I can't change the size of the named pipe buffer since my app runs on iPhone iOS.
Changing BANK_SIZE makes no difference - VLC player starts playing the stream, then pauses for 3-5 seconds, then plays again and the pattern continuous. What else would you recommend? Thanks. On Sun, Mar 6, 2011 at 4:52 PM, Ross Finlayson <finlay...@live555.com>wrote: > I am trying to make Live555 work with live video source. My H263 encoder > writes encoded frames to Unix named pipe (FIFO) with a rate of 15 fps*.* I > created a RTSPServer instance, ServerMediaSession and added > a H263plusVideoFileServerMediaSubsession (reuseFirstSource=True), passing > the FIFO file name as the subsession parameter. > > > VLC and/or QuickTime player start playing the stream, then repeatedly > freeze for several seconds, then play again. However, everything works fine > if I stream pre-recoded H.263 encoded elementary stream from file (without > using named pipe). Is this happening when RTSPServer is getting EOF while > trying to read the data from the pipe? > > > No, it's most likely because the server is trying to read more data from > the pipe than is currently available, so the operating system is blocking > the reading server until the other end (the encoder) makes enough data > available. > > One way to fix this is to - if you can - increase the internal (i.e., OS) > buffering in your named pipe. Our server tries to read up to 150000 bytes > at a time (the constant BANK_SIZE in "StreamParser.cpp"), so you should try > to make the pipe's buffer at least this large. > > Alternatively - if you can't increase the amount of buffering in your pipe > - you could try reducing the value of the constant BANK_SIZE in > "StreamParser.cpp". You should not make this too small, though; it needs to > be at least as large as the largest possible H.263 frame that you expect to > see. > I don't recommend doing this except as a last resort, though, because it > requires modifying the supplied source code. > > -- > > > Ross Finlayson > Live Networks, Inc. > http://www.live555.com/ > > _______________________________________________ > live-devel mailing list > live-devel@lists.live555.com > http://lists.live555.com/mailman/listinfo/live-devel > >
_______________________________________________ live-devel mailing list live-devel@lists.live555.com http://lists.live555.com/mailman/listinfo/live-devel
