Rockbox Development > Starting Development and Compiling

huge mpegplayer speedup

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ColdSphinx:
Tried on an iax5...result: no video, just audio...

misterpink:
I think I've slightly misunderstood what it is that RoLo is meant to achieve, but that is slightly irrelevant as the very first time I did it I completely overwrote my firmware. I'm not saying that we really have actually managed to massively improve the mpegplayer code or anything, my theory is more along the lines of we've buggered it up somewhere, probably resulting in it dropping tons of frames and so appearing to go superfast. Trying it again all I've got is no video, so I think the first time I tried it I did something wrong. It probably still did this the second time I tried because using RoLo was doing nothing so it was still really using my first edited code. If something magic really is occurring on the iPod then I really would love to know how...

gnif:
ok, to make sure that it isnt my iPod I borrowed another 5.5G 30G video and did the following...

- used iTunes to restore it to factory
- used ipodpatcher and installed bootloader
- uncompressed the rockbox zip to the root directory of the ipod
- placed test mpeg video in the root of the ipod
- rebooted ipod
- turned off frame skip and lock fps
- played video

Same results, I still have video output, and it is heaps faster then the original. I am really confused as to how this is happening because to me it doesn't seem possible.

lights0ut:
OK, I've tried this out and I get the same result as gnif, but NO video is output (as is expected). I followed the same routine, apart from restoring/rockboxing. The reported FPS just continues to rise.

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