I ran a few tests using video as load, and the results were startling if not unexpected.

All tests used the same procedured outlined above, but I used a video file as load, instead of a music file. For those interested in running the same test, the video was the mp4 trailer @ 480 of sintel, from http://www.sintel.org/. It runs for about 50s, and I used a 10x loop.

The results follow:
| profile | juice | % |
| default | 245 | 100% |
| dsp | 270 | 110% |
| starving | 245 | 100% |

So for my phone, OC does not save power, at least playing video with mplayer.