Thanks Steve. I got a little lost in your last paragraph.
--- In Avid-L2@yahoogroups.com, Steve Hullfish <steve4lists@...> wrote:
> The problem is in your compression settings. Look for some filters or input settings that could be affecting the export.
For the sake of this conversation I'm using Compressor. There are no filters set.
>Are you exporting as RGB instead of 709?
I"ve been exporting 709. The project was 709, roundtripped to DaVinci. (Footage was shot 601 on Canon 5D & 7D, brought in AMA and then transcoded to DNxHD 175 709) A Same-as-Source 709 export yields a QT that matches what I see in Avid (and matches upon AMA reimport). An RGB Same as Source export gives me something darker, brighter and more saturated (but, oddly, still matches upon AMA reimport).
>If you're going to a computer delivery (internet) then 709 isn't the best choice. If you went RGB, you'd end up with a more "spread" export and that export may not wash out when going through compressor.
OK, this is where you lost me. Are you saying I should export RGB (even though the project is 709) so the 'more "spread"' QT will compress in H.264 to something close to the original? I just ran a test. I exported :02 from Media Composer, same as source, but with RGB selected. The QT does look darker, brighter and more saturated —what I'm guessing you mean by more spread. But if I then send it to Compressor and compress to H.264 I get something exactly the same (washed out) as if I had exported 709.
>Is Compressor expecting an RGB file? Maybe. And if you're feeding it 709, that would wash it out You have to make sure that the export settings of the Avid (as far as color space) are the same as the import settings of the compression program.
I don't know if Apple Compressor or QTPro or MPEG Streamclip have a setting to switch between 709 and RGB. I can't find them.
My brain hurts,
Martin
>
> Steve
>
> On Jun 3, 2013, at 10:13 AM, Martin <martin@...> wrote:
>
> > I appreciate I am likely beating a dead horse here, but I'm hoping
> > someone can't point me to a definitive link to my issue. I have searched
> > long and hard and all roads lead me to, well, other roads.
> > I am trying to compress a copy of my show for Vimeo. Vimeo requires the
> > H.264 codec. I export a copy of my show from MC 5.5.3 Same as Source. At
> > this stage I get, as you would expect, a QT that perfectly matches my
> > Avid cut for luma and chroma. I then have a choice on my system of
> > Compressor, MPEG Streamclip or QuickTime Pro to compress to H.264. All
> > three of these tools give me a sequence that is washed out: blacks,
> > whites and colors are all dull.
> > I've found and installed the X264 codec and tried it and I get a QT to
> > the other extreme: blacks crushed, whites blown out and colors
> > exaggerated.
> > Am I having this problem because none of these compressors are good
> > enough? Is there a successful workaround? As inelegant as it is, I would
> > be prepared to adjust the levels on my show before export, but how much?
> > Honestly, I'm not trying to get folks to repeat a conversation that's
> > been talked to death, but X264 was my last lead.
> > (Due diligence forced me to do one more search before hitting Send and I
> > came up with this
> > <http://byteful.com/blog/2010/07/how-to-fix-the-h264-gamma-brightness-bu\
> > g-in-quicktime/> from July of 2010 regarding a Japanese version of
> > X264. Has anyone tried this? I will be.)
> > Any direction would be hugely appreciated,
> > Martin
> >
> > [Non-text portions of this message have been removed]
> >
> >
>
>
>
> [Non-text portions of this message have been removed]
>
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