[LaSombra]

Well, what are the encoding settings of one vs the other? If the iPhone is encoding, to say, 2.000kbps and the iMac is encoding to 20.000kbps, the iMac will definitely take longer to encode.

It seems, to me, that the iPhone is just creating a new copy of the file. I'm not saying that's what's happening, but what it looks like compared to the iMac.

[tmikaeld]

Same resulting file-size, supposedly same settings

(Mentioned further down the twitter thread)