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What exactly is time stamp?
What exactly is time stamp in project media and what is the difference between time stamp and modified date/time of media file?
Why Vegas doesn’t recognize time stamps from most media files but offers a feature “Lay Out Tracks Using Media Date/ Time Stamp”?
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3 Replies
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[Grzegorz Kwiatkowski] “What exactly is time stamp in project media and what is the difference between time stamp and modified date/time of media file? “
The timestamp is recorded into the data stream by the camera and is syncronized with the camera’s clock. The modified date/time of a media file is the time at which the media was written to the disk or copied to the PC. Obviously the file can have only one date/time but the media has a timestamp for every frame of video.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
If you create a document on say, the 12 of November 2010, and later open that document and revise, add to it, or make changes to it in any way that is different from the original; then your editing program will record the date that you made the last modification. IE. date modified.
So, date modified doesn’t change when copying or moving. What’s more it’s synchronized with camera clock, so it could be used to sync media files (DSLR video files for example).
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[Grzegorz Kwiatkowski] “So, date modified doesn’t change when copying or moving.”
It would be great if this were true but it’s not the behavior that I’m observing. For example, I shot some footage on 2012-06-30. I know this because that’s the filename of the video and my camera uses a timestamp as the filename. On my hard drive, the Date Created is 2012-07-23 and the Date Modified is 2012-07-01 (22 days earlier!). Neither of them reflect the actual date of the recording. So I don’t think Date Modified is a reliable timestamp for video processing.
Another fact that makes this untrue is the FAT32 filesystem of all media cards. Since they can’t record more than 4GB at a time, the Vegas Device Explorer needs to stitch multiple 4GB files together to obtain a 32GB file that represents the actual recording. This would reset the Date Modified as well as the creation date.
I just don’t see this working reliably.
~jr
http://www.johnrofrano.com
http://www.vasst.com
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