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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I allow snapshots from my video to be saved when a user pauses and navigates to a frame.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>This is done by encodeing the RGB image into a JPEG image with avcodec.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I also allow pulling a snapshot from a file at a timestamp. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>In this case I navigate to the closest keyframe, decode it from h264 and enode to JPEG and offer it up for view or save.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>H264 like mpeg4 deals with keyframes and difference frames so you must find the frames with the nal types [7][8] and [5] and send all three to the decoder for it to know how to decode it. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><P>This message and any attachments contain confidential and proprietary
information, and may contain privileged information, belonging to one or more
affiliates of Windy City Wire Cable & Technology Products, LLC. No privilege
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error, please delete it from your system, destroy any printouts or copies of it,
and notify the sender immediately by e-mail or phone.</P><br><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</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>On Behalf Of </b>Czarnek, Matt<br><b>Sent:</b> Thursday, February 14, 2013 9:42 AM<br><b>To:</b> live-devel@ns.live555.com<br><b>Subject:</b> [Live-devel] Streaming RTSP and pulling single frames<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Hello,<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p><div><div><div><div><p class=MsoNormal>I would like to is pull from a RTSP stream, and then pull individual frames (whole images) from it and be able to pass pointers around and use those frames from there. Seems like it should be simple but I'm going in circles.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I see testRTSPClient & openRTSP and more or less see how they work & that they can save to a file but am still having trouble figuring out how to pull individual images from the stream. The more versatile the better but I at least need to be able to support H264. Any thoughts?<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Thank you!<o:p></o:p></p></div><p class=MsoNormal><span style='color:#888888'>Matt<br clear=all><o:p></o:p></span></p><div><p class=MsoNormal><span style='color:#888888'><o:p> </o:p></span></p></div></div></div><p class=MsoNormal>-- <o:p></o:p></p><div><p class=MsoNormal>Matt Czarnek, Software Engineer<o:p></o:p></p><div><p class=MsoNormal>Work Phone: <a href="tel:%28760%29%20462-5843" target="_blank">(760) 462-5843</a><o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p style='margin:0in;margin-bottom:.0001pt'><span style='font-size:13.5pt;font-family:"Arial","sans-serif"'>ObjectVideo Inc.</span><span style='font-family:"Arial","sans-serif"'><o:p></o:p></span></p><p style='margin:0in;margin-bottom:.0001pt'><span style='font-size:10.5pt;font-family:"Arial","sans-serif"'><a href="http://www.objectvideo.com/" target="_blank">http://www.objectvideo.com</a></span><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p></o:p></span></p></div></div></div></div></div></div></body></html>