QT problem in mavericks! please help!!!

[kasruesao]

So I just upgraded from Snow Leopard to Mavericks. I used to be able to trim videos in QT (not the QT 7 in Utilities) and save them. But now when I try to do it, it gives me the message, "The operation could not be completed" Can someone please help? However, when I try to trim a MP4 file, it saves. I'm so frustrated.



Is there any way to downgrade to the QT that was default with Snow Leopard?

 

[MisterMe]

OK. What are the formats of the video and audio tracks of your problematic files?

 

[kasruesao]

OK. What are the formats of the video and audio tracks of your problematic files?

Video
H264-MPEG-4 AVC (part 10) (avc 1)

Audio
A52 Audio (aka AC3) (ms)

I got this from the properties of one of the videos I'm using in VLC.