Play (and keeping to synce) multiple video streams?
Hi allI wonder if the following is possible with Flash Media Server:
We store technical workshops at conferences, and we are looking for a way for people to watch them later with a very good user experience. Currently, we give presenters Camtasia to record their actions on the screen, which then encode us into a single video file. We also use a video camera to record the presenter of the size upwards, which encode us in a second video file. So now we have two video files we would like to keep synchronized to display to the user at the same time.
Is it possible to use Flash Media Server as well as a custom player to do this?
Basically, I don't think it would be too difficult to create a single set of playback controls that sent the time codes of reading request again to two separate video streams. The problem I see would be what would happen if one of the staggered creeks and had to pause the buffer while the other current continued to advance? In this case the two streams would become out of sync. Our current workaround is to make us two streams into a single video file, which is very demanding work and does give us no flexibility on the road, but that's all we could do to ensure that they remain synchronized when the user skipped around or that he stopped for buffering.
Any thoughts?
Thank you
Brian
Unfortunately, there is no really accurate way to keep streams synchronized with FMS.
Since there is no timecode to speak of, there is nothing to synchronize at other times netstream. The only way I know for ns synchronization is break time and restart the stream as they get out of sync, but as a FMS stream does not remain in the cache and buffer empties as soon as you interrupt the flow, you have to refresh whenever it is resumed. Even with a buffer of zero, ago yet the time it takes for the first few KB of data to the client, so there is always some default alignment.
Is FMS? I wonder if using an application server http to simulate the flow can be a viable solution (example http://flashcomguru.com/index.cfm/2005/11/2/Streaming-flv-video-via-PHP-take-two ). With progressive video, the data is cached and you have access to bytesloaded/bytestotal and time netstream, so I think that you would be able to achieve synchronization you want.
Tags: Adobe Media Server
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