Camcorders forum


Retrieving date time stamp from canon sd card

by sky1log2 / September 11, 2012 4:23 AM PDT

After taking video from a Canon fs200 onto an sd card I took the card out and renamed the file on my laptop onto the card. I then placed the card back into the camera and the camera now wont recognize the video. I can see the video is there but retrieving the date and time stamp does not sound possible.

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Clarification Request
Does not sound like a supported feature.
by R. Proffitt Forum moderator / September 11, 2012 4:27 AM PDT

That is, moving content to the PC is pretty supported. Alter the card's contents and all models will not play this any longer. That is, this is proper and for now, no maker appears to detail how to put video on a card and have it play on the camcorder.

Nothing really busted here. Just not a feature you find on today's common camcorder.

Once the video is on the PC, the date/time is usually embedded in the video data. Some players show it, some don't.

All Answers

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Again, I agree with Bob.
by boya84 / September 11, 2012 7:26 AM PDT

All is behaving as designed.

When a flash memory card goes into a camcorder (or still image capture device like a point and shoot or dSLR), the manual says step 1 is to format the card in the camcorder. The camcorder's embedded "operating system" sets up the folder directories for stills, moving images, etc... and a proprietary database index that keeps track of the media file numbering system (its version of the file names), where the files are located on the flash memory media and a bunch of other information that only the camcorder can use within its "operating system". When you renamed the file, the proprietary index system lost track of it. If you rename the video file back to what it was, then the index file might recognize it and all will be back. It is possible that the proprietary file system will not recognize the file even if you return to the original name because of the various date/time stamps you mentioned that also are modified by the computer's operating system.

The camcorder is not a "personal media player" - it is designed to capture and store - and playback what it captured and stored. Changing the name of the file as you did means you changed what the camcorder captured and stored.

Link to the manual

Initialize the memory card in the camcorder: Page 31 and 32.

Some of the data tracked by the index file: Page 40 (Select scenes by recording date), Page 41 (Selecting the playback starting point from the movie timeline), 42 ("Index screen")... there are other references to datacode and accessing files...

Page 77: "IMPORTANT: Do not access, change or delete folders and files in the camcorder directly from the computer as this may result in permanent data loss."

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oops... forgot...
by boya84 / September 11, 2012 7:29 AM PDT

The datacode is embedded in the video like "meta data" on a still image. Assuming the date stamp is correct, "some media players can show it, some can't" is accurate. The player should have and option to allow that datacode to be visible (default is not visible).

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Thanks for the links and manual excerpts.
by R. Proffitt Forum moderator / September 11, 2012 8:51 AM PDT
In reply to: oops... forgot...

At least the video was not "lost". It's one of the easier lessons about working with their camcorder.

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date time stamp via dropbox photo importer
by milstone--2008 / April 14, 2013 12:21 AM PDT

Dropbox's Photo Importer function might do this.The app will launch when you connect a camera to your computer and will download images all images on the sd card to the dropbox "Camera Uploads" directory on your computer with file names being the date and time stamp of each image file in the following format: yyy-mm-dd I have only used it with a Canon point-and-shoot but it does this for the video (.avi) as well as jpg files on the camera's sd card so I hope it will do the same for video from a "real" video camera.

You must install Dropbox (of course) and my experience is Dropbox must also be running for this to work. That is, the importer will not launch "in the background" if Dropbox itself is not running. You can move these files later and delete from your Dropbox if you don't want them there.

I didn't find an easier way to grab this info from my input device and bundled software, which supports only date but not time info in exported file names. I'm sure it can also be done with dedicated software that reads metadata of theimage and video files.

Mac OS 10.5.8, Dropbox 1.6.18.

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