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Converting NTSC Apple OpenDML JPEG 24fps material to use in an HDV 1080p25 timeline?

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huw wahl
Converting NTSC Apple OpenDML JPEG 24fps material to use in an HDV 1080p25 timeline?
on Dec 9, 2013 at 11:41:58 am

Hi all,

I am new to posting here but have used the forum for a long time to help me. It's been great, but now i have a specific question.

I am making a film which has been shot On a canon XHA1 which records in PAL at HDV 1080p25

I have just received some canadian archive footage digitised in Canada, its is NTSC Apple openDML JPEG 24p

What do i convert it to in compressor to use it in my timeline?
I have tried converting to Apple Prores, with frame controls on, progressive, 100% of source, fast deinterlace. Is this right? It still needs rendering in my HDV timeline. but i do not want to lose quality by converting to HDV1080p25...

Or should i be converting to HDV1080p25 for ease of editing?

Any help would be appreciated. I am just worried i'll chose the wrong conversion and lose quality. It's been digitised at such high quality and is currently 60mbits/s!!!


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Shane Ross
Re: Converting NTSC Apple OpenDML JPEG 24fps material to use in an HDV 1080p25 timeline?
on Dec 9, 2013 at 5:09:12 pm

Any format you convert to that doesn't match your sequence settings will require rendering. But it should be a green render.

ProRes is what I'd use. But I'd also use ProRes sequence settings. Any non-HDV footage in and HDV timeline will conform to that format. Converting non-GOP to GOP.

Shane
Little Frog Post
Read my blog, Little Frog in High Def


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huw wahl
Re: Converting NTSC Apple OpenDML JPEG 24fps material to use in an HDV 1080p25 timeline?
on Dec 9, 2013 at 5:17:27 pm

Thanks Shane,

So you would suggest I use a ProRes sequence setting, and convert the footage to ProRes? Do i chose progressive under the 'output fields' option in frame control?

I think my confusion comes from not really understanding the difference between HDV and ProRes. I'll look into that!

Many thanks


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Shane Ross
Re: Converting NTSC Apple OpenDML JPEG 24fps material to use in an HDV 1080p25 timeline?
on Dec 9, 2013 at 7:55:03 pm

[huw wahl] "So you would suggest I use a ProRes sequence setting, and convert the footage to ProRes?"

I would keep the HDV as HDV, and either use a ProRes sequence, or change the render settings to render as ProRes.

[huw wahl] "I think my confusion comes from not really understanding the difference between HDV and ProRes."

ProRes is 1 frame is 1 frame. An I-Frame format. Individual frames. HDV is a GOP format...group of pictures. 3 real frames per second, with a bunch of pictures that estimate/guess (but very well) as to what the other frames might be. Look it up on Wikipedia.

Shane
Little Frog Post
Read my blog, Little Frog in High Def


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