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Home Forums Silverlight Design Video and Media Are Smooth Streaming and Fast Path compatibles?
4 replies. Latest Post by aldenml on August 5, 2009.
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aldenml
Member
157 points
24 Posts
07-31-2009 6:36 PM |
Smooth Streaming use use a few diferent size and bitrates encoded videos. There are special requierements to trigger Fast Path.
Are Smooth Streaming and Fast Path compatibles?
gillesk
302 points
66 Posts
08-04-2009 11:42 AM |
You can do fast path with Smooth Streaming, but you need to optimize the fast path for one specific resolution. You can have multiple bitrates in your smooth streaming config but with the same resolution, all these would go through fast path. Also, if you enable HW acceleration on your media element, then fast path becomes much less of an issue.
08-05-2009 3:43 PM |
I think this is not a good solution. If you encode all the multiple bitrates streams at the same resolution, for the case of the lowest bitrate, probably you are getting an extremely poor video quality. You need lower the resolution and gain some advantage in the scaling (CPU intensive).
Now, what is the meaning of: "...HW acceleration on your media element,..."? I thought GPU acceleration for video is only used in full screen. Thanks a lot.
08-05-2009 3:49 PM |
I didn't mean to encode all bitrates at the same resolution, but to pick one resolution that you'll optimize the player for. You can always have the player resize when you switch bitrates if you truly want to avoid the scaling. I understand that scaling is expensive, but you have a have a tradeoff.
HW scaling is enabled in Windowed mode on Windows and in Full-Screen on mac and windows.
08-05-2009 4:35 PM |
Interesting the point about HW scaling. Thanks for the clarification. I really like the combination Silverlight + Smooth Streaming.
Are Smooth Streaming and Fast Path compatibles?