#73882 - VanillaIcee - Tue Feb 28, 2006 7:24 pm
I was hoping someone can help me understand the codecs supported by Moonshell. As I understand it, MP2 audio now runs on the ARM7 processor. What video codec runs on the ARM9? Is it mpeg-1 video, and at what resolution and kbps?
Based on my calculations and some optimized ARM code I'm working on, I should be able to get mp3 to run on the ARM7 and even MPEG4-LC AAC as long as they are around 128kbps.
If this is the case, what quality video can run on an ARM9 at 67MHz? It seems like H.264 at a reasonable frame-rate/resolution should be able to play well on such a processor. Some commercial solutions make it seem that 256x192 video running at 256kbps should be 12-19 frames per second, and so a drop in kbps (192kbps for example) should improve the frame rate. Anyone know if I'm right, and whether there are any open-source implementations that may be ARM optimized?
Based on my calculations and some optimized ARM code I'm working on, I should be able to get mp3 to run on the ARM7 and even MPEG4-LC AAC as long as they are around 128kbps.
If this is the case, what quality video can run on an ARM9 at 67MHz? It seems like H.264 at a reasonable frame-rate/resolution should be able to play well on such a processor. Some commercial solutions make it seem that 256x192 video running at 256kbps should be 12-19 frames per second, and so a drop in kbps (192kbps for example) should improve the frame rate. Anyone know if I'm right, and whether there are any open-source implementations that may be ARM optimized?