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Old 14-12-2007, 11:34 PM
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Omaroo (Chris Malikoff)
Let there be night...

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Canon MP120 DV to Registax? "Failed to open AVI"

Hey all

Jenny came home with a new little Canon MP120 DV video camera tonight to take videos of the puppies as they grow up for our buyers.

Right - what do you do when you get new audio-visual gear? Take it outside and point it up of course! LOL!

Well I set it to "night" mode and it saw M42 and the rest of Orion's sword without any problems. I took a video about 60 seconds long and then pulled it off the recorder and on to my desktop as an AVI file. Vista, by the way, was brilliant with this. It detected the camera via the Firewire port and simply installed the correct MP120 driver without fuss. I then opened Windows Movie Maker and imported the video without even trying. How good is that?

Well - Registax won't open the file. It came up with "Failed to open AVI stream". I added the .avi extension afain and ir still didn't recognise it. I pulled the video in to Movie Maker and then exported the AVI again. Still no diff.

Any ideas anyone?? Is there a compression-related (or something similar) issue I'm having? Has anyone done this before and is there a conversion tool to build correct AVI's for Registax to import?

I'd like to try some afocal stuff (like the moon) with it.

Cheers and thanks
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Old 14-12-2007, 11:49 PM
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Location: Brisbane
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Hi Chris

If the movie file has an extension type “.avi”, then some users have reported success with problem avi’s using a (freeware) app Virtual Dub here:


Open the avi in Virtual Dub and then save it as an avi and it may then work in Registax.

Oh, and make sure you do not capture the audio stream. Also, keep the file size below 1 Gig.



Last edited by Dennis; 15-12-2007 at 06:42 AM.
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Old 15-12-2007, 06:48 AM
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iceman (Mike)
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Dennis is right. Even though it's an avi, there's some formats that registax won't recognise.

But you can open it in Registax, and "Save as AVI", which saves it as a "standard" (?) conforming avi that registax will then recognise. Sound could have been a problem as well.

I regularly use avi's over 1 gig in Registax without issue, but I have heard of people having problems with large avi's.
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Old 15-12-2007, 09:28 AM
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Omaroo (Chris Malikoff)
Let there be night...

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Thanks fellas

Yep Dennis -that worked. I exported it as an "old-style" AVI and Registax just sucked it straight in.

I have a Scopetronix afocal adapter sitting in the cupboard I'd forgotten about - and I tried it this morning to discover that the alignment is going to be perfect for this camera to line up with a 1.25" EP mounted on either my home-made 80mm or the 66mm Petzval.

I hope the weather is OK tonight, like it was last night and I'll do some M42 and Moon stuff with it.
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Old 17-12-2007, 11:48 AM
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You may want to get this little program caleld WinDV, its the best for pulling of raw Digital video from a firewire camera. Windows Movie Maker may compress the video, thus adding artifacts etc. This one gets it in the native DV compressed format, it also means that the video will take up more space on your hard drive.

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