Note that it'll still result in, in cases (e.g., low backlight level) considerably higher battery usage / possible heatup. This is the biggest problem with software decoding.
I'm just doing some real-world battery usage tests using the best players. Have already benchmarked VLC. It, assuming the lowest backlight level on the iPhone 5* so that the power usage because of CPU decoding can as safely be measured as possible, consumes about three times more battery than top hardware players:
HD Player Pro, nPlayer, AVPlayer(HD). (The latter three are also already tested.)
*: I stick with A6 (the iPhone 5) in these tests so that the new results are directly comparable to my previous ones published this February:
https://forums.macrumors.com/threads/1547504/ . The results do also carry over to the A7. I'll, when I have some time (these kinds of benchmarks are VERY time-consuming as I use a 130-minute MKV for testing), repeat the tests for A7's.