Play, seek a video

I want to play a video from Unity3D. The video play must be able to seek to a particular frame or time. Also I have a requirement of playing the video from web.

From Unity's documentation I am able to download an online video and play it as a movie texture. But I don't have the options to seek, fast forward etc. If you have any idea on that please let me know.

Or else suggest any libraries or plugins I can use to do this.

I know there are some plugins available which do the task. But they are costly for just playing a video with controls and they do not completely fulfill my requirements.

The video might be real time channel (ex. youtube live channel of some TVs) or a static video but with controls playing from web.

I don't know why Unity lacks this important feature. At Least it should've included one format of video play capabilities with controls, if it is facing any problems with video codecs or libraries' which behave differently across various platforms.

Unity 5 has come, but still it doesn't support this feature by default.

Thanks in advance.