<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div><blockquote type="cite"><div lang="ZH-CN" link="#0563C1" vlink="#954F72" style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div class="WordSection1" style="page: WordSection1;"><div style="margin: 0cm 0cm 0.0001pt; text-align: justify; font-size: 10.5pt; font-family: Calibri, sans-serif;"><span lang="EN-US"> I have implemented class H264LiveSource so that I can stream real time h.264 video frames. My program captures images with the webcam of my notebook and encodes them. If size is 640x480, vlc player can displayer well. However, if the size is larger,eg.1280x720, vlc player can’t display well, and it seems lots of packets are lost.<o:p></o:p></span></div><div style="margin: 0cm 0cm 0.0001pt; text-align: justify; font-size: 10.5pt; font-family: Calibri, sans-serif;"><span lang="EN-US"> Why are so many packets lost?</span></div></div></div></blockquote><div><br></div>It's difficult to say, because we know so little about your application.</div><div><br></div><div>However, I suggest making sure that your "Fr<span class="Apple-tab-span" style="white-space:pre"> </span>amedSource" subclass (for delivering H.264 NAL units) is not truncating some frames. I.e., check that "fMaxSize" is never < your NAL unit size. (If you are, you can increase your RTP output buffer size by calling "OutPacketBuffer::increaseMaxSizeTo()".</div><div><br></div><div>Also, you should use "openRTSP" as a client to test your server, before using VLC. (VLC is not our software.)</div><br><br><div apple-content-edited="true">
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; ">Ross Finlayson<br>Live Networks, Inc.<br><a href="http://www.live555.com/">http://www.live555.com/</a></span></span>
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