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Playback of XDCAM files in timeline

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Nel Shelby
Playback of XDCAM files in timeline
on Jan 28, 2011 at 7:21:47 pm

Hi,

I typically work with HDV 1080i files and now I am working with XDCAM 1080i60 files shot on the EX1. My timeline is set to XDCAM 1080i60 and I am rendering like crazy. I make 1 edit and I have to render every time so that it actually plays back. Otherwise it will stop and say "turn off unlimited RT, increase speed of your drives etc" Is there an easier way to make this happen. I have about 1TB of footage I am working with along with about 100GB of SD footage.

I would appreciate any help. I am working on an 8 core processor with 12GB of RAM.

Thanks!


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Rafael Amador
Re: Playback of XDCAM files in timeline
on Jan 28, 2011 at 7:38:37 pm

[Nel Shelby] "I typically work with HDV 1080i files and now I am working with XDCAM 1080i60 files shot on the EX1. My timeline is set to XDCAM 1080i60 and I am rendering like crazy."
make sure that your Sequence is conformed to the footage.
Then, change the sequence codec to Prores.
rafael

http://www.nagavideo.com


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Nel Shelby
Re: Playback of XDCAM files in timeline
on Jan 28, 2011 at 7:58:28 pm

Thank you I will try that.


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Nel Shelby
Re: Playback of XDCAM files in timeline
on Jan 28, 2011 at 8:10:54 pm

Thank you that completely made rendering so much faster. you just saved me sooooo much time.


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Rafael Amador
Re: Playback of XDCAM files in timeline
on Jan 28, 2011 at 8:29:35 pm

Nel,
All these GOPs based format are great for acquisition, but not for editing.
Render to XDCAM only if you need to deliver on that format.
If you are applying effects or putting graphics, it would be good for you to set "Render in High Precision".
It would take a bit longer, but the picture would be benefited.
rafael

http://www.nagavideo.com


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Dennis Radeke
Re: Playback of XDCAM files in timeline
on Jan 29, 2011 at 12:01:43 pm

Rafael, respectfully I would say this...
"All these GOPs based format are great for acquisition, but not for editing in Final Cut Pro."

Many other tools can edit GOP based material without difficulty. And the reality is that most new camera formats/codecs are employing GOP based material because it allows them better image quality at a lower data rate. I'm not an expert but I would guess that this opens up options for them in the camera design.


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Rafael Amador
Re: Playback of XDCAM files in timeline
on Jan 29, 2011 at 11:41:21 pm

Hi Denis,
You can edit GOPs stuff in FC, no problem (99.99% of my work is with EX and XDCAM HD-422), what I mean is that is a PAIN to render to any of these codec.
With any I-frame codec you have only to process 1 frame at a time. With any GOP codec you can never process only 1 frame. You process full GOPs. You need to decompress the full GOP even just to watch 1 frame.
Even if you are just cutting and exporting with no re-compression, every GOP where the cuts occurs needs to be rebuilt. This happens even when making Reference Movies. Curiously, being just Reference Movies you get HUGE size compared with any I-Frame stuff Reference Movie.
To render to ani I-frame codec cuts the processing time to a fraction.
Cheers,
rafael

http://www.nagavideo.com


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Jeremy Garchow
Re: Playback of XDCAM files in timeline
on Jan 30, 2011 at 1:01:21 am

[Dennis Radeke] "And the reality is that most new camera formats/codecs are employing GOP based material because it allows them better image quality at a lower data rate."

Respectfully, I'd challenge this.

It allows everything to be really cheap at the expense of image quality.



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Rafael Amador
Re: Playback of XDCAM files in timeline
on Jan 30, 2011 at 9:44:22 am

[Jeremy Garchow] "It allows everything to be really cheap at the expense of image quality.
"

I second this. GOPs makes sense only for economic reasons.
rafael

http://www.nagavideo.com


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Gordon Gurley
Re: Playback of XDCAM files in timeline
on Jan 29, 2011 at 7:13:47 am

Hmm, sounds like something is set wrong. I can edit XDCAM HD 108060i in multicam on a 4 core MP without rendering. Need more info: drives, etc.

Gordon Gurley
Director of Operations
Stanford Video


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Rafael Amador
Re: Playback of XDCAM files in timeline
on Jan 30, 2011 at 5:10:59 pm

I work with XDCAM HD from the NANO-flash some times with 280Mbps data rate.
I work from an external eSATA Raid 0.
BUT, having your system/FCS optimized, is as important as the hardware you are using.
Permissions and clean directories is the key.
rafael

http://www.nagavideo.com


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