<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <style type="text/css" style="display:none;"></style> </head> <body dir="ltr"> <div id="divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Helvetica,sans-serif;" dir="ltr"> <p>The gst-launch command you posted is saving raw video data to file. Not sure if that's actually what you want, because you said "<span>everything has to be compressed". That might be the reason why it's so slow.</span></p> <br> <br> <div style="color: rgb(0, 0, 0);"> <div> <hr tabindex="-1" style="display:inline-block; width:98%"> <div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>发件人:</b> gstreamer-devel <gstreamer-devel-bounces@lists.freedesktop.org> 代表 redpanda <patrick.landreman@gmail.com><br> <b>发送时间:</b> 2017年10月25日 10:59<br> <b>收件人:</b> gstreamer-devel@lists.freedesktop.org<br> <b>主题:</b> Save camera to multiple files in real time</font> <div> </div> </div> </div> <font size="2"><span style="font-size:10pt;"> <div class="PlainText">I'm working on an application where I need to capture hours of continuous<br> video, and then later upload specific time windows to a remote machine.<br> Because the video data is large, and this system will be collecting for<br> months, everything has to be compressed.<br> <br> My first attempt was to use two threads to avoid dropping frames - the first<br> has a very simple pipeline with no compression, while the second performs<br> the compression. Here is the pipeline I would want to run on the first: <br> <br> gst-launch-1.0 v4l2src num-buffers=300 ! video/x-raw,framerate=30/1 !<br> filesink location=myFile<br> <br> This command would be run in a loop to capture a sequence of files.<br> Unfortunately, while this should capture 300/30 = 10s of video, it takes 30s<br> to execute. That means I'm losing a huge amount of video before the next<br> iteration of the loop can start.<br> <br> I looked into splitmuxsink, but get a message that it doesn't exist, even<br> though I have all the plugins installed.<br> <br> It seems that gstreamer must be powerful enough for me to access the<br> buffered, raw video and select chunks of it to save as the buffer fills, but<br> there aren't any examples with anything close to this that I can find. 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