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tarasdi · 23rd October 2014, 12:15

Hey Mariush,

I understand what you mean about practically using a lossy codec for a video that's already poor quality won't make a noticeable difference. So I suppose my question for some part is an educational one.

So the the iPhone will convert a series of frames
x1,x2,x3
To another series of frames (stored in a compressed format)
y1,y2,y3

Which are slightly different but take up less size than the 'raw' frames.

Is there a reason why we can't get the 'y' series of frames compress them so that when they are played back, we get exactly the same 'y' series of frames?

Given that the computing time and power of the iphone is limited when capturing video, I would have expected that if you you threw a few minutes of PC power at the video stream, you could end up with a smaller file size (without any loss of information).

23rd October 2014, 12:15	#3 \| Link
tarasdi Registered User Join Date: Oct 2014 Posts: 10	Hey Mariush, I understand what you mean about practically using a lossy codec for a video that's already poor quality won't make a noticeable difference. So I suppose my question for some part is an educational one. So the the iPhone will convert a series of frames x1,x2,x3 To another series of frames (stored in a compressed format) y1,y2,y3 Which are slightly different but take up less size than the 'raw' frames. Is there a reason why we can't get the 'y' series of frames compress them so that when they are played back, we get exactly the same 'y' series of frames? Given that the computing time and power of the iphone is limited when capturing video, I would have expected that if you you threw a few minutes of PC power at the video stream, you could end up with a smaller file size (without any loss of information).