Not able to play video in my iPad

Hi every one,

I am developing a flex mobile application which runs video in call out. This
is running perfectly in android tabs, but when i compile my code for my iPad
i only see video player, but their is no sound and video playing. I have
tried many things to resolve my problem, but nothing helped me till now. If
any one knows about it please let me know about it, so that i can finish my
project ASAP.

I am using Flash Builder 4.7, AIR 3.9 and SDK 'Apache Flex 4.11.0 FP 11.9
AIR 3.9 en_US'

Till now i have tried in built video player, video bridge, stage web view,
and few others but, none of them were helpful in playing video in my iPad.

Thanks.