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 Post Posted: Fri Nov 03, 2017 9:12 pm 
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I import from miniDV into the latest iMovie.

Any ideas how it determines clip lengths? When I import long, continuous clips it breaks them down into multiple clips of varying lengths. Some are as short as a second or less, some a couple of minutes.

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 Post Posted: Fri Nov 03, 2017 10:26 pm 
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Each frame has real time information in the metadata (= actual time of day shot, if you've set your camera's clock correctly). Discontinuities in that time of day between successive frames indicate a new clip.

Note, this real time info is SEPARATE from the timecode information (also in the metadata for each frame), which would be continuous from the start to end of the tape.

The metadata also contains other limited shooting information like gain, aperture, shutterspeed...

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 Post Posted: Sat Nov 04, 2017 8:03 pm 
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Yes, and back in the day with iMovie6HD, that all worked fine, with clip lengths equal to the stop/start filming with the camcorder. Not working with iMovie10. In fact, looking back at a iMovie11(v9) Event, it wasn't working that well then either.

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 Post Posted: Sun Nov 05, 2017 12:20 pm 
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Well, the other method out there is: defining a new clip when the picture CONTENT changes massively (not just gradually) between successive frames. Obviously this is much less reliable, and more computationally intensive than realtime code discontinuities. This method can easily fail and:
- miss clips changes where the camera and subject don't change much or at all, and
- insert unwanted clip boundaries where the image content changes too much, like a whip-pan.

I have no idea how iMovie10 does it - but maybe it uses this, less reliable, method for some reason.

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 Post Posted: Sun Nov 05, 2017 12:44 pm 
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I still have iMovie HD 6.0.4 if you need it. It works under Mavericks anyway.

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 Post Posted: Sun Nov 05, 2017 12:52 pm 
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If you still have iMovie HD on your Mac i have been using this method to it for a couple of years now and it is working in high sierra https://www.youtube.com/watch?v=BGDabav9WnY

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 Post Posted: Sun Nov 05, 2017 1:26 pm 
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If that works you can make a symbolic link to it and put that in a handy location. You can rename the symlink appropriately if you need to.

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...................See them on the beach
......................Or in New York City

.............Tina Louise & Hazel & Mavis
Can you name, name, name, name them all today
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 Post Posted: Sun Nov 05, 2017 8:30 pm 
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Thanks for the offers of iMovie6HD, but I also still have a copy. However, it does need a Terminal hack, which I have, to make it work in Sierra.

All said though, the current iMovie is far superior, so I'll be sticking with that.

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