File Type

I am hoping someone can shed some light here…

I just started using the Sansa Media converter and it works great EXCEPT for one MPEG-4 video that it SAYS it has converted but it only gives me audio, no video.  I have tried it twice.  I have looked online for all kinds of info on how to convert it to something else… how to download it maybe in another format… is there something *easy* you can tell me as to why this may be happening?  I converted another MPEG-4 which is FINE.

I have the e280.

Thanks,

JC