App to launch video camera

Hi I need a basic app that once started will have a button to start the video recording. Once the recording is in progress it will have a button to stop the recording. It doesn't need to have any zoom features or anything like that. The recording would then be saved to the sd card in the device, each time the start button is pressed it will simply overwrite the previous recording. The recording needs to be saved in a universal format, which i am assuming will automatically be decided by the device. If possible i would like the developer to build the android and apple versions however happy to split the development. Please bid to build both apps, if you only want to build one please send me a pm with the bid for one of the apps