Bought the app, seems very laggy on my iPhone 5s. Is this to be expected? I wonder if it is doing the processing as the phone is recording or if it is capturing the accelerometer data and modifying the video after that fact?
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Show HN: We put an iPhone on the front wheel of a car
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Re: Show HN: We put an iPhone on the front wheel of a car
#32Kudos to you guys for trying to solve the VVS problem! For your second experiment, may I recommend attaching the iphone to the disc of a variable-speed angle grinder? You'll get a much larger range of speeds, as well as the ability to aim the camera freely. You'll be able to test how your accelerometer algos handle pitch and yaw IN ADDITION to centrifugal force!
Developer of the app here. One step ahead of you ;)
Re: Show HN: We put an iPhone on the front wheel of a car
#33Bought the app, seems very laggy on my iPhone 5s. Is this to be expected? I wonder if it is doing the processing as the phone is recording or if it is capturing the accelerometer data and modifying the video after that fact?
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The lagging is because of the iOS's stabilization. You can disable it on the settings ;)
Re: Show HN: We put an iPhone on the front wheel of a car
#34I have some serious sea legs and almost never get motion sickness. The fullscreen youtube vid got me. Great experiment.
Why on Earth you had to tell that? After reading your comment I had to go and check out video on my own... Will not do that anymore.
Re: Show HN: We put an iPhone on the front wheel of a car
#35Very cool experiment, and even cooler visual results!
One thing though - the tilting of the scene from the phone's perceived variance of the gravity vector is not due to centrifugal force, but due to inertia.
In other words, it's the same reason you're pushed back into your seat when you accelerate, and slam your head into the dashboard and spill hot coffee in your lap when you lock up the breaks.
Re: Show HN: We put an iPhone on the front wheel of a car
#36They kept mentioning 'Horizon', took me a couple minutes to realize they weren't talking about the BBC Series heh.
Re: Show HN: We put an iPhone on the front wheel of a car
#37Now this is viral marketing. Great job guys
Re: Show HN: We put an iPhone on the front wheel of a car
#38Does anybody know of any software which can do this for videos which were already captured?
Re: Show HN: We put an iPhone on the front wheel of a car
#39Very cool experiment, and even cooler visual results! One thing though - the tilting of the scene from the phone's perceived variance of the gravity vector is not due to centrifugal force, but due to inertia. In other words, it's the same reason you're pushed back into your seat when you accelerate, and slam your head into the dashboard and spill hot coffee in your lap when you lock up the breaks.
We also did an experiment with this:
http://imgur.com/tdnympM
The same problem existed. So it is not inertia in this case. However, inertia could also interfere with the gravity vector.
Re: Show HN: We put an iPhone on the front wheel of a car
#40Cool experiment, I just dont get, how that idea came to your mind? - "Oh, man, look, I have an iPhone. Guess what?" - "Yeah, we should certainly put it on a wheel of a car!"
It's so obvious which people commented without reading the article in this thread.