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Old September 30th, 2004, 12:49 AM   #1
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Convert DVD to Digi Camera for playback

I have an Aiptek DV3100 with a 256MB flash drive & an interesting idea. Since this digi camera records video & audio for playback on its own LCD screen, I want to be able to download a professional movie (for my own personal use, as a backup) to the camera and play it back through the LCD and internal speaker. I have the movie in AVI format but keep getting "[in]correct format" when trying to play it on the camera. When I copy a recorded movie made by the camera to my Mac (or pc), these are the format specs:
VIDEO: mjpeg (OpenDML), (Millions colors), 320x240, 9.83 fps. AUDIO: (DVI) adpcm_ima_wav,
8000 Hz, mono, 32 kb/s
Using TMPGEnc and a Demo of Main Concept's Motion-JPEG codec,
I can make a mjpeg at 320x240 at 9.99fps and adpcm ima compressed sound at 8000Hz mono, but the bitrate varys (which it does so on ea. camera recorded AVI file).

In sum, I have generally exactly the same AVI format as the camera makes, but still no dice.

If anyone knows more about how these camera's interpret the difference between it's own created files and the one's I make it would be greatly appreciated.

This idea sounds cool to me, basically you would have a portable movie player, similar to a portable DVD player, only smaller!
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Old September 30th, 2004, 04:56 AM   #2
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Join Date: Oct 2001
Location: Holland
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There is a chance the signature does not match. Go to the site
www.doom9.org. Click on downloads and then on to
AVI Editing tools. Now click on "show all AVI editing tools" and
left-click (doesn't work with right-click and save as) on "FourCC
changer"

Extract the program after download and run it. Click on the little
open file icon and load a file that originated on the camera. Note
what it says in the upper pulldown and then load your own
encoded file. The two values between the files should be the
same, if not, change your own files upper dropdown to say the
same thing as your camera and hit apply.
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Old October 7th, 2004, 09:43 AM   #3
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No luck. The only difference is that the type was mjpg on one and MJPG on the other. Anyone know if there are any other signatures that could be embedded in an AVI file and how to read it? I.E. some formats have an author string embedded.
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Old October 7th, 2004, 11:06 AM   #4
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I would still try to change the upper/lower case to the correct
case and see what that does. It might be not read good in the
camera. If that still doesn't solve it, it must be something else.

One finaly thing. Can you set whether you want a type-1 or
type-2 AVI in TMPGEnc? That might be an issue as well. 99%
chance the camera expects type-1.

If neither this solves the problem then it must be in resolution
or bitrate because there is nothing else left.

It might be possible to encode some signatures in the movie,
but I highly doubt that they will go to such lengths as to do this
*and* check this. I've never seen or heard of that before.
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