Panasonic MPEG1 Encoder Convert to vcd to long

[rawdeal]

Why does panasonic MPEG1 take 12 hours to convert divx to mpeg1 (VCD)

[wolleric]

That depends on the settings in your encoder. If you use Multipass-VBR, the whole process takes very long because the video is processed several times to determine when the encoder has to use a certain bitrate (VBR = Variable BitRate).
Constant BitRate (CBR) is fastest because the file is only processed once, but VBR yields better quality.
Encoding time also depends on what encoder you use. I don't know about the Panasonic encoder, but Cinema Craft Encoder is faster.

[vitualis]

Because the Panasonic MPEG Encoder is OLD (assuming you are using v2.x) and is only optimised for MMX.

The quality it gives for standard VCD is pretty good though...

Regards.