Batch Convert processing performance could be improved

[mikeymikec]

I suspect that a simple save to JPEG format isn't multi-threaded, as my quad-core processor usage was a solid 25% throughout. As I tend to re-save my digital camera photos to trim down the file sizes (even on a decent quality JPEG setting the file sizes can be halved a lot of the time) using this feature in XnView, it would be really handy if the processor was utilised better.

[wOxxOm]

indeed, xnview could just run several conversions simultaneously by the number of cpus detected