Take a look at the multifilesink element. <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-good-plugins/html/gst-plugins-good-plugins-multifilesink.html">http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-good-plugins/html/gst-plugins-good-plugins-multifilesink.html</a> You might be able to use it in a gst-launch line using the properties - max-file-size - next-file Jesper <div class="gmail_quote">On Fri, Dec 14, 2012 at 7:13 PM, Ian Davidson <<a href="mailto:id012c3076@blueyonder.co.uk" target="_blank">id012c3076@blueyonder.co.uk</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Please can you advise me. I am attempting to record audio/video which I expect to last up to 1½ hours. If I try to do that as one single file, storing as AVI, I get a file which is over 2GB and that causes problems. Therefore, I like to record 3 shorter videos - and in the past I have manually stopped the recording at a 'convenient point' and started a new recording - keeping each recording to a maximum of 40 minutes. An alternative approach would be to record for a certain time and then automatically stop and start a new recording. This would mean that the recording break would probably come when someone was speaking, so there would be a little 'hiccup'. I wrote the script below to see how much of a gap there was between successive recordings (the camera was pointing at a digital clock showing seconds). The videos did not turn out quite as I expected. #!/bin/bash fileNamePart="${HOME}/video" v4l2-ctl -i 1 counter=0 while [ $counter -lt 3 ]; do let counter=counter+1 fullFileName="${fileNamePart}-${counter}.avi" gst-launch-1.0 -e v4l2src norm=PAL num-buffers=100 ! 'video/x-raw,format=(string)I420,width=352,height=288,framerate=(fraction)25/1' ! queue ! mux. alsasrc num-buffers=440 ! audioconvert ! 'audio/x-raw,rate=44100,channels=2' ! queue ! mux. avimux name=mux ! filesink location="$fullFileName" done It would appear that video-1 was fine. Video-2 then started and there was a slight break in the audio from the end of video-1. However, the video content of video-2 has a 4 second gap in the middle of the clip. I assume that the 2 sources v4l2src and alsasrc are each set to produce the nominated number of buffers - and that's what they are going to do. The fact that one source has produced an EOS (I assume) does not stop the other. Would I be correct in assuming that, if I wrote a C program, rather than using gst-launch, I would be able close both sources down at a time that suited me? And also that I cannot do it using gst-launch? Thanks Ian By the way, thanks to those who have already got me this far. -- -- Ian Davidson -- Facts used in this message may or may not reflect an underlying objective reality. Facts are supplied for personal use only. Recipients quoting supplied information do so at their own risk. Facts supplied may vary in whole or part from widely accepted standards. While painstakingly researched, facts may or may not be indicative of actually occurring events or natural phenomena. The author accepts no responsibility for personal loss or injury resulting from memorisation and subsequent use. _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.freedesktop.org" target="_blank">gstreamer-devel@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </blockquote></div>