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PAL DV to ProRes HQ Render changing pixel aspect

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Chad Smith
PAL DV to ProRes HQ Render changing pixel aspect
on Jun 10, 2012 at 3:51:04 pm

Brought a PAL DV XML into resolve and rendered to Pro Res HQ. When I bring it back into FCP and Cut it back into the original Seq with the graphics and lower thirds, FCP puts a distort filter on all the cc'd footage. Both cuts in FCP say PAL CCIR 601 DV PAL 5:4 under the settings. If I look at the files in qt the original PAL DV file is 720 x 576 + 768 x 576 (actual) and the Pro Res file is 720 x 576 and 787 x 576 It appears that the pixel aspect is changing. What is the proper aspect ratio for my final output to PAL DVD?


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Sascha Haber
Re: PAL DV to ProRes HQ Render changing pixel aspect
on Jun 10, 2012 at 4:48:10 pm

Hey Rohit, remember ?

Same Problem still persisting ?

My solution was to avoid the source files, render to DPX and set it all to square pixel.
So far Resolve is unable to treat field source (and or DV) material correctly.

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Chad Smith
Re: PAL DV to ProRes HQ Render changing pixel aspect
on Jun 10, 2012 at 5:53:33 pm

Hey Sasha thanks for the response. Wow no fields in Resolve!? How do I go about "avoiding the source files?" Do I need to transcode all the clips to pro res from DV-PAL? Perhaps with compressor? Then do I loose all the color work I have done so far on this project?

If I render to DPX how do I get it all back into FCP? Perhaps render as Target and bake all the clips together then convert to pro res from DPX?

Thanks!!


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Sascha Haber
Re: PAL DV to ProRes HQ Render changing pixel aspect
on Jun 10, 2012 at 6:22:52 pm

What I did was consolidating my source clips, render to DPX in AE, rebuild the timeline in Resolve using the DPX files, do my grading work and then write ProRes from Resolve to use back in FCP.
I also was unable to write out a DV-Pal codec that Desktop Video understood...from Resolve...AE worked fine ;)

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Chad Smith
Re: PAL DV to ProRes HQ Render changing pixel aspect
on Jun 10, 2012 at 6:47:04 pm

Wow that is quite the work around. The doc I am working on has 287 Clips. Pushing all that through AE sounds painful. Did you find another way to translate the files to DPX? It seems the AJA solution only like RGB files. Once you had your DPX files did you bring that into Resolve with an EDL generated from FCP? I have not had the best luck bringing EDLs into Resolve.


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Sascha Haber
Re: PAL DV to ProRes HQ Render changing pixel aspect
on Jun 11, 2012 at 7:19:12 am

Well, today I would use Scratch if its a lot of media.
You can of course try a codec2codec solution in FCP.
The problem is the DV codec basically.
Glue tools renders DPX from FCP too.
Oh, I had a documentary with 1400 clips...
So stop whining and get to it...good luck :)

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Margus Voll
Re: PAL DV to ProRes HQ Render changing pixel aspect
on Jun 11, 2012 at 12:48:32 pm

normally you would like to avoid fields all together to get "filmic" look.

I have not used fields like last 5 years and do not miss them.

Depending on your NLE you could get exported progressive material pretty easy i bet?

FCP has not been really good making progressive out of fields imo.

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Sascha Haber
Re: PAL DV to ProRes HQ Render changing pixel aspect
on Jun 11, 2012 at 9:31:54 pm

Thing is, you need the fields for a proper pull up or pull down conversion.
Also the Terranex does an amazing job if it has 24p to 29,97 "fake fields" and put em back to PAL.
So all i want is Resolve to be discreet and treat em as they come, not totally screwing it up.
Thats not the case right now.
I am not even talking about take em into the consideration for scaling.

A slice of color...

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bernard james
Re: PAL DV to ProRes HQ Render changing pixel aspect
on Jun 14, 2012 at 4:54:13 pm

Here is our process and If i did understand you very well :)

- duplicate the sequence in FCP ( pixel dvpal, 720x576, inférior, Apple prores )
- export the sequence
- import In Da vinci and use scène cut détection to create your EDL
- In média pool change the aspect pixel ratio to PAL or PAL 16/9 up to your case
- grading time
- render in prores with " enable video field rendering "
- re import in FCP:
- settings of your new sequence:
* change the frame from supérior to inférior
* change codec to DV pal
* pixel PAL or PAL 16/9

and normaly here you are :)

Cheers!

Bernard
Paris
France


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Chad Smith
Re: PAL DV to ProRes HQ Render changing pixel aspect
on Jun 14, 2012 at 5:22:09 pm

Thanks Bernard - when you say "supérior to inférior" you are speaking of fields correct? What is the upper field called? supérior or inférior ?


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bernard james
Re: PAL DV to ProRes HQ Render changing pixel aspect
on Jun 14, 2012 at 5:49:25 pm

yes...sorry for my english! "supérior" is upper field :)

Bernard
Paris
France


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