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Fast Export from FCP X using Compressor?

I've switched from FCP 7 to FCP X and one feature which frustrates me is that the export is so slow. In FCP7 I could export a sequence as a QuickTime reference file, and (provided there was no rendering do to) it was finished in seconds. Under FCPX we can no longer export as a QT reference, so there's around 40 minutes to wait - not for any rendering or heavy CPU work, but just while FCP writes an enormous file to my hard drive.


And this is 40 minutes when I can't do any useful work with FCPX.


Would buying Compressor save me this time? If I export from FCPX via Compressor, will it export any faster? I'm hoping that FCP will shift all the work straight to Compressor, and let Compressor do the 40 minutes writing, while FCP is left available for me to do useful work.


Thanks in advance for any help on this one.


MST

iMac, Mac OS X (10.7.1), 12GB RAM

Posted on Oct 13, 2011 3:38 AM

Reply
33 replies

Oct 13, 2011 4:07 AM in response to Martin S Taylor

Martin the benefit I've found having Compressor 4 is that I no longer background render in FCX, unless I need to see a title animation play back smoothly, only then do I render that portion.


When my project is complete, I choose Share>Send To Compressor from FCX. Compressor then takes care of your rendering while you can keep working in FCX.


Now that's in a perfect world, however I and many others are experiencing some minor problems where FCX is chewing RAM and causing other apps to run extremely slow, including Compressor. Unfortunately till this gets fixed, my workaround is that I export a ProRes 422 from FCX, then use Compressor to transcode to whatever codec I need at the time.


Hope that makes sense.

Oct 13, 2011 4:16 AM in response to blimpmedia

It makes perfect sense, thank you.


I've found that if I export it as h264, although there's masses of heavy CPU work going on it's still quicker than writing the ProRes 422 file to disk.


I think I'm going to have to buy Compressor; I don't get problems with FCX chewing RAM so maybe I'll be spared this one.


(Though other bugs are driving me nuts: losing the playhead at certain magnifications - Jeez.)


MST

Oct 13, 2011 4:40 AM in response to Tom Wolsky

Sending to Compressor is in fact much, much slower, even slower than export to ProRes. You can of course continue to work in FCP, but that will only slow down Compressor further.

So I've heard, and that's clearly absurd. But I'm in no hurry to get the finished file (that can wait until overnight); I am in a hurry to keep using FCP. And with Compressor (as I understand it) I can send several files from FCP to Compressor for batch processing. Using FCP alone I have to wait until one file is written to disk before I can send another.

Oct 13, 2011 4:52 AM in response to Martin S Taylor

A more efficient workflow is to export a high resolution master, which you probably want to do any way, and take that to Compressor. Apply your multiple settings for compression and let it go. It really is better than using FCP while Compressor is calling it up for frame and audio mixing information. I have also found it creates odd audio dropouts.

Oct 13, 2011 5:00 AM in response to Martin S Taylor

Martin what Tom is saying is 100% correct, compressor is much slower, however if you want to transcode to H.264, what other option do you have.


Also the advantage in having compressor is being able to set up multiple or batch encoding.


Re: Transcoding for YouTube from FCX, I can't say I've tried it but from what I've read on other posts, there are many others experiencing problems.


My advice would be to export a ProRes422 from FCX, then use compressor to transcode to H.264

Oct 13, 2011 6:33 AM in response to Martin S Taylor

Speaking for myself also. I always export a master file as Tom suggests then use compressor to produce the desired final video.


If you take the time to set up a quickcluster or cluster if you have more than one Mac and configure compressor to use all the cores, transcoding goes extremely fast as opposed to export directly from FCPX.


I have an 8 core Mac Pro, and using compressor with the quickcluster configured blows through the transcoding so much faster than a direct export from FCPX. Last night compressor transcoded a 20 minute SD video to both DVD (mpeg2 video and ac3 audio) and to SD Apple TV in about 15-20 minutes. Not bad at all.

Oct 13, 2011 6:56 AM in response to blimpmedia

Sorry no, I don't. I just followed the instructions in the manual. And I can't check settings right now because I'm not at my home workstation. I will relay the settings I use this evening if you still would like to know.


I have gotten multi-computer cluster to work, adding my dual-core Macbook Pro to the cluster, but it didn't really increase the speed much since you lose time by moving large amounts of data back and forth over your network.


I usually just use the Mac Pro, as its own cluster (used Quickcluster), just be sure in one of the option settings to enable all the cores. If I remember Compressor installed with a default to just one core.


When you submit your job(s), be sure to submit it to the cluster, and not "This Computer"

Fast Export from FCP X using Compressor?

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