I would like to convert VCD from one language to another languauge. (Assume that it's Japanese to English) What should I do to success that. I already did de-multiplex with MPEG file. However, I have no idea how can I know the point to record the sound that match to the original. (Ex.When, Japanese Speaking, I will use English instead at the same time.)

I also would like to know that is it possible to make the left channel to Japanese (Original) and right channel to English (New)

Thank you all.