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Audio Sync Issues Capturing from Sony DSR-PD150
Hello all,
I shot an interview this weekend with a DSR-PD150. The interview took up the better part of a 60 minute Mini-DV tape (~55 mins). Last night, I went to capture the tape to FCP… I watched from start to finish as the interview played back and captured, seemingly without any hiccups. I then opened the clip in my viewer to begin editing, and I noticed that about 6 or 7 minutes in, the audio skipped and went out of sync. Thinking that this might be an isolated hiccup in the audio track, I cut and manually pulled the audio track up about 10 frames until it was again sync with the video. As I continued reviewing the clip, the same thing happened again. I jumped farther into the clip and noticed that the video and audio tracks were slowly getting further out of sync.
Any thoughts?
I am certain that I shot and captured 16-bit, so I don’t think there is a compatibility issue there. I read something about possible issues with large file sizes, but I’m not sure how that would affect audio sync.
I’d really appreciate any help, as fixing this issue manually will be a huge drain on my time and energy. Not to mention if it happens again with future interviews.
Thanks
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7 Replies
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Capture all raw footage in “under 10 minute” (or “under 7 minute” ) clip lengths.
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Thanks for your response, I will try this.
Is there a way to set FCP to break up the capture into smaller clips automatically, or do I have to sit and manually escape from the capture every 7 minutes?
Just curious, do you have any idea why this is a problem?
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I tried capturing in smaller increments, as you said, but still no luck. Does this mean there is an issue with the tape? I just tried loading another tape that was shot on the same camera yesterday, and had the same problem. I don’t understand how it could be a problem with the tape when it plays back perfectly on the camera!
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[Langley Bowers] “do I have to sit and manually escape from the capture every 7 minutes? “
Type-in IN and OUT points for the entire tape that are for durations of 7-10 minutes BEFORE you capture.
Then. BATCH CAPTURE the entire list.
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[Langley Bowers] “I don’t understand how it could be a problem with the tape when it plays back perfectly on the camera! “
32kHz 12 bit?
48kHz 16 bit?
Although I have never has problems,
even with mismatched audio sampling between the tape and the timeline. -
This was one of the first things I looked for – 48kHz, 16 bit for both.
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Sooooo… I just found out some interesting information about the PD-150. It natively shoots DVCAM at 48K, and when switching to DV, it defaults to 32K. You can go back in and override the default to record 48K DV, which I did. However, when I did this, an “NS” showed up next to “48K” on the display, which I just found out means “non-synchronous”. It seems crazy that this would be a common enough occurrence to have such a prominent place in the display.
Anyway, does anyone know if there is a way to work around this in Final Cut?
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