Glad to help :-)

About sending PMs: please don't,  

if you have a question about Vuforia, post it on the Forum. 

thanks alessandroo ... its workssss... really thanks very much ..

anyone .. if wanna ask something about vuforia videoplayback in unity . can send PM me about your problem . thanks :)

okay admin ... thx for you''re opinion . i will try

god bless you :)

If you are building Video Playback by yourself, you are probably taking the Video prefab and attaching them to some of your Image targets, rght ?

So, the Video prefab object does not include any logic to handle the 'touch' to play the videos; the touch-based play is just part of the sample code, so you need to have a look at the VideoPlayback sample, look at the sample scripts in there and try to reimplement a similar feature.

In the sample code, in particular, have a look at the methods called "HandleTap" and "PickVideo", in the VideoPlaybackAppManager.cs script you can reuse such code in your own app. 

thank's alesanddro for the reply ...

for example VP vuforia. im install in my galaxy nexus its works. but i try build myself to make VP and works.. and my problem , if im touch a play icon in video . that's nothing happened play video.

can u help ?

A bit more details would help:

- what Unity version

- what Vuforia version

- are you getting the error in the VP sample or is it your project / app ?