in MC6
by on Jan 13, 2012 at 5:42:59 am

ProResHQ is 10bit, ProRes(noHQ) is 8bit.

http://www.postproduction.be


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Shane RossRe: ProRess vs. DNXHD in MC6
by on Jan 13, 2012 at 6:01:54 am

[Dirk DeJonghe] "ProResHQ is 10bit, ProRes(noHQ) is 8bit."

Nope. ProRes, any flavor, is 10-bit.

http://en.wikipedia.org/wiki/ProRes_422

Key features

Full-width 1920x1080 and 1280x720
4:2:2 chroma sampling
10-bit sample depth

Shane
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Andrew McKeeRe: ProRess vs. DNXHD in MC6
by on Jan 13, 2012 at 9:09:44 am

Yup. All flavours can be 10bit. But again, only if they are fed a 10bit source. They do not convert 8bit up to 10bit.

Andy

Andrew McKee
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Dirk DeJongheRe: ProRess vs. DNXHD in MC6
by on Jan 13, 2012 at 11:26:42 am

OK, we are both right then.

http://www.postproduction.be


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Ben HolmesRe: ProRess vs. DNXHD in MC6
by on Jan 13, 2012 at 3:12:10 pm

[Dirk DeJonghe] "OK, we are both right then."

No - not to pick holes, but this is a common misconception - you were wrong in your first statement.

Standard ProRes is 10-bit, exactly like ProResHQ (which just has a higher bitrate, so is less lossy).

It's misleading within this discussion to bring in the notion that converting an 8-bit source to 10-bits won't make it 10-bit; of course it won't. You could say that about any 10-bit codec.

Just making sure there's no confusion for anyone searching this thread, as I suspect this issue will come up for many 'switchers'.

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Shane RossRe: ProRess vs. DNXHD in MC6
by on Jan 13, 2012 at 3:16:49 pm

Taking an 8-bit codec and converting it to ProRes won't change the ORIGINAL data rate, but it is now in a 10-bit color space. But the 8-bitness won't go away.

Shane
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