Christian D

I tried to send a short slideshow video (exported and saved as a mp4 file automatically with H.264 AAC, 30fps) via imessage and whatsapp. But this is not possible. Both transfers failed. I think its the wrong codec. When i worked with the older Photostage Version, the codec was "mpeg4" and everything was working. So does anybody know how to change the codecs when exporting the file? thanks in advance.