Sony A7S Audio

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

Unfortunately I don't have a timeframe.

I know that it is going through development at the moment, and will have to go through QA after that. Once it has passed QA, it will need to be submitted to Apple for approval before it becomes available in the app store, which can also take quite a while.

Basically I would expect it to be a few weeks at a minimum.

Thanks for your quick answer and the workaround.

Waiting for the new version :) any timeframe?

Sorry you are having this problem. This is a known issue and we hope to have it fixed in the next release of X2Pro.

The problem is because X2Pro uses Apple's QTKit framework to extract the audio, and QTKit doesn't like uncompressed audio in an MP4 file (which is what the A7S creates). QuickTime Player 7 is also not able to open/play the clip because it too uses QTKit. QuickTime Player X uses Apple's AVFoundation Framework (which does support uncompressed audio in an MP4 wrapper), so it is able to play the file, as you have seen. X2Pro will soon be moving to use AVFoundation for most audio extraction so it will support the A7S created clips without any workarounds.

For now, a workaround that some users have reported success with is to backup their project and media, change the file extension of all their A7S clips from MP4 to MOV and then tell FCP X to relink the clip used in their project to those MOV files. After doing this, and exporting a new FCPXML, X2Pro should be able to process it. This works because an MP4 is basically a MOV, and QTKit is happy to process MOV files with uncompressed audio.

Hello,

I am trying to build an AAF with sound from a Sony A7S.
FCPX 10.2.1

On every sound file coming from the A7s I get the following error message:
(An invalid sample description was found in the movie.) [-2041]

No AAF was created..

I tried this on multiple sequences with A7s images and sound on different libraries.

Only if I deselect all audio coming from the A7s files in the Timeline (project) I am able to build an AAF.

It seems that X2Pro does have an issue handling the Sony A7S Audio. When I open the files in Quicktime there is no problem.


Any fix please?

Thank you for an answer and your help!