Replies – Forums – Terry Grace

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Terry Grace
June 11, 2009 at 8:24 pm in reply to: Audio Drift Dilemma — Makes no sense, but VERY serious nonetheless

This material was shot with the Canon 5D Mark ii and am now thinking that (as rumored) the camera actually shoots 29.97 even though the metadata states 30 fps. This corresponds exactly to my 8 frame loss. So even with all settings matched at 30 fps, the output of Soundtrack Pro or the input into FCP is reading the material as 29.97. I tried exporting the movie as 29.97 but there is still a sync issue. Very weird. I read elsewhere that people have changed the metadata of the original clips (in Cinema Tools) to 29.97 and the audio drift is gone. Too bad I didn’t find that info out earlier.
Terry Grace
June 11, 2009 at 1:50 am in reply to: Audio Drift Dilemma — Makes no sense, but VERY serious nonetheless

Further to my previous message — I just re-imported the audio that was exported from STP back into STP… And it is exactly the length that it should be. So I confirm that something weird is happening when importing back to FCP.
Terry Grace
June 11, 2009 at 1:15 am in reply to: Audio Drift Dilemma — Makes no sense, but VERY serious nonetheless

I am having exactly the same issue. Sequence setting: ProResHQ 1920×1080 30 non-drop 48khz 16bit audio. My sequence is 4:30. Settings in Soundtrack Pro are the same. After sending to Soundtrack Pro, duration of the sequence in STP matches sequence in FCP. But after exporting and either having STP send it to FCP or importing the audio myself, the exported tracks are now 8 frames shorter. It is definitely a progressive sync drift. This is driving me crazy.