Final Cut Pro X share fails with QuickTime Error -50

Hello!


I'm facing a very annoying issue when trying to share my project from Final Cut Pro X. It used to work perfectly fine but now I'm getting consistently "QuickTime Error -50" after FCPX exported about 10% of my project. This can be reproduced with other project as well - one time I was able to export by restarting my machine but not anymore.


My configuration is a Mac Pro early 2008 with a ATI Radeon 5770. The only recent change I did to my config was to upgrade my old graphic cards to the Radeon 5770: do you think this can be the cause of this error?


Thanks for any help,


Jean

Mac Pro, OS X Mountain Lion (10.8.3), Radeon HD 5770

Posted on Jun 2, 2013 9:32 AM

Reply
40 replies

Jan 19, 2014 8:55 AM in response to joshWL

As I recall, 10.0.8 had the most reports of failed exports of any version. 10.0.9 fixed a lot of those issues but it's too late to update; now you would be limited to 10.1. If you're in the midst of an important project, you might understandably choose not to update.


Since you're running Mavericks, one of the first things to check is whether the error is caused by App Nap. Checking Prevent App Nap for FCP.app may be all that is needed.


In 10.0.8, many of the problems were caused by a tendency for render files to become corrupted. So lots of advice was given on deleting project and event renders and exporting unrendered projects. Other times, however, the export fails were caused by problem media and could be fixed by replacing a bad clip. If the error provided a frame number, replace the clip at that location.


Russ

Feb 10, 2014 7:14 AM in response to Jean Bovet

Hello everybody,


today I had a similar problem. But I got it occuring at several different % of the export procedure.

I tried everything (even changed the RAM).


I found a dirty solution that worked for me, not sure everybody finds it helpful, but I write down

what I did in case somebody desparate will get helped by it...


1. I did a manual render all at my project.

2. I did a partial export of the 2nd part of the project's timeline.

3. I did a partial export of the 1st part of the project's timeline.

4. I did a complete export and voila!! It majestically worked!


Don't know why it worked, but it saved my life today!


Hope it helps!

Feb 16, 2014 3:33 PM in response to Jean Bovet

I was having the same problem and I tried a lot of the suggestions here and nothing worked. Then I simply created a new project in FCPX and copied and pasted the one that wasn't exporting -- this seemed to solve the problem. Is there a downside to this approach? I've deleted the original project but haven't emptied the trash yet. Should i be concerned the something at a deeper level corrupted that original project or is this sort of thing 'normal'?


thanks.

Feb 25, 2015 11:46 AM in response to Jean Bovet

For any future readers getting a "Video rendering error: -50" - I found that within multiple projects of mine any clips where I used the retime menu to set a specific duration (Retime> Custom... > Set Speed: Duration) would cause this error on export. If I go in and set the timing to one percent faster or slower, it fixes the issue. If you want to keep the same percent, just change it to something else, then change it back, and it should be fixed. (It will not work if you simply type the same percent in and hit enter, it has to be changed to something else once first.)

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Final Cut Pro X share fails with QuickTime Error -50

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