VOD JIT packaging on Origin and CDN

Hi all.

I have an origin server with Adobe Media Serer 5.0 installed on it.

I'm having some issues while playing back HDS streams packaged by jit and playing them back with Strobe Media Playback.

Currently in my configuration I have a cache expire of 2 seconds for all manifest, drm and bootstrap files. And 3600 seconds for all the video chunks.

What I experience is that sometimes (I really can't figure out when, but it seems to be related with cache on the CDN or client side) the player downloads only the first or the 2 first fragments of video and never plays that back. It keeps buffering constantly and it does not playback at all. Sometimes the first or second fragments get downloaded completly and sometime only partialy.

Te JIT packager is also implementing PHDS, don't know if this might be some kind of an issue.

Thanks for any help you can provide me

Regards

Eduardo