that depends on the amount of compression.   Photo jpeg below 75 is 4.2.2
and regular jpeg doesnt to chroma.  Depends oh the library Nuke is using to
write the jpeg.


"Although a JPEG file can be encoded in various ways, most commonly it is
done with JFIF encoding. The encoding process consists of several steps:

   1. The representation of the colors in the image is converted from
RGB<http://en.wikipedia.org/wiki/RGB_color_model>
    to Y′CBCR <http://en.wikipedia.org/wiki/YCbCr>, consisting of one
luma<http://en.wikipedia.org/wiki/Luma_(video)> component
   (Y'), representing brightness, and
twochroma<http://en.wikipedia.org/wiki/Chrominance> components,
   (CB and CR), representing color. This step is sometimes skipped."


This step is a hit more mis skipped depending on the encoder.

Randy S. Little
http://www.rslittle.com <http://reel.rslittle.com>




On Mon, Jun 20, 2011 at 15:25, Tim BOWMAN <[email protected]> wrote:

> Ryan, If you want to end up with a Photo-JPEG movie, you can use FFMPEG to
> do this, too. Render JPEGs from Nuke and then compile them into a Quicktime
> with FFMPEG. You're not recompressing so it goes really fast.
>
> -t
>
> On Jun 20, 2011, at 11:19 PM, Ryan O'Phelan wrote:
>
> > While were on the subject, we use ffmpeg on the farm to make mpg, but I
> would love to script QT to make movs. I know deadline does it, but we use
> muster.  Suggestions?
> >
> > Ryan
> >
> >
> > On Jun 20, 2011 2:06 AM, "Ron Ganbar" <[email protected]> wrote:
> > >
> > > Can you describe the problem again with your new findings?
> > >
> > > R
> > >
> > > On Jun 20, 2011 6:29 AM, "Sebastian Kral" <[email protected]>
> wrote:
> > > > Hi guys,
> > > >
> > > > sorry for the late answer I had to take care of other problems first.
> > > > I also did some other research on my end.
> > > > Unfortunately I was wrong nuke does not render locally. It did render
> because the codec is not only set but also there is a template write node
> being copied afterwards. So on the local machine I ignored the error because
> it seemed to work. That is not the case if I disable the template copying.
> > > >
> > > > Perhaps you have a new approach for me. I am still clueless.
> > > >
> > > > Cheers
> > > >
> > > > Sebastian
> > > >
> > > >
> > > > Am 15.06.2011 um 15:31 schrieb adam jones:
> > > >
> > > >> Ah
> > > >> I seem to be missing a large part of this thread.
> > > >>
> > > >> Yep we render to deadline and then have deadline to render a qt at
> end of sequence render
> > > >>
> > > >> -adam
> > > >>
> > > >> Sent from my iPhone
> > > >>
> > > >> On 15/06/2011, at 16:16, Randy Little <[email protected]>
> wrote:
> > > >>
> > > >>> Adam they are not talking about using multiple machines to render a
> quicktime they are talking about using a machine on the farm as a qt time
> rendering box which is a pretty common pipeline thing to do.
> > > >>> Also you can distributed render QT on a farm if its a Mac farm
> using compressor.
> > > >>>
> > > >>>
> > > >>> Randy S. Little
> > > >>> http://www.rslittle.com
> > > >>>
> > > >>>
> > > >>>
> > > >>>
> > > >>> On Wed, Jun 15, 2011 at 00:03, adam jones <[email protected]>
> wrote:
> > > >>> you can not render a quicktime file over a render farm.
> > > >>>
> > > >>> it kinda makes sense if you think about it.....
> > > >>>
> > > >>> render the frame sequence first then create a movie file.
> > > >>>
> > > >>> -adam
> > > >>>
> > > >>> On 15/06/2011, at 3:01 PM, nand kishor wrote:
> > > >>>
> > > >>>> May be page 704 of User Guid help you regarding quick time render.
> > > >>>>
> > > >>>> On Tue, Jun 14, 2011 at 7:17 PM, Ron Ganbar <[email protected]>
> wrote:
> > > >>>> Sebastian,
> > > >>>> as we eliminated all other problems, the only thing I have left to
> suspect is deadline. I never used deadline, so I don't know what it's issues
> are.
> > > >>>> Anybody successfully did this on deadline?
> > > >>>>
> > > >>>>
> > > >>>>
> > > >>>> Ron Ganbar
> > > >>>> email: [email protected]
> > > >>>> tel: +44 (0)7968 007 309 [UK]
> > > >>>> +972 (0)54 255 9765 [Israel]
> > > >>>> url: http://ronganbar.wordpress.com/
> > > >>>>
> > > >>>>
> > > >>>>
> > > >>>> On 14 June 2011 12:36, Abraham Schneider <[email protected]>
> wrote:
> > > >>>> @Abraham: I have an english win 7 and installed an english version
> > > >>>> of quicktime (7.6.9). unfortunately before i had chinese in the
> > > >>>> "language for non-unicode programs" option in the "region and
> > > >>>> language" settings. I changed it to english, uninstalled quicktime
> > > >>>> and reinstalled the english version again to be sure.
> unfortunately
> > > >>>> it did not help.
> > > >>>>
> > > >>>> and you have an english Win 7 and QT on both machines, the
> workstation
> > > >>>> where you created the setup and the render machine?
> > > >>>>
> > > >>>> Abraham
> > > >>>>
> > > >>>>
> > > >>>>
> > > >>>>
> > > >>>>
> > > >>>> Am 13.06.2011 um 17:09 schrieb Ron Ganbar:
> > > >>>>
> > > >>>> And are you sending all the frames to a single machine?
> > > >>>>
> > > >>>>
> > > >>>> Ron Ganbar
> > > >>>> email: [email protected]
> > > >>>> tel: +44 (0)7968 007 309 [UK]
> > > >>>> +972 (0)54 255 9765 [Israel]
> > > >>>> url: http://ronganbar.wordpress.com/
> > > >>>>
> > > >>>>
> > > >>>>
> > > >>>> On 13 June 2011 09:54, Sebastian Kral <[email protected]> wrote:
> > > >>>> Sorry, forgot to mension we are using windows 7 on all machines.
> > > >>>>
> > > >>>> @Gary: No it is not even opening for rendering. It is not being
> > > >>>> stuck at the filesize. Also the resuting movie will probably not
> be
> > > >>>> over 400MB.
> > > >>>>
> > > >>>> Am 13.06.2011 um 13:33 schrieb Gary Jaeger:
> > > >>>>
> > > >>>> is it possible you're running into a QT API bug?
> > > >>>>
> > > >>>>
> http://blogs.adobe.com/toddkopriva/2011/05/cant-create-quicktime-movie-larger-than-2-15gb-across-network-using-afp.html
> > > >>>>
> > > >>>>
> > > >>>> On Jun 11, 2011, at 10:37 PM, Sebastian Kral wrote:
> > > >>>>
> > > >>>> Hi guys,
> > > >>>>
> > > >>>> I have a problem when I want to render a quicktime on our farm.
> > > >>>> When nuke opens the file it returns this error: "ERROR: Bad value
> > > >>>> for codec : Photo - JPEG". Deadline thinks it did not work and
> > > >>>> stops the renderjob.
> > > >>>> I do not know why the error is returned because if I open the
> > > >>>> script locally the error also appears but if I check the write
> > > >>>> node, everything is fine and the codec is in place. I can render
> > > >>>> locally afterwards.
> > > >>>>
> > > >>>> Programs:
> > > >>>> Nuke 6.2v4
> > > >>>> Deadline 5
> > > >>>>
> > > >>>> Any help is very appreciated. Thank you
> > > >>>>
> > > >>>> Best
> > > >>>>
> > > >>>> Sebastian Kral
> > > >>>>
> > > >>>>
> > > >>>> Abraham Schneider
> > > >>>> Senior VFX Compositor
> > > >>>>
> > > >>>>
> > > >>>> ARRI Film & TV Services GmbH
> > > >>>> Tuerkenstr. 89
> > > >>>> D-80799 Muenchen / Germany
> > > >>>>
> > > >>>> Phone +49 89 3809-1269
> > > >>>>
> > > >>>> EMail [email protected]
> > > >>>> www.arri.de/filmtv
> > > >>>> _______________________________________________
> > > >>>> Nuke-users mailing list
> > > >>>>
> > > >>>> [email protected], http://
> > > >>>> forums.thefoundry.co.uk/
> > > >>>>
> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
> > > >>>>
> > > >>>> . . . . . . . . . . . .
> > > >>>> Gary Jaeger // Core Studio
> > > >>>> 86 Graham Street, Suite 120
> > > >>>> San Francisco, CA 94129
> > > >>>> 415 543 8140
> > > >>>> http://corestudio.com
> > > >>>>
> > > >>>> _______________________________________________
> > > >>>> Nuke-users mailing list
> > > >>>> [email protected],
> http://forums.thefoundry.co.uk/
> > > >>>>
> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
> > > >>>>
> > > >>>>
> > > >>>> _______________________________________________
> > > >>>> Nuke-users mailing list
> > > >>>> [email protected],
> http://forums.thefoundry.co.uk/
> > > >>>>
> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
> > > >>>>
> > > >>>> _______________________________________________
> > > >>>> Nuke-users mailing list
> > > >>>> [email protected],
> http://forums.thefoundry.co.uk/
> > > >>>>
> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
> > > >>>>
> > > >>>> _______________________________________________
> > > >>>> Nuke-users mailing list
> > > >>>> [email protected],
> http://forums.thefoundry.co.uk/
> > > >>>>
> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
> > > >>>>
> > > >>>> ________________________________
> > > >>>>
> > > >>>>
> > > >>>> ARRI Film & TV Services GmbH
> > > >>>> Sitz: München Registergericht: Amtsgericht München
> > > >>>> Handelsregisternummer: HRB 69396
> > > >>>> Geschäftsführer: Franz Kraus, Dr. Martin Prillmann, Josef
> Reidinger
> > > >>>> _______________________________________________
> > > >>>> Nuke-users mailing list
> > > >>>> [email protected],
> http://forums.thefoundry.co.uk/
> > > >>>>
> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
> > > >>>>
> > > >>>>
> > > >>>> _______________________________________________
> > > >>>> Nuke-users mailing list
> > > >>>> [email protected],
> http://forums.thefoundry.co.uk/
> > > >>>>
> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
> > > >>>>
> > > >>>> _______________________________________________
> > > >>>> Nuke-users mailing list
> > > >>>> [email protected],
> http://forums.thefoundry.co.uk/
> > > >>>>
> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
> > > >>>
> > > >>>
> > > >>> _______________________________________________
> > > >>> Nuke-users mailing list
> > > >>> [email protected],
> http://forums.thefoundry.co.uk/
> > > >>>
> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
> > > >>>
> > > >>> _______________________________________________
> > > >>> Nuke-users mailing list
> > > >>> [email protected],
> http://forums.thefoundry.co.uk/
> > > >>>
> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
> > > >> _______________________________________________
> > > >> Nuke-users mailing list
> > > >> [email protected],
> http://forums.thefoundry.co.uk/
> > > >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
> > > >
> > > > --
> > > >
> > > > Sebastian Kral
> > > >
> > > > mobile +86 18601749705
> > > >
> > > > Changshou Road Lane 1028 No. 8, Rm. 501
> > >
> > > > Putuo District 市普陀区长寿路1028弄8号501室
> > > > Shanghai 200060, China 中国上海
> > > >
> > > > [email protected] - http://sebastiankral.de
> > > >
> > >
> > > _______________________________________________
> > > Nuke-users mailing list
> > > [email protected], http://forums.thefoundry.co.uk/
> > > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
> > _______________________________________________
> > Nuke-users mailing list
> > [email protected], http://forums.thefoundry.co.uk/
> > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
>
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