<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><blockquote type="cite"><font color="#666666"><font size="4"><font face="times new roman,serif">I am getting the following error message (H264VideoStreamDiscreteFramer error: MPEG 'start code' seen in the input) while using live555 proxyserver to stream RTSP streams from a few of my IP cameras. This error seems to appear in many IP cameras from a particular vendor. However, it does not appear for other IP cameras. Is it a camera related error?<br></font></font></font></blockquote><div><br></div>Yes, the cameras (for which you see the error message) are incorrectly including MPEG 'start codes' - i.e., 0x00 0x00 0x00 0x01 bytes - at the front of the NAL units that are packed into RTP packets.</div><div><br></div><div>Please contact the vendor of those cameras, telling them that they are not in compliance with the H.264/RTP standard: RFC 3984. (Note in particular, section 1.3 of RFC 3984, which describes the first byte of each NAL unit that is packed into a RTP packet.)</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; font-size: medium; "><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; font-size: medium; ">Ross Finlayson<br>Live Networks, Inc.<br><a href="http://www.live555.com/">http://www.live555.com/</a></span></span>
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