QT Files Corrupted Just By Opening Them?

[Ivan Myles]

– What is the codec?
– Did the files previously work in Premiere, and on the same computer?
– Are the errors occurring only in Premiere, or in QuickTime, also?
– Did you try uninstalling and re-installing QT?

[Jeffrey Fitzgerald]

The codec is an mp4 wrapped as a mov file.

All of the files opened fine previously in premiere. But now once they have modified and lose their thumbnail, etc. They are all playing the same way without video.

I did reinstall quicktime 7.

[Jeffrey Fitzgerald]

I did just place the OSX drive with my older one I had used a while back. The files actually play fine – so some good news.

So, here’s my question. How would I find what codecs are missing in premeire? Is there a way to compare both installs (old and new)?

[Ivan Myles]

You can see the codecs by trying to export a file in Media Encoder and checking what options are listed under QuickTime.

This update might help: Adobe Media Encoder CS6.0.1 for Mac

Also compare the QuickTime version numbers between your two installations. CS6 officially supports QuickTime 7.6.6 (link). If you are using a later version try installing 7.6.6 instead.

You could also check what applications are different between the two hard drives. Did you load any non-standard codec packs (x264, other)? Try uninstalling any video players other than QuickTime (e.g. VLC, etc).

How was the 40GB MOV file created? Try to make a MOV/H.264 copy rather than MOV/MP4. Also, if the file will be edited it is better to use I-frame only (key frames every 1 frame). Alternatively, try a different codec.

[Walter Soyka]

[jeffrey fitzgerald] “I have a folder full of previously working quicktime files. I have one critical file that stopped working today after I tried to load it into Premiere Pro CS6. The files all still play fine in VLC but I cant export the same broadcast quality file there. Plus it’s a 40GB size. “

Premiere has a preference to Write XMP ID to media files on import [link]. This is a simple piece of metadata — a unique identifier — injected into the media file. Of course, this isn’t supposed to break your media, but I personally don’t think it’s great design for an NLE to write to source footage at all.

I’d turn off that preference and submit a bug report [link].

Walter Soyka
Principal & Designer at Keen Live
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
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[Jeffrey Fitzgerald]

Thanks for your help.

I actually think I know where the problem lies, but dont know how to address it. I have noticed that in my directory of video files, the ones not working are the only ones not showing an access control list in the permissions. They are missing the @ sign which means they do not have extended permissions.

When I do a “ls -la@e” to show the extended permissions I see the files are blank. Example below:

-rwxrwxrwx@ 2 jeffrey staff 6004801024 Jan 10 17:30 STUDIO (PGM).mov
AudioIndex 328380
NTK_Audio_Level 8
TCXD_DDR_info 68
VideoIndex 236216
-rwxrwxrwx 1 jeffrey staff 45655327232 Jan 11 13:06 STUDIO CAM1.mov

So this must be related. I just dont know how to restore this video index data. But PPro CS6 has definitely refused to load the files and in essence renders them as damaged. But CS 5 loads them fine.

Any ideas?