<html><head></head><body class="ApplePlainTextBody" dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">Are you sure that you’re not seeing network packet loss? People often have trouble streaming H.264 video with extremely large I-frames, if each I-frame gets encoded as a single NAL-unit. The problem with this is that these NAL units get sent as a (very long) sequence of RTP packets - and if even one of these RTP packets gets lost, then the whole NAL (I-frame in this case) will get discarded by the receiver; see<br><span class="Apple-tab-span" style="white-space:pre"> </span>http://lists.live555.com/pipermail/live-devel/2011-December/014190.html<br><span class="Apple-tab-span" style="white-space:pre"> </span>http://lists.live555.com/pipermail/live-devel/2012-August/015615.html<br><span class="Apple-tab-span" style="white-space:pre"> </span>http://lists.live555.com/pipermail/live-devel/2013-May/016994.html<br><span class="Apple-tab-span" style="white-space:pre"> </span>http://lists.live555.com/pipermail/live-devel/2014-June/018426.html<br><span class="Apple-tab-span" style="white-space:pre"> </span>http://lists.live555.com/pipermail/live-devel/2014-June/018432.html<br><span class="Apple-tab-span" style="white-space:pre"> </span>http://lists.live555.com/pipermail/live-devel/2014-June/018433.html<br><span class="Apple-tab-span" style="white-space:pre"> </span>http://lists.live555.com/pipermail/live-devel/2014-June/018434.html<br><span class="Apple-tab-span" style="white-space:pre"> </span>http://lists.live555.com/pipermail/live-devel/2015-March/019135.html<br><span class="Apple-tab-span" style="white-space:pre"> </span>http://lists.live555.com/pipermail/live-devel/2015-April/019228.html<br>It’s better to encoder large I-frames as a sequence of ‘slice’ NAL units.<br><br>People also often have trouble streaming extremely VBR streams (like yours); sometimes the problem is that the receiving media player (e.g., VLC) has trouble rendering/displaying them properly (i.e., nothing that we can do much about).<br><br>In any case, I suggest running “openRTSP” <http://www.live555.com/openRTSP/> as your client - on the same host as the server - to see if the resulting ‘raw’ video file (if renamed to have a “.h264” filename extension) will play properly in VLC). That should tell you more about what’s going on.<br><br><br>Ross Finlayson<br>Live Networks, Inc.<br>http://www.live555.com/<br><br></body></html>