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converting HD 10bit 25fps to HD 10bit 29.97fps

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Lawrence Fee
converting HD 10bit 25fps to HD 10bit 29.97fps
on Jan 27, 2010 at 12:52:14 pm

Hi,

I am looking for the best way to convert HD uncompressed 1440 x 1080 25fps to HD uncompressed 1440 x 1080 29.97fps.

Here is the background.

A client dropped in a project which has been cut in FCP. The rushes originated as HDV 1440 x 1080 25fps.

The final edit was exported to quicktime movie as Uncompressed 10-bit 1440 x 1080 25fps.
I have taken the quicktime back into FCP to marry final mix audio.

The final delivery has to be Uncompressed 10-bit 29.97fps. (being sent on hard drive to USA for DVD).

I have exported FCP to quicktime reference onto desktop, dragged into Compressor and used Advanced Format Conversions;- HD Uncompressed 10-bit 1080i60.

The default geometry was 1920 x 1080.
I have changed the geometry to 1440 x 1080 to retain original size.

The result when opened in Quicktime looks Anamorphic (I presume because it is 1440 x 1080 instead of 1920 x 1080). Pans,and movement look fine (with the conversion to 29.97fps.).

Two questions -
1. Is this the best way to achieve the result without going through a Standards Convertor.
2.Would it be better to change size to 1920 x 1080.


Thanks,
Lawrence


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Rafael Amador
Re: converting HD 10bit 25fps to HD 10bit 29.97fps
on Jan 27, 2010 at 4:32:20 pm

Hi Lawrence,
Thats the correct process in Compressor.
You may see the film distorted because your movie have HD pixels and probably QT will read it as Square pixels, but is OK.
However he people that will reprocess the movie must be aware of this.
In Compressor you need to set Frame Control: ON.
Try with Re-timing "Better"
Chers,
rafael
If the movie doesn't need further process before the DVD, I would make the downscaling at once.
Avoid one more rendering is always good.


http://www.nagavideo.com


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Lawrence Fee
Re: converting HD 10bit 25fps to HD 10bit 29.97fps
on Jan 29, 2010 at 2:27:18 pm

HI Rafael,

Thanks for feedback.

Results have now gone out on drive, so we shall see.

Thanks,
Lawrence


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