From what you've written, I'm assuming your student shot on the NX70
with its internal codec, which I believe is AVCHD, 8 bit, 4:2:0 at
24mbps VBR. That's a superb codec for that modest bit-rate, but both
DNxHD 115 and ProRes 115 are far better, so nobody will ever see any
difference between the two after you transcode to either.
If you're gonna twist my arm and force me to choose which is "better"
for this particular workflow, I guess I'd say DNxHD. The extra
bit-depth in ProRes is wasted because this source material is only 8
bits. Might as well use those bits elsewhere. But again, this is
theoretical; they are both gonna be "lossless" coming from AVCHD.
On Wed, Apr 24, 2013 at 11:33 PM, michaeljshen76 <mikejshen@gmail.com> wrote:
> Hoping some codec gurus can help me.
> One of my students mistakenly transcoded all of the footage for his 30-minute documentary to DNxHD 115. The rest of the class is editing and finishing their films in ProRes MXF.
> Is there a quality difference between the two codecs? I've read much suggesting they are roughly comparable.
> The project in question is 1080p 23.976. Most of the footage was shot on the Sony NX-70, with a bit of HPX3100 and DSLR sprinkled in.
> We're all in serious crunch mode, so we'd prefer not to have to up-rez any of the projects, especially since the student's media management is unlikely to have been spotless.
> We'll run some comparison tests, but we don't have a terrific monitor at the school; so any opinions are much appreciated. Thank you!
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