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rendering & exporting long sequence XDCAM footage to quicktime

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daphna inbar
rendering & exporting long sequence XDCAM footage to quicktime
on Mar 19, 2012 at 5:00:59 am

I am working with XDCAM footage and have a final sequence that is 3 hrs. long. I now need to make a self contained Quicktime and my system is reading it to be taking 3 days. My sequence setting is on XDCAM HD. This is crazy. Is there a better & faster way to do it? After I have the quick time I need to give it to a client so they can make a Blu Ray of this project.

Any help with this issue is greatly appreciated.


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Rafael Amador
Re: rendering & exporting long sequence XDCAM footage to quicktime
on Mar 19, 2012 at 12:12:03 pm

[daphna inbar] " After I have the quick time I need to give it to a client so they can make a Blu Ray of this project."
Then no reason to export to XDCAM HD. The codec is great for acquisition, but no for production.
Change the sequence codec to Prores. Rendering will be faster.
For better quality, set "Render all YUV material in high precision"
rafael

http://www.nagavideo.com


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daphna inbar
Re: rendering & exporting long sequence XDCAM footage to quicktime
on Mar 19, 2012 at 6:40:21 pm

Thank you rafeal for your reply.
Will I lose any HD quality if I render the project in Prores?
I guess my bigger concern is keeping the top quality for the blu ray dvd. And its the Quicktime that is taking enormeous amount of time. Do I need to compress my project? If so, what should be my setting? Right now I am just making a straight forward EXPORT-QUICKTIME with no adjustments to the setting. I am sorry to be so ignorant. This is my first time working with such big files.
Any help & advice is greatly appreciated. Thank you so much.


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Rafael Amador
Re: rendering & exporting long sequence XDCAM footage to quicktime
on Mar 20, 2012 at 1:43:37 am

[daphna inbar] "Will I lose any HD quality if I render the project in Prores?"
Not at all, but the opposite.
If the sequence needs to be rendered, going to Prores you will keep more quality that if you render to XDCAM and the rendering will also be faster.

Keep XDCAM only if you are just cutting raw footage, (no effects, resizing, graphics, etc.) so no rendering needed.
Avoid exporting with QT Conversion. Export QT with current setting and with the "Recompress all frames" unchecked.
rafael

http://www.nagavideo.com


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daphna inbar
Re: rendering & exporting long sequence XDCAM footage to quicktime
on Mar 20, 2012 at 6:08:51 am

What I don't understand is why 2 hr. of sequence is taking 2 days (47 hrs.) to make the quicktime movie? I have it set up just that way. The way you say is best. But the quicktime is reading 47 hrs. to make. What am I doing wrong here?


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Rafael Amador
Re: rendering & exporting long sequence XDCAM footage to quicktime
on Mar 20, 2012 at 10:54:37 am

The rendering time has too many variables.
FC will calculate the total remaining time on base of the actual rendering speed.
If in a clip you apply many effects/transformations (so the rendering is very slow) FC will calculate the remaining time up to that speed, even if the rest of the sequence has no effects/transformations.
Anyway, XDCAM is one of the slower rendering options available for being a LGOP codec.
rafael

http://www.nagavideo.com


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daphna inbar
Re: rendering & exporting long sequence XDCAM footage to quicktime
on Mar 20, 2012 at 6:03:55 pm

Rafael, thank you. I really appreciate greatly you taking the time to reply to my issues here.
OK. I understand about the render. What about the quicktime? I don't understand why 2 hr. sequence is taking 2 days (47 hrs.) to make the quicktime (self-contained) movie? I have it set up just the way you say is best. But the quicktime is reading 47 hrs.
Thank you, thank you for your help.


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Dave LaRonde
Re: rendering & exporting long sequence XDCAM footage to quicktime
on Mar 20, 2012 at 9:53:58 pm

[daphna inbar] "I don't understand why 2 hr. sequence is taking 2 days (47 hrs.) to make the quicktime (self-contained) movie?"

It's because of the XDCam codec you used for the footage. It's an inTERframe-compressed codec. It creates frames containing complete picture information only once every several frames. The compression scheme throws away the duplicated picture information on the frames in-between.

While the codec can play well from FCP, the conversion to Quicktime is different. Quicktime must re-invent the missing information on those in-between frames to create a movie in ProRes 422 -- an inTRAframe-compressed codec with complete picture information for each and every frame.

Exporting to another interframe compressed codec like H.264 would take even longer: Quicktime would rebuild the missing information, then throw some of it away again to go to H.264.

This is why, if you follow the threads in this forum, you always read about converting footage to ProRes 422 before you edit. It takes more time at the beginning, but saves a great amount of time at the end.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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daphna inbar
Re: rendering & exporting long sequence XDCAM footage to quicktime
on Mar 21, 2012 at 6:10:29 am

Dave,
I can't thank you enough for really explaining this to me. This is so frustrating and so time consuming I am just at a loss of how I can speed things up.
So just to go over how the process should be -
1. import footage in from card and have FCP pick the setting (XDCAM HD).
2. edit entire project
3. render project in prores setting
4. export-Quicktime & make self contained movie.

If you can confirm this, I would greatly appreciate it. Please consider the final project needs to go to bluray made on a pc platform.

Thank you so very much.


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Rafael Amador
Re: rendering & exporting long sequence XDCAM footage to quicktime
on Mar 21, 2012 at 8:34:05 am

[daphna inbar] "Rafael, thank you. I really appreciate greatly you taking the time to reply to my issues here.
OK. I understand about the render. What about the quicktime? I don't understand why 2 hr. sequence is taking 2 days (47 hrs.) to make the quicktime (self-contained) movie?"

Once the sequence is rendered exporting the "QT file with current setting" shouldn't take so long.
You are not exporting by QT COnversion, don't you?


[daphna inbar] "So just to go over how the process should be -
1. import footage in from card and have FCP pick the setting (XDCAM HD).
2. edit entire project
3. render project in prores setting
4. export-Quicktime & make self contained movie."


Right, but again: No QT Conversion.
If you use QT conversion (beside the quality lose), the project will be rendered again, even if the sequence has been fully rendered.
rafael

http://www.nagavideo.com


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daphna inbar
Re: rendering & exporting long sequence XDCAM footage to quicktime
on Mar 23, 2012 at 5:29:13 am

Thanks again Rafeal for your kind reply.

But I am still right where I started with the EXPORT- QUICKTIME still taking forever.
"recompress all frames" and "self contained movie" are both un-checked. This QT needs to play on pc platform.

Any further thoughts? Thanks so much.


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David Eaks
Re: rendering & exporting long sequence XDCAM footage to quicktime
on Mar 23, 2012 at 8:38:25 am

Just a thought, have you rendered the sequence? You can't export an unrendered timeline, if you try, FCP will render it first before beginning the export. One thing to keep in mind is that this render (done automatically when exporting) will not be saved in your sequence. Meaning that next time you need to export, it has to render again. So, always render before exporting.


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daphna inbar
Re: rendering & exporting long sequence XDCAM footage to quicktime
on Mar 24, 2012 at 2:08:15 am

Yes. Everything has been rendered prior to export.


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Rafael Amador
Re: rendering & exporting long sequence XDCAM footage to quicktime
on Mar 23, 2012 at 10:52:17 am

[daphna inbar] "recompress all frames""self contained movie" are both un-checked. This QT needs to play on pc platform."
SELF CONTAINED MUST BE CHECKED, otherwise you get a Reference movie that can be only played in your computer.
YOU DON"T WANT THAT.
rafael

http://www.nagavideo.com


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daphna inbar
Re: rendering & exporting long sequence XDCAM footage to quicktime
on Mar 24, 2012 at 2:10:52 am

Have done it with SELF-CONTAINED checked on as well but it's still the same.


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Rafael Amador
Re: rendering & exporting long sequence XDCAM footage to quicktime
on Mar 24, 2012 at 3:07:59 am

Well, it may be a performance issue.
Have you had a look to the "Activity monitor"?
How much CPU is working?
Which Read/Write speed shows your disks?
Where do you have the media files and where is the "Render folder"?
rafael

http://www.nagavideo.com


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