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MediaMangler + copied sequence = lost audio sync! Blue bars on audio?
Finished (yeah right) a project, used MediaMangler to copy the master sequences into a new project (with media, render files, :01 handles) onto an external drive. Flash-forward some weeks, client loved it so much, top brass had to revise it (of course), so file-copied the MM-created project & all folders back to online RAID. With the exception of a freeze-frame from a rendered graphic, everything connected & appeared fine. But, playing through, any of the interview audio clips that had a filter applied (Apple EQ) had a blue bar at the top of the clip in the timeline – not ABOVE the timeline, where “render status” bars appear, but on the top of the clip itself. AND, those clips were out of sync with their interview video (by a second or so)! WTF? Even stranger, almost all the VO audio clips had the same blue bar, even though there were no filters applied, and – the audio appeared to be IN SYNC. I say in sync because even with very tight VO edits, nothing was truncated/upcut, and it lined up to where it should be. When the audio filters were deleted from the clip, audio was back in sync. Obviously an audio render file issue w/ MM.
But I’ve never seen/noticed these blue bars on the top of audio clips before – what do they indicate? Couldn’t find any mention of them in searches.
So what gives? I do a very simple MediaMangler operation, and my project comes back corrupted. Oh yeah, during the recent Apple FCP5 seminar I asked the demonstrator if MM had been fixed in 5 and his answer was “it still has problems…”. Great. So why doesn’t Apple officially change the tool’s name to Media Mangler? It certainly would be truth in advertising.Bob Woodhead / Atlanta
Quantel-Avid-FCP-3D-Crayola
G5 DP 2G, 10.3.4, 3.5GB RAM, FCP 4.5, Aja IO, Huge 320R [raid3] -
4 Replies
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The blue bars in the audio clips indicate that their khz isn’t the same as the sequence’s setting… could be why you are out of sync too…
Jerry
Apple Certified Trainer
Author: “Jerry Hofmann on Final Cut Pro 4” Click here
Dual 2 gig G5, AJA Kona SD, AJA Kona 2, Huge Systems Array UL3D
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Aha! Now where *is* that info actually written? Grin… maybe I need to buy your book, as it’s NOWHERE in the FCP docs! “The Secret Files of Jerry H… tonight on FCP Mysteries”.
But here’s the fun part – while the VO was indeed 44kHz in a 48kHz timeline (and showing the bars as you said), all the interview audio (whose EQ’d parts lost sync) was all 48kHz.
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I’ve had this problem virtually everytime I use MM, audio sync loss. I re-render the offending clips (ones with audio filters applied) and everything ids fine. Not an explanation but a way to make it work.
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maybe MM corrupts some headers… try to look on files with pro audio software, like iTunes =)
All the best, sorry for my english
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