The server is waiting for request, for each request I am take a video input ( it can be RTSP input, video file .. ) and output it as 1 image. for example -
this.stream = child_process.spawn("ffmpeg", [ "-i", this.url, "-rtsp_transport", "tcp",'-f', 'mpeg1video', '-b:v', '800k', '-r', '30', '-'], { detached: false }); this.inputStreamStarted = true; this.stream.stdout.on('data', function(data) { return self.emit('mpeg1data', data); }); this.stream.stderr.on('data', function(data) { return self.emit('ffmpegError', data); }); this is part of the code in the object I wrote, just spawning this child process and wait for events in the wrapper. Its not a problem that the solution is clustering or queue because each request execute at the moment its arrive. When I open the Task Manager I can see only 5 process of ffmpeg.exe , I tried to create manually the process from the cmd line and still, the maximum is 4~5 processes. Any Idea? On Sunday, June 28, 2015 at 1:43:35 AM UTC+3, ryandesign wrote: > > > On Jun 27, 2015, at 3:16 AM, Ofir Attia wrote: > > > I facing with issue of nodejs and spawning child process. > > I have noticed that I can spawn at max 5 instances of ffmpeg instances. > > I have a server that listen for requests and each request parsed as > ffmpeg instance that working for 5 minutes. > > The problem is that the number of the instances is limited for 5 I cant > get more instances. > > > > I would like to get some advice in this subject, if you faced with this > issue ( Not necessarily with ffmpeg ) . > > The web server probably shouldn't spawn long-running processes. Instead, > have a separate process to do long-running work, and find a way to > communicate between the web server process and the long-running work > process. For example, using redis is popular. npm has several modules for > helping you manage a work queue. > > However... I'm not sure why spawning more than 5 processes from a web > server would be a problem. I'd need to see some code demonstrating the > problem. > > -- Job board: http://jobs.nodejs.org/ New group rules: https://gist.github.com/othiym23/9886289#file-moderation-policy-md Old group rules: https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines --- You received this message because you are subscribed to the Google Groups "nodejs" group. To unsubscribe from this group and stop receiving emails from it, send an email to nodejs+unsubscr...@googlegroups.com. To post to this group, send email to nodejs@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/nodejs/bd610254-3ddb-4fde-ab9b-9614f58284e0%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.