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Audio sync issues when captured in Premiere.
I am having major audio/video sync issues that get progressively worse as the file goes along in the timeline. I imported the footage through Premiere, and brought it on the timeline once capturing was finished. As I am listening to it, the audio appears to be jumping forward. I will hear about 1 second of audio and then it will skip ahead. this happens through out the whole process. the end result is the audio ending about twice as fast the video. I thought it might have simply imported incorrectly, so I checked the file and the audio works great through QT player. It stays in sync through out the file. I checked the timeline settings, but the audio rate is the same as the file through which it was captured.
I have captured two videos now that this has happened. One with miniDV camera shooting in HDV and the other was a digital 8mm. Both captured through firewire. Anyone know what is going on?
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9 Replies
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What are your Project settings? (timebase, format)
What is the captured footage timebase?
What version of Premiere are you using?-Jeff
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All I could get was the sequence settings, so I am listing that now. I am not sure on which format you are interested in, so I will list a few.
Project sequence settings:
timebase:29.97 frames/second,
Editing mode: QuickTime DV NTSC,
Pixel Aspect Ratio: D1/DV NTSC (0.9091)
Fields: Lower Field First
Display Format: 30fps Drop-Frame Timecode
Audio Sample Rate: 48000Hz
Display Format: Audio Samples
Preview File Format: QuickTime DV NTSC
Codec:DV25 NTSCcaptured footage timebase:
Type: QuickTime Movie
File Size: 52.2 GB
Image Size: 720 x 480
Pixel Depth: 24
Frame Rate: 29.97
Source Audio Format: 48000 Hz – 16 bit – Stereo
Project Audio Format: 48000 Hz – 32 bit floating point – Stereo
Total Duration: 04;05;33;16
Average Data Rate: 3.6 MB / second
Pixel Aspect Ratio: 0.9091What version of Premiere are you using? CS5.0.4
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You’ve got a 52 GB file, and that’s pretty large making it susceptible to lag. Did you drop frames on capture? How fast are your drives? If you don’t have drives with a solid sustained throughput, that could cause audio lag. What happens if you capture smaller segments?
Kevin Monahan
Sr. Content and Community Lead
Adobe After Effects
Adobe Premiere Pro
Adobe Systems, Inc.
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Here is dropped frame infoVideo:
This movie appears to have DROPPED FRAMES.
There are 441560 frames with a duration of 1/29.97th.
There are 3 frames with a duration of 1001/10000ths.
There is 1 frame with a duration of 1001/7500ths.The HD is 7200 RPM 1TB. I haven’t tried capturing this video in a smaller segment, but the files works completely fine in FCP 5.1, as well as when I play in in QT. I captured a 10 minute video in HDV through firewire 800 with a similar result recently, and that HDV file worked fine in FCPX. All this leads me to believe that something in Premiere CS5.0.4 is the culprit. The odd thing is that I captured 2 videos that day, the first one is the 52GB file that does not seem to maintain audio, the second video is fine when I bring it on the timeline it is about 17GBs. Same type of tape, same camera, same sequence setting, different results.
I guess what I am really puzzled by is the fact that FCP can handle these files without any problem, so why is Premiere Pro not able to do the same?
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I wonder if the conforming got corrupted, which you can clean by cleaning the cache in the Preferences.
52Gig HDV file is pretty freaking huge! You are best to allow the confirming etc (shown as a yellow bar at the bottom right of the UI) finish before starting to edit that clip. It could take a little while, massive file size.
– JB
Jon Barrie
Adobe Video Solutions Consultant ANZ
Jon’s YouTube Tutorial Page
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Thank you Jon! That worked like a charm with one exception.
I went to the preferences, media, and then hit clean under the media Cache Database. Nothing happened. So I followed the path to where the files were actually stored in the Hard Drive. All the files were still there. So I decided to manually erase them myself. I quit Premiere Pro, threw away all the cache files, emptied the trash, and started Premiere back up. I patiently sat through the conforming process and then everything worked great! I am not used to using software that needs to conform like that, so I must have done things without realizing the need to let the computer think. I appreciate all the support!
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Thanks for reporting your solution there, it helps whenever others have issues to put the solution or fix into these threads so its easier to find 🙂
It doesn’t always create an issue if the conforming is not yet done before you start cutting, but as this was such a long clip I guessed this was the possible issue.
Cheers JB
Jon Barrie
Adobe Video Solutions Consultant ANZ
Jon’s YouTube Tutorial Page
follow Jon with twitter -
Jon B. to the rescue once again!
;>)
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Ah Jeff, Thanks mate. Just doing what I can when I can. Now that Adobe have me behind the curtain I’m pretty busy 🙂
Jon Barrie
Adobe Video Solutions Consultant ANZ
Jon’s YouTube Tutorial Page
follow Jon with twitter
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