I'm trying to use the live555 streaming media to stream video
that we are capturing to file from a camera.
The camera encodes (mpeg4) the video and writes it to a file. At the
same time live555 is reading from that file and streaming the video
over RTSP. The problem we are having is that the live555 streamer
catches up with the end of that growing file and then restarts from
the beginning of the file. How can I configure live555 to wait at
the end of the file until new frames arrive?
Instead of reading from a file, you should read from a *pipe*, so
that the OS will properly handle any attempts to read past the end of
file (without returning an 'end of data' indication).
So, I suggest modifying your camera application so that it writes to
'stdout', rather than to a file. You can use the "tee" utility to
record your data to a file as well as streaming it. I.e., you can run
your-camera-encoder-app | tee your-output-file-name | our-rtsp-server
(assuming you're on a Unix system).
You will need to modify the RTSP server code to (i) read from
'stdin', and (ii) set "reuseFirstSource" to True. (Read the FAQ for
more information.)
--
Ross Finlayson
Live Networks, Inc.
http://www.live555.com/
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