SOS! Problem with Corel Pro X4 - sound disappears in MP4

[PhysioEmoDynamics]

Hi guys, SOS!
I am editing videos (that need to be completed urgently) in Corel Pro X4 and have serious troubles.
VSP file looks absolutely fine during Project preview.
Yet when MP4 file is produced (iphone/ipad HD format as suggested originally by support for the web) – then the sound disappears after a few minutes.
I tried to play this MP4 of a few different computers and it looks the same.
Please help, as I am in deep sh…t with all my 20 videos.
Thank you in advance.

[teknisyan]

Does the problem happens when creating a different files, like DVD "Create video file > DVD > DVD Video (16:9)"?

Another workaround that you can try is to create your own movie template to product the mp4, you can go to SETTINGS > MAKE MOVIE TEMPLATE MANAGER. From there click on NEW and select the file format that you want in your case MPEG-4 Files (*.mp4).

You should see your template when you click on CREATE VIDEO FILE from the Share section.

Another thing, you may also want to update the codecs on your computer. Here are some of the codecs that you may want to install.
RealPlayer: http://www.real.com/
DivX: http://www.divx.com/en/software/divx-plus/codec-pack
XviD: http://downloads.xvid.org/downloads/xvidcore-1.3.2.zip
Windows Media Player: http://windows.microsoft.com/en-US/wind ... dia-player or just download the Windows Encoder at http://www.microsoft.com/expression/pro ... rview.aspx
QuickTime: http://www.apple.com/quicktime/download/
Direct X: http://on-msn.com/aLrk0j (WinXP)
Direct X: http://www.microsoft.com/Windows/window ... tx-11.aspx