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April 13th, 2013, 03:40 AM
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#1 |
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Major Player
Join Date: Dec 2005
Location: Melbourne, AUSTRALIA
Posts: 735
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Audio files do not sync with DNGs
Hi all,
I've just shot a short with this camera and am in the process of syncing the video to the externally recorded audio. Lining up the WAV file with the transcoded video (both Cineform RAW and MOV out of DaVinci produces a video file that is a frame shorter than the audio file that is created. Is that normal or is there a discrepancy in the transcode? I have noticed that when I lay the video into Premiere, it tells me that, for example, the duration of a clip is 0:01:45:20 (one minute 45 seconds 20 frames) but the start time and end time are listed as 0:00:00:00 and 01:45:19. So a discrepancy of one frame. I can't figure this out. I certainly don't want to start my edit only to discover that I am not editing with frame accuracy. Thanks for your help, -- John |
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April 15th, 2013, 12:58 PM
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#2 |
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Major Player
Join Date: Oct 2005
Location: NYC
Posts: 658
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Re: Audio files do not sync with DNGs
please let us know -
J |
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April 16th, 2013, 02:48 PM
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#3 | |
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Inner Circle
Join Date: Sep 2002
Location: Vancouver, British Columbia (formerly Winnipeg, Manitoba) Canada
Posts: 4,088
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Re: Audio files do not sync with DNGs
Quote:
00:00:00;00 to 00:01:45;19 would have a duration of 1m45s20f
__________________
Shaun C. Roemich Road Dog Media - Vancouver, BC - Videographer - Webcaster www.roaddogmedia.ca Blog: http://roaddogmedia.wordpress.com/ |
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April 16th, 2013, 02:53 PM
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#4 |
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Inner Circle
Join Date: Nov 2005
Location: Lowestoft - UK
Posts: 4,044
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Re: Audio files do not sync with DNGs
That's what I thought - just semantics of numbering. A bit like digital addressing, 0 to 254, or 1 to 255 - same thing!
You can't really have a frame zero - the first frame has to be frame 1, doesn't it! |
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April 16th, 2013, 03:05 PM
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#5 |
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Inner Circle
Join Date: Sep 2002
Location: Vancouver, British Columbia (formerly Winnipeg, Manitoba) Canada
Posts: 4,088
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Re: Audio files do not sync with DNGs
The frame 0 is ACTUALLY frame 1 but then the whole concept of "backspacing one" to get the elapsed time would come into play...
Ugly, I know...
__________________
Shaun C. Roemich Road Dog Media - Vancouver, BC - Videographer - Webcaster www.roaddogmedia.ca Blog: http://roaddogmedia.wordpress.com/ |
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April 16th, 2013, 06:21 PM
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#6 |
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Major Player
Join Date: Dec 2005
Location: Melbourne, AUSTRALIA
Posts: 735
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Re: Audio files do not sync with DNGs
I guess I understand, but why then am I getting longer duration video files than sound files?
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April 16th, 2013, 06:24 PM
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#7 |
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Inner Circle
Join Date: Sep 2002
Location: Vancouver, British Columbia (formerly Winnipeg, Manitoba) Canada
Posts: 4,088
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Re: Audio files do not sync with DNGs
If you were in NTSC land, I'd say it was a Drop Frame versus Non_Drop Frame issue but you are in PAL land...
UNLESS you recorded in 23.98 instead of 24...
__________________
Shaun C. Roemich Road Dog Media - Vancouver, BC - Videographer - Webcaster www.roaddogmedia.ca Blog: http://roaddogmedia.wordpress.com/ |
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