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2009-11-10
, 21:00
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Posts: 25 |
Thanked: 9 times |
Joined on Sep 2009
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#12
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What about this video?
http://www.youtube.com/watch?v=-_j2nX1Gc4Q
It looks really good and it should work with N900, too! The autofocus noise isn'is really quiet and if there are other louder noises like speech you won't hear it. AND, N900 has USB and an open source OS, so you could use an USB micro with some effort, so you could prevent recording the noise anyway...
I really hope video autofocus could be done by software and N900 is powerfull enough to do it.
http://www.youtube.com/watch?v=-_j2nX1Gc4Q
It looks really good and it should work with N900, too! The autofocus noise isn'is really quiet and if there are other louder noises like speech you won't hear it. AND, N900 has USB and an open source OS, so you could use an USB micro with some effort, so you could prevent recording the noise anyway...
I really hope video autofocus could be done by software and N900 is powerfull enough to do it.
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2009-11-10
, 21:47
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Posts: 3,790 |
Thanked: 5,718 times |
Joined on Mar 2006
@ Vienna, Austria
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#13
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Originally Posted by jessi3k3
mhm... right. i usually take very short video clips and edit them to a longer video when finished (at least i used to do that on my S60 phone - can the N900 edit videos?), so continuous autofocus has less value for me personally.
My personal concern is the lack of video stabilization in the N900. Is this feature even present at the moment? I've seen dozens of recorded N900 videos with horrible shaking and has led me to believe video stabilization is not implemented (where every s60 cameraphone has this feature)
but video stabilization would be great. - would the accelerometer be good enough to do this? you know... realize when you tremble and adjust the image accordingly. if it works it could be better than trying to guess from the video information itself.
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2009-11-10
, 22:08
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Posts: 361 |
Thanked: 108 times |
Joined on Sep 2008
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#14
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well what about the option for autofocus by pressing a button or tapping the screen?
While it is recording if you want it to adjust the focus you simply tap the screen and it autofocuses. That would be a nice implementation, and would avoid unwanted noises if you don't want it to autofocus costantly.
While it is recording if you want it to adjust the focus you simply tap the screen and it autofocuses. That would be a nice implementation, and would avoid unwanted noises if you don't want it to autofocus costantly.
| The Following 5 Users Say Thank You to dantonic For This Useful Post: | ||
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2009-11-10
, 23:16
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Posts: 25 |
Thanked: 9 times |
Joined on Sep 2009
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#15
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Good idea. Let us hope it's just a software problem! 
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2009-11-11
, 09:04
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Posts: 38 |
Thanked: 10 times |
Joined on Nov 2009
@ DUBAI , UAE
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#16
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Originally Posted by dantonic
i believe that's will do ..
well what about the option for autofocus by pressing a button or tapping the screen?
While it is recording if you want it to adjust the focus you simply tap the screen and it autofocuses. That would be a nice implementation, and would avoid unwanted noises if you don't want it to autofocus costantly.
i would call it (Tap2focus)
| The Following User Says Thank You to amer19 For This Useful Post: | ||
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2009-11-11
, 09:38
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Posts: 316 |
Thanked: 150 times |
Joined on May 2006
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#17
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I like the screen tapping idea - you can use this to indicate what to focus on.
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2009-11-11
, 09:52
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Posts: 3,319 |
Thanked: 5,610 times |
Joined on Aug 2008
@ Finland
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#18
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Originally Posted by benny1967
This question has two parts - first, the sampling rate and second, the linking of the accelerometer data to the actual frame - which is not as easy as it may seem at first sight (you have to account for component lags, the 'empty' space between the actual frame exposures, etc, etc). It might be possible, but it's not an easy task without dedicated hardware.
but video stabilization would be great. - would the accelerometer be good enough to do this? you know... realize when you tremble and adjust the image accordingly. if it works it could be better than trying to guess from the video information itself.
| The Following User Says Thank You to attila77 For This Useful Post: | ||
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2010-01-29
, 14:15
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Posts: 82 |
Thanked: 214 times |
Joined on Jan 2010
@ Cape town
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#19
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After doing a bit of playing around, focusing the camera manually while recording a video is really easy. It shouldn't be too hard to bind the appropriate commands to the volume keys, giving you manual focus while recording. Autofocus on the other hand would need something a bit more intelligent, but the hardware is definitely capable. Maybe gst-opencv could be of some help. If not for autofocus, then at least for cool things like face detection and face blurring.
See http://www.youtube.com/watch?v=k5TqbtXwLpQ for a horrible quality video of it.
See http://www.youtube.com/watch?v=k5TqbtXwLpQ for a horrible quality video of it.
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2010-09-26
, 05:11
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Posts: 162 |
Thanked: 20 times |
Joined on Oct 2009
@ California
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#20
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Greetings guys,
I'm waiting impatiently for the autofocus feature on the N900 to get implemented ASAP. It's very important to me because I use the phone to record the lab assistants' explanations in my anatomy class (for later reference). So it's very important to keep clear focus on the structure that's being explained, especially on the smaller and more complex ones. The recordings really help to understand anatomy, and help me get good grades on practicums.
Please, smart people out there, make it work on the N900.
I'm waiting impatiently for the autofocus feature on the N900 to get implemented ASAP. It's very important to me because I use the phone to record the lab assistants' explanations in my anatomy class (for later reference). So it's very important to keep clear focus on the structure that's being explained, especially on the smaller and more complex ones. The recordings really help to understand anatomy, and help me get good grades on practicums.
Please, smart people out there, make it work on the N900.
.