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XDCAM export - takes too long?

Hi all. MacPro 5,1 dual 2.66 6-core, 16 gig RAM, OS 10.6.8.


Working doing a weekly half-hour show for a major Chicago media heavyweight. We shoot in XDCAM EX, edit on an XDCAM HD timeline, and export a final QT movie as our deliverable. Final finished "master" is 22:10:00...and characteristically this takes around 45 minutes to output, after rendering and mixdown.


Is this considered normal? Acceptable? I've been doing this for a couple of years now, and it seems to be taking longer and longer...I don't recall our 25th show taking this long to export, but our 75th...sheesh, this is painful.


Anyone got any tips on how to speed things up? And as a corollary question, why when I "Export" do all my previously rendered segments turn red again?

Posted on Jun 12, 2012 2:32 PM

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Posted on Jun 12, 2012 3:14 PM

try changing your render settings to prores in sequence settings: render control.


And as per your other question, don't have a clue, but somethings wrong.

36 replies

Jun 13, 2012 8:59 AM in response to David Mclaine

Well, let's take it easy on the "you"...I'm working with what they've set up at, uh, this major midwest media conglomerate which sometimes used to use the appellation "World's Greatest Newspaper"...


We shoot in EX as our photogs use Sony EX3s, which only shoot EX; but edit in HD because (A) that's what they use over at the "mothership", where all our systems and tech support/management live; and (B) when feeding the show (playing out from a remote FCP station downstairs into some sort of Kona card and then over a video line to the mothership's facility), the Kona card in question couldn't work with an EX timeline.


As our local tech here said, "I didn't invent this system, I just work around it." So rather than expand this discussion to include an entire system-wide analysis, I'm focusing on my machine...specifically, why, within the parameters I'm given and have to use, the machine is getting slower.

Jun 13, 2012 9:25 AM in response to Mike Janowski

I have had the red bar appear across the entire timeline when I have done exports from XDCam/Ex material. I always assumed it was because of the long gop structure, it had to generate the gop cadence fresh from the start to end of the timeline for purposes of a creating the export. The red bar did/does not consistently appear, to the best of my memory.


2 comments:


1) Your exporting taking twice the real time duration of the timeline does not feel very far off to me, though it has been a while since I did a project that was 100% XDCam. I would start looking at your drive/storage configuration, capacity and how you are connected to the drives and see if you can get some improvement.


2) Having a green bar on the timeline does not mean "no rendering required to export" it means "no rendering required to display the video pretty close to real time in FCP". If you want the first option, the timeline needs to have the dark blue bar.


Can you click on a source clip in your browser and type command + 9 to get the clips item properties, and take a screen shot of the properties of the clip and post that here, or report them?

Then click anywhere on your timeline, and type command + 0 {zero} to see your sequence settings and take a screen shot and post that here, or report the sequence settings here?


Thanks


MtD

Jun 14, 2012 7:31 AM in response to Meg The Dog

User uploaded file

standard clip settings...except for the occasional png or jpg, this is what we use...


User uploaded file

and here's the sequence settings.


I'm calling this (the time it takes to export a show) a "problem" because it seems much slower than it used to be. Maybe I'm deluding myself. And looking at the drive/storage combo is great advice, Meg. I've told the powers that be from day one that mixing system and media drives is a no-no. But if someone here could say why this is, in concrete terms, that would give me (a poor day-rate freelancer in a big media conglomeragte world) some ammo to back up that point. Until then, all I can tell 'em is that this config can cause "anomalies"...of which, I believe, this is one.

Jun 14, 2012 9:18 AM in response to Mike Janowski

Well, as I kinda thought - you are shooting EX at 1920 x 1080 and editing into a 1440 x 1080 timeline - hence every frame of your timeline will need to be rendered (reconstructed, converted, rebuilt, resized. . . you get the idea) when you export - so your export is really the equivalent of tasking the machine to a show length conversion, in addition to whatever other heavy lifting the computer has to do rendering effects, color corrections, titles and transitions. As I said, given the task at hand, I don't find a 2:1 output time ratio all that surprising.


MtD

Jun 14, 2012 4:12 PM in response to Mike Janowski

Here's why I don't use a 1920x1080 square pixel sequence:


User uploaded file

Note the red line. No matter what the RT setting, I simply would not be able to see any video without rendering. Now...

User uploaded file

...in the 1440x1080 sequence, I get the green "Preview" line. Better. At least I can watch my edits!


But...as you might guess, I DO notice an increase in "picture quality" in the properly sized sequence...when viewing the Canvas at 100%, and on the external monitor, the 1920 sequence has a noticeably sharper image.


And, as you might also have guessed...

User uploaded file

when creating and editing in a 1920x1080 XDCAM EX sequence, I retain the sharpness...AND NO rendering is necessary.


just to recap, the reason "the mothership" decided to set things up this was was because our cameras ONLY shoot EX, but the feed process (we're in a remote location) would ONLY handle an HD master.


Thank you all for helping me sort though this. This calls for a pow-wow with the staff honchos. When I can demonstrate an improvement in quality AND an improvement in efficiency, I think it's time they informed the mothership that we need to change some things.

XDCAM export - takes too long?

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