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I would like to try recording sleep with an iPhone, connected to a power source overnight. However, I'm not sure if the default camera is capable of recording videos that long. A colleague suggested using a video codec with very few key frames, just saving the changes between frames.
My questions are twofold - are there any open source projects that already do long(3+ hours) video recording on iPhone. How would I extract the file from the iPhone if it is 3 Gb or so in size?
At first glance this doesn't really appear to be a programming question...but you hint that you may be looking for open-source code for a video codec.
However I thought I might shed a bit of light on the iPhone itself.
If you're recording at 320p, that averages out to about 15mb per minute. Calculating 8 hours, equals 7.2GB.
To my knowledge, there is no time limit, just the limit of your iPhone empty HD space. However, some people have reported that the video recording stops sometimes, seemingly randomly, during very long recordings.
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Hi i am indy developer .
as you know many of indy developer had tiny resources to use.
so i decide using garage band for my app
but i was frustrated what is this right thing ?
if i make sound and effect using garageband and it's preset or resources
it's legal to use?
Yes, it is. Apple's sounds effects are royalty-free.
i. GarageBand/Jam Pack Software. You may use the Apple and third party audio loop content
("Audio Content"), contained in or otherwise included with the GarageBand/Jam Pack Software, on a
royalty-free basis, to create your own original soundtracks for your video and audio projects. You may
broadcast and/or distribute your own soundtracks that were created using the Audio Content,
however, individual samples, sound sets, or audio loops may not be commercially or otherwise
distributed on a standalone basis, nor may they be repackaged in whole or in part as audio samples,
sound libraries, sound effects or music beds.
(from the iLife SLA - Software License Agreement)
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I am trying to build a webpage that shows the video of a webcam on live.
Right now, I have no webcam, so I'll have to buy one. I don't mind how much it costs, I just want it working with a good resolution (at least 720p).
I don't know which kind of camera I should buy and which programming language is better for that (if it's possible I would prefer not to use Flash).
Can you help me?
Sorry for my bad English, I'm trying to improve ;)
Alex
To show in a webpage, you can use IP-Camera. They cost a little more, but they can serve their images as independent network node. They also supports voice and live compression (H264 and MPEG4).
Best brand is Axis, but there are lots of options.
For Axis camera models, adding view to page would be as easy as add this item to your page:
<img src='http://192.168.1.20/axis-cgi/mjpg/video.cgi'>
It works for most browser, not IE. For IE, they have support as well here.
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I am working on a musical instrument app for iPhone and need sample sounds that I can use for the various wind instruments. I'll be using OpenAL with looping, so a 1 second sample that is spot-on in-tune and without vibrato or other variation is essential.
My question is: Where can I find audio samples that are, or can be converted to .CAF format for looping play? Need these to be "realistic" sounding, not electronic sounding. Not looking for freebie, looking for professional quality.
Thanks in advance!
Here's the command for converting to CAF format:
/usr/bin/afconvert -f caff -d LEI16#44100 myaudiofile.wav myaudiofile.caf;
Regarding finding samples, there's a ton out there. Search Google with "free audio samples".
Magazines like Sound On Sound and Computer Music will often have deals. Although sometimes you'll need to buy the magazine, or be a subscriber. They do lots of reviews of commercial sample CDs. Often these are quite reasonably priced (e.g. $50).
As with everything, the key is to check the license carefully to make sure it's full use and that you can redistribute in your app. That also applies to samples that you can download for free.
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I am wondering how people are being able to record there game play?
Like this video is of angry birds which shows game play.
please help as my game is near to the deployment so i can also create my game video and upload.
You could try playing the game in the simulator and recording your screen =p
One option would be to use iSimulate to send the simulator accelerometer data to the simulator and then to use screen recording software to capture video from the simulator.
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I need to develop an iPhone/iPod application which runs in the background and can measure audio output. It is part of a research project to measure how loud people have their music. Unfortunately I am unfamiliar with the iOS 4 SDK.
Ideally, the application would have to know if headphones are plugged in, be able to measure the volume of the audio signal being outputted (and calculate some data) and then be able to, at some point, update data to a central database.
Taking into account the multitasking capabilities, is it possible to develop such an application for the iOS 4?
I am aware that multitasking on this platform is quite limited, however I also noticed that audio processing seems to be possible (only to an extent perhaps?)
Here's a question which shows how it can done, but unfortunately, you can only do it for your app (or more correctly, I should say only when your app is active), you can't add a global hook to be notified in the background when the volume is changed by another app.
iOS (4) doesn't have background services like Android which is what I believe you're looking to do.