Failed to open audio extractor-Error Opening asset

X2Pro version 3 (with uncompressed audio in an MP4 file support) has just been released in the app store as a free upgrade

Hi,

Editing the fcpxml should be a last resort. First try relinking to renamed M4V files or relinking to optimised/proxy versions of the clips.

If that doesn't work, and you definitely have M4V or optimised/proxy versions of all your clips, we can then try editing your fcpxml.

Hey there. I've experienced the same problem when trying to export an AAF for sound mixing. I shot my film with Sony a7. I tried to follow y Graeme's instructions, but can't do the edit of the fcpxml. Can I get some help, please?

The problem is that some newer Sony cameras create MP4 files that contain LPCM audio which is a wrapper/codec combination that is not supported by the QTKit framework. Both QuickTime Player 7 and X2Pro use the QTKit framework which is why they both have a problem with the file.

Until this problem is resolved in X2Pro, we have a couple of ways to work around the issue. If you decide to try these workarounds, make sure that you make backups of both your project and you media files first.

• Rename the MP4 files to M4V and relink to the M4V files.
• Create transcoded ("optimized" or "proxy") versions of the MP4 clips using FCP (you may already have optimised/proxy versions if you chose to create them on import) then either
  • Make copies of the transcoded versions and relink to the copies (do not relink to the optimized/proxy versions where FCP creates them, you must relink to copies of them)
  • Edit the fcpxml file in a text editor to point to the optimized/proxy versions rather than the original media (we can help with editing the fcpxml if you can confirm that you have created optimized/proxy media and you provide your fcpxml).

Hi there, thank you for the quick reply. Yes I can reveal in Finder and it plays with QT10 but not QT7

Please could I have urgent help. I have MP4 files shot using the A7s (s-log). All clips work fine in FCPX however do not open with QT7. The of course open fine with QT10

The error message is saying that X2Pro is unable to open a file called "CES15_02_A702C0014.MP4" that is supposed to be on a drive called "515" in a folder called "FOOTAGE AUDI LV CES 15/CES15_02_A702/M4ROOT/CES15_02_A702_CLIP/"

Have you used Finder to check whether the file is really there? If it is, can you play it in QuickTime Player?

Writing AAF file
Adding assets to AAF file
Adding essence for asset [CES15_03_A701C0001] to AAF file
Opening audio extractor for portion 0 of asset [CES15_03_A701C0001]
Failed to open audio extractor
Error Opening asset (/Volumes/515/FOOTAGE AUDI LV CES 15/CES15_03_A701/M4ROOT/CLIP/CES15_03_A701C0001.MP4) with QuickTime (An invalid sample description was found in the movie.) [-2041] []

Suggestion: Please ensure that:
- the media file has not been moved or deleted;
- you have added its location to the Media Locations in preferences;
- the media file can be played using QuickTime player.

No AAF file has been generated.