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great to see you're working on the 4S. looking forward to the release of the cydia app. cheers!
 
60fps?

Very nice write up and thanks for taking the time to explain all the technical details!

One minor quibble though. This guy has posted and stated that 60fps is possible on the iPhone 4S. -> It's Possible (Video)

A few posts later in that thread he has the edits required to make this work. -> AVCaptureSession.plist

I've done the edits myself and they seem to work great. Videos recorded from the stock Camera.app are indeed 720p/60fps. There seems to be no loss in quality from the stock configuration and the frame rate does seem to be accurate to 60fps. Thoughts?
 
Very nice write up and thanks for taking the time to explain all the technical details!

One minor quibble though. This guy has posted and stated that 60fps is possible on the iPhone 4S. -> It's Possible (Video)

A few posts later in that thread he has the edits required to make this work. -> AVCaptureSession.plist

I've done the edits myself and they seem to work great. Videos recorded from the stock Camera.app are indeed 720p/60fps. There seems to be no loss in quality from the stock configuration and the frame rate does seem to be accurate to 60fps. Thoughts?

Thanks! I've thoroughly tested this hack. It works just great! Updated the original writeup with info & comparison shots & a video that shows it indeed records 60 fps.
 
Folks,

I've finished hacking & vastly enhacing the video camera mode of the iPhone 4S. I've published my findings at http://www.iphonelife.com/blog/87/vastly-enhancing-video-camera-iphone-4s-–-part-i

Feedback is welcome :)

(Sorry for the external link: the article is too long and has too many inline images - it would have taken me a LOT of time to adapt it to the current forum's engine.)


Whenever I download the 720 binded mode I get the following code (yes with the weird symbols). Can you help me please. Thanks

bplist00Ñ  _AVCaptureDevices£ ß#     

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    ; rƒ  rž³Â XÎÏÐÝÞë÷ø c Ö [ ( ) \ œ * ׄ‡ˆ *‰Ô , - . /… K† 3ÃPÿ_Front Facing Video ConferencingUVC_F:Û 7 l 8Š‹ Þ q 9 ¥ : £Œ“ r•– 3—˜›_HWFaceDetectionMode_PreviewVideoMirrorÓ = t > §Ž@ðÓ = t >‘ §’@ð^AttachMetadata ZZÓ = t >™ §š@ð]PortTypeFront \Front CameraÕ Z [ ) \ *Ÿ g¤ i¥Ò ^ _*¢Ñ a¡¢ c dÑ a£¡ d_Front Facing VGA Photo× 7 l 8 o p q :¦©ª r r¯°Ó = t >§ v¨€àÓ = t >« v¬€à Ó = t >± v²€àÓ ( ) *´·¸Ô , - . /µ K¶ 3 3÷ÿ_Front Facing 352x288Ó 7 8 :¹¼¿Ò = >º»` Ò = >½¾` Ò = >ÀÁ` Ó ( ) *ÃÆÇÔ , - . /Ä KÅ 3 ¬üÿ_Front Facing High Quality VideoÒ 7 8ÈËÒ = >ÉÊ€àÒ = >ÌÍ€à#?ìÌÌÌÌÌÍ¢ Ä ;Ó ( ) *ÑÔÕÔ , - . /Ò KÓ 3>€ÿ_Front Facing Low Quality VideoÔ 7 l 8 qÖÙÚ ¿Ò = >רÀÒ = >ÛÜÀ#?ÖffffffÕ [ \ › œ *  ž r *à Û 7 l 8 ¢‹ ¤ q 9 ¥ : £áâã r r ¬æ Dçè›Ñ t §Ñ t § ZÓ = t >é §ê€àÓ ( ) *ìïðÔ , - . /í Kî 3 UÌÿ_!Front Facing Medium Quality VideoÒ 7 8ñôÒ = >òóàhÒ = >õöàh¢ Ä ;Ó ( ) *ùÆüÔ , - . /ú Kû 3 ¬üÿÒ 7 8ý Ò = >þÿ€àÒ = >€àß       
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Slow to switch to Photo mode?

I can swap out the 720p binned for the 1080p regular plist easily through SSH.

If I have the 1080p file, switching back and forth between camera and video is fast.

If I have the 720p file, switching takes .. about 20-30 seconds. Ouch!

Any ideas?

-Dan
 
Last edited:
So for the best low-light performance with jailbreak I could choose 640x480, 15fps (better low-light performance) AND binned (5x5 fits the sensor)? Your article notes that decreasing the resolution helps low-light performance, decreasing the framerate does too and so does binned... but can you combine all three and does it have a noticeable benefit?

By the way, wouldn't increasing the Mbps of the Apple encoder also improve low-light performance, at least at 1080p and 720p? What's the upper limit for the Apple encoder? 24 Mbps (like FiLMiC's encoder)?
 
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