[Live-devel] about openRTP

Ross Finlayson finlayson at live555.com
Thu Apr 19 07:25:31 PDT 2007


>First I used the command of "openRTP rtsp://192.168.0.1/test.mp4", 
>and then I got one audio file named audio-MPEG4-GENERIC-2 and one 
>video file named video-h264-1. I tried to open video-h264-1 with vlc 
>or mplayer, and all tries failed. I don't know what format this file 
>is. Is it h264 elementary stream file

Yes, of course.  The file name describes the contents of the stream.

Unfortunaately, I know of no media player that can play the file in 
this format.

>Then I used the command of "openRTP -v -4 -w 176 -h 144 -f 30 
>rtsp://192.168.0.1/test.mp4 > test_video.mp4", and then I opened 
>test_video.mp4 with vlc, with nothing playing back. I also used 
>quicktime player to open it. It can be played back but there are 
>some problems in picture reconstruction and there is audio in 
>between. What is wrong with it.

I don't know, but if you got audio, you must not have used the "-v" 
option, because that option causes only the video stream to be 
recorded.

Also, you need to be certain that the width, height and framerate 
parameters that you gave are exactly those of the stream that you are 
trying to record, otherwise video will not play back correctly.
-- 

Ross Finlayson
Live Networks, Inc.
http://www.live555.com/


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