Wowza Community

Question(s) about timestamps and webcam recording

Hello - our company is considering using Wowza for the serverside

capture of webcam video - currently generated by a Flash client, very

much like the “webcamrecording” demo included with the download. We’re

pretty happy with what we’re seeing so far, but have a question about

the output video data that is critical to our use case. Any

documentation or postings relating to it would really help us make our

decision.

Specifically - we need to be able to match up timepoints in the video

to various events we’re generating on the client side. We will have

timestamps for when these events occur, and in an ideal world, we’d be

able to just match them up to internal timestamps in the output video

file. So, we have some hopefully simple questions - when we output a

video file on the Wowza server, generated from a Flash client stream,

are there timestamps already available or easily recovered? Will the

framerate vary with bandwidth or server/client performance? Are there

any easy solutions or difficult problems with this we should be aware

of? Is there a difference (regarding timestamps in particular) between

output formats (FLV vs. MP4, etc)?

Thanks in advance,

-scot

Ticket reference: #84669

A good starting place, as mentioned in ticket, is the method of injecting cuepoints

You might insert timestamp cuepoints in each live stream periodically using a server-side timer as a way to sync them later, or you might have a Flash controller and an operator involved, watching the live stream and adding cuepoints to each stream on command.

Richard