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transcode 4k mxf files?

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Jordan Kole
transcode 4k mxf files?
on Oct 27, 2017 at 3:30:14 pm

Planning a shoot in 4k with a Sony X70 camera. The files come off the camera encoded as .mxf.

I'm going to be editing on a pretty fast PC running Adobe Premiere.. May also do image stabilization in Adobe AfterEffects

What is the best workflow for editing? Should i transcode to an editing codec and if so which one?

Can Premiere edit in .mxf? I don't think so but not I'm not sure!

Final export format will be .mp4 to be played back on media players.

Thank you!!


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Dave LaRonde
Re: transcode 4k mxf files?
on Oct 27, 2017 at 5:34:43 pm

MXF merely denotes the media container, as does "Quicktime". What is the codec to which it will record?

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Jordan Kole
Re: transcode 4k mxf files?
on Oct 28, 2017 at 3:41:55 pm

I didn’t know this!

The options are XAVC or AVCHD.. which should I select?


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Ole Kristiansen
Re: transcode 4k mxf files?
on Oct 27, 2017 at 6:06:35 pm

Hi Jordan

XAVC uses the MXF (Material eXchange Format) file wrapper in
both 4K and HD files, and the MP4 file wrapper for its proxy files.
These are the preferred file wrappers for professional digital video
and audio material.



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greg janza
Re: transcode 4k mxf files?
on Oct 27, 2017 at 6:26:03 pm

[Jordan Kole] "Can Premiere edit in .mxf? I don't think so but not I'm not sure!"

Not sure why you think Premiere would have a problem with mxf. The key to your being able to have a smooth workflow with sony mxf files is having a fast CPU, a qualified GPU, plenty of RAM and a fast media storage device, i.e, a raid. If you have all of those items in place the 4k workflow is without issue.

I Hate Television. I Hate It As Much As Peanuts. But I Can’t Stop Eating Peanuts.
- Orson Welles


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Jordan Kole
Re: transcode 4k mxf files?
on Oct 28, 2017 at 3:42:55 pm

I didn’t know this! So after I shoot i bring the contents of the memory card to the desktop and edit those files directly without transcoding?


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greg janza
Re: transcode 4k mxf files?
on Oct 28, 2017 at 4:26:23 pm

You can't edit 4K mxf if you put the media files on the desktop. You have to put all media on an external drive or raid. If you use the proxy workflow you can put the media on any fast drive and if you want to skip the proxy workflow and edit the 4K files directly you'll need a drive or raid that has fast thruput. Sony's list of xavc recording formats states the data rates of each setting.

I Hate Television. I Hate It As Much As Peanuts. But I Can’t Stop Eating Peanuts.
- Orson Welles


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Jordan Kole
Re: transcode 4k mxf files?
on Oct 28, 2017 at 4:52:48 pm

Ok cool! How do you do the proxy workflow? Does premiere generate proxies itself?


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greg janza
Re: transcode 4k mxf files?
on Oct 28, 2017 at 4:58:03 pm

google is your friend. There's endless info and tutorials on the proxy workflow.

I Hate Television. I Hate It As Much As Peanuts. But I Can’t Stop Eating Peanuts.
- Orson Welles


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Olivier Prudhomme
Re: transcode 4k mxf files?
on Nov 3, 2017 at 3:20:53 pm

Read this
https://blog.frame.io/2017/03/20/premiere-pro-proxies/

Los Angeles - TV Promo Editor - FCP - AVID


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