1080p h264 + DTS Pegs 1 core at 100%

[exousir]

On a Mini C2D 2.0GHz 2GB ram, the playback of H264 in XBMC is the most optimized I've seen so far, when compared to Quicktime, Perian, VLC. Which is pretty impressive considering the last two also use ffmpeg.

On a reasonably high bitrate 1080p h264 MKV, xbmc is the closest to playing it smoothly. The playback hovers between 20 to 23 frames per second.

One thing I noticed though, with the information screen up during playback is that 1 core is pegged at 100% whilst the other is left relatively free at around 12%.

If I'm reading the information correctly, it appears that the video decoding has been left to mostly 1 core, whilst the second core is doing audio decoding?

I'd be happy to send a MKV sample, or some other information if that helps.

[d4rk]

Currently, only certain types of H264 video use more than one core for decoding (specifically slice encoded H264). So if your H264 is not slice encoded, you currently won't benefit from multiple cores.