Playing Video in Chunks

Hi,
I am working on S60_3rd_FP1.

I want to play video in chunks. For this purpose I used CVideoPlayerUtility->OpenDesL(). But I am facing problem that if I give entire video data(descriptor) to this fuction then it is playing it, but if I feed data in part ( 8K ) then in MvpuoPrepareComplete() I am getting KErrNotSupported.
So does it means that OpenDesL() function can not be used for playing video data in multiple chunk? If not is there any other way to do it?

My actual purpose is to play video data as it is available and I dont want wait for entire data. So how to do it?

Thanks.