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</o:shapelayout></xml><![endif]--></head><body lang=FR link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'> Hi Ross,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>I know this, however I was just wondering if it is possible to manage the case in the switch in order to parse it.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>About MJPEG streaming I remember you consider this is a bad idea. I read many times <a href="http://www.live555.com/liveMedia/faq.html#jpeg-streaming">http://www.live555.com/liveMedia/faq.html#jpeg-streaming</a><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>I also posted a possible solution to stream video/JPEG <a href="http://lists.live555.com/pipermail/live-devel/2012-February/014672.html">http://lists.live555.com/pipermail/live-devel/2012-February/014672.html</a>. I probably modify it but I am still using it and it works quite well.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>There is some use cases where MJPEG streaming has still some meaning :<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span dir=LTR></span><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>It needs less CPU usage, so VCA still use it<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span dir=LTR></span><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>It could easily be played backward, as H264 need to decode a full GOP<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span dir=LTR></span><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>It is simple to subsample the stream.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Sorry for disturbing.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Best Regards,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'> Michel.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>[@@ THALES GROUP INTERNAL @@]<o:p></o:p></span></p></div></div></div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>De :</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> live-devel-bounces@ns.live555.com [mailto:live-devel-bounces@ns.live555.com] <b>De la part de</b> Ross Finlayson<br><b>Envoyé :</b> jeudi 3 avril 2014 10:27<br><b>À :</b> LIVE555 Streaming Media - development & use<br><b>Objet :</b> Re: [Live-devel] MJPEG support for MKV parser<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I took a look at your example MKV file. It turns out that this file (and apparently all MKV files with JPEG video tracks) stores each JPEG frame as a complete JPEG image, including a JPEG header. For RTP streaming, however, we don't include the JPEG header. Therefore, to stream a JPEG video track from a MKV file, we'd need to add an additional filter (not currently implemented) that parses the JPEG header of each frame, to derive/extract out the 'type', 'qfactor', and (if non-standard) the quantization table - to put in the RTP packet.<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>This is something that might get done sometime in a future, but since JPEG video streaming is a bad idea (that nobody should really be doing in 2014), it's not a high priority for me.<o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal><span class=apple-style-span><span style='font-family:"Helvetica","sans-serif";color:black'>Ross Finlayson</span></span><span style='font-family:"Helvetica","sans-serif";color:black'><br><span class=apple-style-span>Live Networks, Inc.</span><br><span class=apple-style-span><a href="http://www.live555.com/">http://www.live555.com/</a></span></span> <o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p></div></body></html>