I think you're responding to me, Bouke.
I ran into this in 8.4.x on Mac. Using a 10-bit codec for the mixdown, of course it was technically 10-bit, but values were internally truncated to 8-bit unless timeline was in green-10bit mode. IIRC, source footage was AMA-linked, and mixdown was to some flavour of DNxHR, in 4K.
Cheers,--Michael
On 2016-08-30 2:03 AM, 'Edit B' bouke@editb.nl [Avid-L2] wrote:
That does not make sense. (And does not happen here, Windows MC 8.6.1)AFAIK, any portion in the correct mixdown codec will be copied rather than transcoded.You should see HUGE speed differences between modes. Is that the case?BoukeVideoToolShed
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+31 24 3553311----- Original Message -----Sent: Tuesday, August 30, 2016 6:38 AMSubject: Re: [Avid-L2] When does Avid go into 10 bit mode in 4K renders?
Hi John:
On 2016-08-28 7:22 AM, bigfish@pacbell.net [Avid-L2] wrote:
I've recently been told by a fellow online editor that he had seen Avid take his 10 bit material and on certain exports to ProRes his export was only 8 bit. If he did an internal Avid mixdown to ProRes first then exported same as source he said that had resolved his 8 bit problem. Now given my new awareness that all ProRes is at least 10 bit I don't see how this editor was getting 8 bit on his exported file. I assume he was using a custom export to turn avid dnx media to ProRes in the case where he felt the export was 8 bit but I don't know for sure.I believe the only way to get 10-bit out of Avid is by same-as-source export or via still image sequences that are 10-bit capable -- ie. 16-bit TIFF, and now, presumably, DPX. This was discussed at some length on the list a few years ago, and Avid engineering confirmed it at that time.
Something to be aware of, along the lines of your original question. While the timeline quality setting (yellow/green etc.) shouldn't affect render quality, it definitely does affect mixdown quality. If your timeline is not in 10-bit mode, any mixdowns will be strictly 8-bit -- or at least this was the case when I tested it on 8.4.x.
Cheers,
--Michael Brockington
Virus-free. www.avast.com
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