According to a previous thread (http://discussion.autodesk.com/thread.jspa?threadID=539108), the audio offset value is specified relative to the video TC. But I'm seeing a very strange issue.
I have a clip with 0:00:00:00 Record TC and no audio slip. If I apply a positive audio slip of 10 frames, I get, as I would expect, a negative audio offset value. But I also get a negative TC, and the two cancel one another out! (I don't see this negative TC in the flame UI; it still says 0:00:00:00).
Is this a bug (maybe the "existing bug" mentioned in the thread), or am I misinterpreting how to use the TC and AudioOffset fields? (Everything seems to work as expected for negative audio slip; the TC stays the same and I get a positive AudioOffset.)
Here are some extracts from wiretap_get_clip_format
Original clip (video):
Kaiden[232]wiretap_get_clip_format -h 192.168.2.20 -n /stonefs/Test/Audio/H_-1463806974_S_1174350064_U_493184
[...]
MetaDataStream
NDF00:00:00:00Sun Mar 18 22:16:19 2007
Original clip (audio)
Kaiden[233]wiretap_get_clip_format -h 192.168.2.20 -n /stonefs/Test/Audio/H_-1463806974_S_1174350064_U_493184/audiostream_H_-1463798015_S_1174274179_U_300668
[....]
MetaDataStream
0
Clip with offset audio (video)
Kaiden[236]wiretap_get_clip_format -h 192.168.2.20 -n /stonefs/Test/Audio/H_-1463806974_S_1174350064_U_493099
[...]
MetaDataStream
NDF-00:00:10:00Sun Mar 18 22:16:44 2007
Clip with offset audio (audio)
Kaiden[237]wiretap_get_clip_format -h 192.168.2.20 -n /stonefs/Test/Audio/H_-1463806974_S_1174350064_U_493099/audiostream_H_-1463798015_S_1174274204_U_319043
[....]
MetaDataStream
-480480