Thanks Tom.
That's a nice pickup - QuickTime X incorrectly reporting the frame rate of the clips.
I'm going to attempt to sum up what we know thus far:
1. The AVCHD clips from the AF100 camera (and other Panasonic AVCHD cameras) that misbehave are: 1080p 25 & 1080p 30. The other frame rates and resolutions appear to behave.
2. The problematic clips DO display correctly in QuickTime 7 and in Compressor 4.2.
3. The problematic clips DO NOT display correctly in QuickTime X on some systems (black footage with audio only).
4. QuickTime X incorrectly reports the frame rate of these AVCHD clips. (e.g. 1080p 25 clip is reported as being 24.75 fps)
5. On some FCPX systems the clips appear consistently black and only audio plays. On these systems, transcoding the footage to Optimised or Proxy results in a clip that is black, has no audio, and is sometimes Zero Bytes in size in the finder.
6. On some FCPX systems the clips behave inconsistently, sometimes flickering or fading to/from black. On these systems, transcoding the footage to Optimised or Proxy usually works, but sometimes doesn't (resulting in a black clip). On these systems sometimes sharing/exporting a project containing original AVCHD footage fails, especially if the clips have transitions or effects. Sometimes sharing/exporting succeeds if there are no transitions or effects applied to the AVCHD clips.
7. On almost all systems the appearance of the clip thumbnails in the browser can fluctuate from normal to partially black, to completely black.
8. Some users have reported that changing their 1080p project to 720p enables them to export their project, but this doesn't work for others.
9. On some systems problematic clips do not display as expected in the finder and cannot be previewed from the finder.
If I've forgotten any info please chime in.
Just going to finish by posting a screenshot of my finder which shows how the problematic clip's thumbnails don't display correctly and how the transcoded clips result in files that are zero bytes in size.
