preloader Implement a preloader sprite when video is loading

[jaraiza]

Hi,

How can I implement a preloader when a video has just changed source?

I haven't found a moment, event or something when I can use:
 

anim_Loading.animations.play('Rota');
anim_Loading.visible = true;

And when to use:

anim_Loading.animations.stop('Rota');
anim_Loading.visible = false;

I've tried using play before "video.changeSource"  and stop after "video.play()" but sometimes it doesn't nothing and sometimes the code crashes because "play() conflicts".

Any ideas?

Thanks!!