Vdub with a dual core CPU?

[andyr74]

I have a dual core Athlon 64 X2 4200+.
When I'm using TMPEenc, the cpu is working at full speed. Taskmanager is showing 100%.
But when i use vdub-mpeg to convert an mpeg into xvid, the cpu is only working at 50% (1 core). I thought vdub could use bought cores?
Is this on option in vdub or something to do with the codec?

[vitualis]

Unless you are using the newest releases of the XviD codec, it is only single threaded.

Regards.

[jagabo]

And even with recent Xvid buklds you have to explicitly enable multhithreading in the codec's settings. With multithreading enabled you don't get a huge increase in performance like you do with TMPGEnc.

[celtic_druid]

VDub itself is multithreaded, so the input and output can use seperate threads. Decoding MPEG-2 isn't going to use that much CPU power though. Also maxing out the windows task manager doesn't necessarily result in faster encoding. For instance you might get a higher fps with 2 threads and only 80% CPU usage, but a slower fps with 100% CPU usage with 4 threads.