My first attempt to encode an AVI with AC3 soundtrack "failed" after about 3 hours of encoding. However, I was given the M2v and, happily, I had previously converted the soundtrack to mp2 and a muxing of the two was successful, at last, after so many previous tries and failures (herky, jerky vids)

My 2nd attempt to encode a SVCD to VCD also "failed" but again, I had to demux the original file and then slapped it together with the newly made m2v VCD edition. Both attempts eventually succeeded, but...

Nice drag n' drop files tho!