Join 2 MP4s made by Nero Recode 4 (and Preserve 2x Audio; 2x Subs)

[GrayStrickland]

I used Nero Recode 4 (which comes with Nero 9 Suite) to encode an MP4 a previously ripped dvd. I used the factory defaults for everything except: the file has two audio tracks and two subtitle tracks *AND* I mistakenly instructed Nero to compress to the size of two (2) CDs. I thought I'd get one (1) file the size of a couple of cds -- wrong. Nero produced two separate files of nearly identical size (one file contains the first half of the movie and the other file the second half).

How can I join them without losing anything -- especially without losing both audio tracks and both subtitle sets?

I tried using YAMB, but it produced a file with only the first audio track and the first subtitle set.

[Baldrick]

I guess you could extract the other audio and subtitle tracks using yamb and join them separate. Then add them in to the joined mp4 using yamb again.