Firstly, it's worth noting that there is a difference in behaviour in the Link/Unlink function.
If you take an unedited AV clip, the audio and video are (my term) integrated, indicated by the dotted dividing line and all buttons/options are available.
If the audio and video are unlinked, they are no longer integrated, the dotted line changes to a space, buttons/options are only available if possible (ie no audio functions if the video is selected) as one would expect for independent clips and contextual editing.
If no changes are made and the AV are re-linked they will also be re-integrated, if however any changes are made, they are re-linked but not re-integrated. So they are re-linked as a single entity but not re-integrated and some functions are therefore still unavailable.
The question is therefore, what constitutes a change sufficient to trigger this de-integration if the user hasn't done anything?
I don't know definitively, but PD12 now allows audio editing to 1/10th frame level and by a simple experiment with the Nature clip a 1/10th frame time reduction on the unlinked audio prevents re-integration but allows re-linking,
To my mind, a 1/10th frame is "quite small" (approx 0.0035 secs @30fps or 0.0016secs @60fps) and certainly cannot easily be visually (or aurally) obvious in normal editing, so I wonder if somewhere along the line something very small is happening, perhaps as playsound has indicated to do with a particular or some transitions, which throws the audio out and triggers the issue?
Since it hasn't happened to me (so far) it's a bit difficult to test any further but maybe the observations will help?
Cheers
Adrian
This message was edited 2 times. Last update was at Nov 02. 2013 02:54
Confucius
AMD Phenom IIX6 1055T, win10, 5 internal drives, 7 usb drives, struggling power supply.