Hi everybody ! I'm a bit new at GStreamer, it looks like it could be a nice framework even if you get mad at it most of the times... So, I'm trying to do the following thing : I'd like to stream from my webcam but make a backup of this stream in a file. But I would like to "seek" in the stream with a custom made program (in C) that also sends the stream over UDP. So, as it is not possible to directly seek in a stream, I decided to record what my webcam can see in file, then stream the file and try to seek it (this is done with a C program). I really want to use the H.264 codec. I've tried two containers : AVI and MP4. Here are the pipelines (and the problems I encountered) : AVI : Recording : gst-launch -v -e v4l2src ! videoscale ! videorate ! "video/x-raw-yuv,width=(int)320,height=(int)240,framerate=(fraction)15/1" ! x264enc byte-stream=true ! avimux ! filesink location=test.avi & Streaming : gst-launch -v -e filesrc location=test.avi ! avidemux name=demux demux.video_00 ! queue ! decodebin ! x264enc byte-stream=true ! rtph264pay ! udpsink host=192.168.1.12 port=1234 & Problems : I can stream the "being recorded" file and see it with totem and a sdp file but I can't seek backward. I tried the nice gst-rtsp-server library that helps you easily set up a RTSP server but it didn't work. And my program that streams the file over UDP (which contains this pipeline in C) doesn't let me seek backward (and I tried the official GStreamer tutorial "Time Management"). MP4 : Recording : gst-launch -e -v v4l2src ! videoscale ! videorate ! "video/x-raw-yuv,width=320,height=240,framerate=15/1" ! ffmpegcolorspace ! x264enc byte-stream=true ! h264parse ! mp4mux ! filesink location=test.mp4 Streaming : gst-launch -v filesrc location=test.mp4 ! qtdemux name=d d. ! queue ! decodebin ! x264enc byte-stream=true ! rtph264pay ! udpsink host=192.168.1.12 port=1234 & Problems : This time I cannot stream the "being recorded" file. I tried the second pipeline, then my custom program, then the gst-rtsp-server example test-mp4 and all worked with a "finished" file. But not with a "being recorded" file. So I'm pretty much lost because each of the solutions does part of the job but not completely. Do you have any idea? Maybe my pipelines are wrong or the muxers/demuxers/codec can't make it work... Thanks in advance for every single answer I'll get :) <hr align="left" width="300" /> View this message in context: <a href="http://gstreamer-devel.966125.n4.nabble.com/Webcam-stream-a-file-that-is-being-recorded-tried-avi-and-mp4-but-nonthing-worked-tp4671330.html">Webcam : stream a file that is being recorded, tried .avi and mp4 but nonthing worked...</a> Sent from the <a href="http://gstreamer-devel.966125.n4.nabble.com/">GStreamer-devel mailing list archive</a> at Nabble.com.