<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-2022-jp"> <style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style> </head> <body dir="ltr"> <div style="font-family: "Yu Gothic", $B^b%4%7%C%/(B, YuGothic, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> There is a sender app and a receiver app.<br> Sender is pulsesrc ->queue -> rtpL16pay -> udpsink</div> <div style="font-family: "Yu Gothic", $B^b%4%7%C%/(B, YuGothic, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> Receiver is udpsrc -> queue -> rtpjitterbuffer( "mode", 1,"latency", 0 for least latency) -> (probe to offset PTS dynamically)queue-> pulsesink (sync is TRUE )</div> <div style="font-family: "Yu Gothic", $B^b%4%7%C%/(B, YuGothic, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <br> </div> <div style="font-family: "Yu Gothic", $B^b%4%7%C%/(B, YuGothic, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> -Abrar</div> <div> <div style="font-family: "Yu Gothic", $B^b%4%7%C%/(B, YuGothic, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <br> </div> <div id="Signature"> <div> <div style="font-family: "Yu Gothic", $B^b%4%7%C%/(B, YuGothic, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> </div> <div><span style="font-family: "Yu Gothic", $B^b%4%7%C%/(B, YuGothic, sans-serif; font-size: 15px;"><br> </span></div> <div><span style="font-family: "Yu Gothic", $B^b%4%7%C%/(B, YuGothic, sans-serif; font-size: 15px;"><br> </span></div> <div><span style="font-family: "Yu Gothic", $B^b%4%7%C%/(B, YuGothic, sans-serif; font-size: 15px;">$B!<!<!<!<!<!<!<!<!<(B</span></div> <div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)"> <p style="margin:0in 0in 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif; background:white"> <span lang="JA" style="font-family:"Yu Gothic",$B^b%4%7%C%/(B,YuGothic,sans-serif; color:rgb(32,31,30)"><span style="font-family:"Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", sans-serif;font-size:15px;text-align:start;background-color:rgb(255, 255, 255);display:inline !important"><span style="font-family:"Yu Gothic", $B^b%4%7%C%/(B, YuGothic, sans-serif;font-size:14.6667px;text-align:left;background-color:rgb(255, 255, 255);display:inline !important">$B%"%V%i%k!&(BT$B%R%s(B<span style="background-color:rgb(255, 255, 255);display:inline !important">$B!&(B</span><span style="background-color:rgb(255, 255, 255);display:inline !important">$B%7%c%O%j%"%k(B<span> </span></span></span></span><span style="font-family: "Yu Gothic", $B^b%4%7%C%/(B, YuGothic, sans-serif; font-size: 15px; text-align: start; background-color: rgb(255, 255, 255); display: inline !important;"> (Abrar Zahin Shahriar</span><span style="font-family: "Yu Gothic", $B^b%4%7%C%/(B, YuGothic, sans-serif; font-size: 15px; text-align: start; background-color: rgb(255, 255, 255); display: inline !important;">)</span><br style="font-family:"Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", sans-serif;font-size:15px;text-align:start;background-color:rgb(255, 255, 255)"> <br style="font-family:"Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", sans-serif;font-size:15px;text-align:start;background-color:rgb(255, 255, 255)"> <span style="font-family: "Yu Gothic", $B^b%4%7%C%/(B, YuGothic, sans-serif; font-size: 15px; text-align: start; background-color: rgb(255, 255, 255); display: inline !important;">$B%O%$%Q!<%@%$%s3t<02q<R(B</span><br style="font-family:"Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", sans-serif;font-size:15px;text-align:start;background-color:rgb(255, 255, 255)"> <span style="font-family: "Yu Gothic", $B^b%4%7%C%/(B, YuGothic, sans-serif; font-size: 15px; text-align: start; background-color: rgb(255, 255, 255); display: inline !important;">$B")(B108$B!](B0014$B!!El5~ET9A6h<G(B5$BCzL\(B9$B!](B12$B!!(B3$B3,(B</span><br> </span></p> </div> </div> </div> </div> <div id="appendonsend"></div> <hr style="display:inline-block;width:98%" tabindex="-1"> <div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Michiel Konstapel <michiel@aanmelder.nl><br> <b>Sent:</b> Thursday, May 19, 2022 6:04 PM<br> <b>To:</b> Discussion of the development of and with GStreamer <gstreamer-devel@lists.freedesktop.org><br> <b>Cc:</b> Abrar Shahriar <abrar.shahriar@hiperdyne.com><br> <b>Subject:</b> Re: PTS Offset to Add Artificial Delay Not Working</font> <div> </div> </div> <div> <p><font face="DejaVu Sans">I think I've seen (or heard) this happen as wel, but I have no idea why :-/ Hopefully someone more knowledgeable will chip in. Do you have an example pipeline that produces this effect?<br> </font></p> <p><font face="DejaVu Sans">Michiel</font></p> <p><font face="DejaVu Sans"></font><br> </p> <div class="x_moz-cite-prefix">On 19-05-2022 06:57, Abrar Shahriar via gstreamer-devel wrote:<br> </div> <blockquote type="cite"><style type="text/css" style="display:none">  </style> <div style="font-family:"Yu Gothic",$B^b%4%7%C%/(B,YuGothic,sans-serif; font-size:12pt; color:rgb(0,0,0)"> I've run into another issue with this. <br> <br> </div> <div style="font-family:"Yu Gothic",$B^b%4%7%C%/(B,YuGothic,sans-serif; font-size:12pt; color:rgb(0,0,0)"> If I increase the PTS offset, it works, but if I then decrease the offset afterwards (to the original offset of 0), the audio quality greatly degrades. </div> <div> <div style="font-family:"Yu Gothic",$B^b%4%7%C%/(B,YuGothic,sans-serif; font-size:12pt; color:rgb(0,0,0)"> <br> </div> <div id="x_Signature"> <div> <div style="font-family:"Yu Gothic",$B^b%4%7%C%/(B,YuGothic,sans-serif; font-size:12pt; color:rgb(0,0,0)"> </div> <div><span style="font-family:"Yu Gothic",$B^b%4%7%C%/(B,YuGothic,sans-serif; font-size:15px"><br> </span></div> <div><span style="font-family:"Yu Gothic",$B^b%4%7%C%/(B,YuGothic,sans-serif; font-size:15px"><br> </span></div> <div><span style="font-family:"Yu Gothic",$B^b%4%7%C%/(B,YuGothic,sans-serif; font-size:15px">$B!<!<!<!<!<!<!<!<!<(B</span></div> <div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)"> <p style="margin:0in 0in 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif; background:white"> <span lang="JA" style=""><span style=""><span style="font-family:"Yu Gothic",$B^b%4%7%C%/(B,YuGothic,sans-serif; font-size:14.6667px; text-align:left; background-color:rgb(255,255,255); display:inline!important">$B%"%V%i%k!&%6%R%s(B<span style="background-color:rgb(255,255,255); display:inline!important">$B!&(B</span><span style="background-color:rgb(255,255,255); display:inline!important">$B%7%c%O%j%"%k(B<span> </span></span></span></span><span style="font-family:"Yu Gothic",$B^b%4%7%C%/(B,YuGothic,sans-serif; font-size:15px; text-align:start; background-color:rgb(255,255,255); display:inline!important"> (Abrar Zahin Shahriar</span><span style="font-family:"Yu Gothic",$B^b%4%7%C%/(B,YuGothic,sans-serif; font-size:15px; text-align:start; background-color:rgb(255,255,255); display:inline!important">)</span><br style=""> <br style=""> <span style="font-family:"Yu Gothic",$B^b%4%7%C%/(B,YuGothic,sans-serif; font-size:15px; text-align:start; background-color:rgb(255,255,255); display:inline!important">$B%O%$%Q!<%@%$%s3t<02q<R(B</span><br style=""> <span style="font-family:"Yu Gothic",$B^b%4%7%C%/(B,YuGothic,sans-serif; font-size:15px; text-align:start; background-color:rgb(255,255,255); display:inline!important">$B")(B108$B!](B0014$B!!El5~ET9A6h<G(B5$BCzL\(B9$B!](B12$B!!(B3$B3,(B</span><br> </span></p> </div> </div> </div> </div> <hr tabindex="-1" style="display:inline-block; width:98%"> <div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Abrar Shahriar <a class="x_moz-txt-link-rfc2396E" href="mailto:abrar.shahriar@hiperdyne.com"><abrar.shahriar@hiperdyne.com></a><br> <b>Sent:</b> Wednesday, May 18, 2022 1:26 PM<br> <b>To:</b> Michiel Konstapel <a class="x_moz-txt-link-rfc2396E" href="mailto:michiel@aanmelder.nl"> <michiel@aanmelder.nl></a>; Discussion of the development of and with GStreamer <a class="x_moz-txt-link-rfc2396E" href="mailto:gstreamer-devel@lists.freedesktop.org"> <gstreamer-devel@lists.freedesktop.org></a><br> <b>Subject:</b> Re: PTS Offset to Add Artificial Delay Not Working</font> <div> </div> </div> <style type="text/css" style="display:none">  </style> <div dir="ltr"> <div style="">Update: It did work when I set the audio sink "sync" to TRUE.</div> <div> <div id="x_x_Signature"> <div> <div><span style=""><br> </span></div> <div><span style="">$B!<!<!<!<!<!<!<!<!<(B</span></div> <div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)"> <p style="margin:0in 0in 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif; background:white"> <span lang="JA" style=""><span style="font-size:15px; text-align:start; background-color:rgb(255,255,255); display:inline!important"><span style="">$B%"%V%i%k!&%6%R%s(B<span style="background-color:rgb(255,255,255); display:inline!important">$B!&(B</span><span style="background-color:rgb(255,255,255); display:inline!important">$B%7%c%O%j%"%k(B<span> </span></span></span></span><span style=""> (Abrar Zahin Shahriar</span><span style="">)</span><br style="font-size:15px; text-align:start; background-color:rgb(255,255,255)"> <br style="font-size:15px; text-align:start; background-color:rgb(255,255,255)"> <span style="">$B%O%$%Q!<%@%$%s3t<02q<R(B</span><br style="font-size:15px; text-align:start; background-color:rgb(255,255,255)"> <span style="">$B")(B108$B!](B0014$B!!El5~ET9A6h<G(B5$BCzL\(B9$B!](B12$B!!(B3$B3,(B</span><br> </span></p> </div> </div> </div> </div> <hr tabindex="-1" style="display:inline-block; width:98%"> <div id="x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Abrar Shahriar <a class="x_moz-txt-link-rfc2396E" href="mailto:abrar.shahriar@hiperdyne.com"><abrar.shahriar@hiperdyne.com></a><br> <b>Sent:</b> Wednesday, May 18, 2022 1:00 PM<br> <b>To:</b> Michiel Konstapel <a class="x_moz-txt-link-rfc2396E" href="mailto:michiel@aanmelder.nl"> <michiel@aanmelder.nl></a>; Discussion of the development of and with GStreamer <a class="x_moz-txt-link-rfc2396E" href="mailto:gstreamer-devel@lists.freedesktop.org"> <gstreamer-devel@lists.freedesktop.org></a><br> <b>Subject:</b> Re: PTS Offset to Add Artificial Delay Not Working</font> <div> </div> </div> <style type="text/css" style="display:none">  </style> <div dir="ltr"> <div style="">Tried it, unfortunately it did not work.</div> <div> <div style=""><br> </div> <div id="x_x_x_Signature"> <div> <div style=""></div> <div><br> </div> <div><span style="">$B!<!<!<!<!<!<!<!<!<(B</span></div> <div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)"> <p style="margin:0in 0in 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif; background:white"> <span lang="JA" style=""><span style="font-size:15px; text-align:start; background-color:rgb(255,255,255); display:inline!important"><span style="">$B%"%V%i%k!&%6%R%s(B<span style="background-color:rgb(255,255,255); display:inline!important">$B!&(B</span><span style="background-color:rgb(255,255,255); display:inline!important">$B%7%c%O%j%"%k(B<span> </span></span></span></span><span style=""> (Abrar Zahin Shahriar</span><span style="">)</span><br style="font-size:15px; text-align:start; background-color:rgb(255,255,255)"> <br style="font-size:15px; text-align:start; background-color:rgb(255,255,255)"> <span style="">$B%O%$%Q!<%@%$%s3t<02q<R(B</span><br style="font-size:15px; text-align:start; background-color:rgb(255,255,255)"> <span style="">$B")(B108$B!](B0014$B!!El5~ET9A6h<G(B5$BCzL\(B9$B!](B12$B!!(B3$B3,(B</span><br> </span></p> </div> </div> </div> </div> <hr tabindex="-1" style="display:inline-block; width:98%"> <div id="x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Michiel Konstapel <a class="x_moz-txt-link-rfc2396E" href="mailto:michiel@aanmelder.nl"><michiel@aanmelder.nl></a><br> <b>Sent:</b> Tuesday, May 17, 2022 10:12 PM<br> <b>To:</b> Abrar Shahriar <a class="x_moz-txt-link-rfc2396E" href="mailto:abrar.shahriar@hiperdyne.com"> <abrar.shahriar@hiperdyne.com></a>; Discussion of the development of and with GStreamer <a class="x_moz-txt-link-rfc2396E" href="mailto:gstreamer-devel@lists.freedesktop.org"> <gstreamer-devel@lists.freedesktop.org></a><br> <b>Subject:</b> Re: PTS Offset to Add Artificial Delay Not Working</font> <div> </div> </div> <div> <p>Yes, by default the queue is limited to 200 buffers, 1 MB, or 1 second of data - whichever limit is hit first. You can check the default values in the docs: <a class="x_x_x_x_moz-txt-link-freetext x_moz-txt-link-freetext" href="https://gstreamer.freedesktop.org/documentation/coreelements/queue.html?gi-language=c#properties"> https://gstreamer.freedesktop.org/documentation/coreelements/queue.html?gi-language=c#properties</a></p> <p><br> </p> <p>So for a 5 second queue, you can set max-size-buffers and max-size-bytes to zero (no limit) and max-size-time to 5000000000.</p> <p><br> </p> <div class="x_x_x_x_moz-cite-prefix">On 17-05-2022 09:49, Abrar Shahriar wrote:<br> </div> <blockquote type="cite"><style type="text/css" style="display:none">  </style> <div style="">I tried adding Queue plugins both before and after, still no success. Do I need to set some params of the Queue elements?</div> <div> <div id="x_x_x_x_Signature"> <div> <div style=""></div> <div><span style=""><br> </span></div> <div><span style=""><br> </span></div> <div><span style="">$B!<!<!<!<!<!<!<!<!<(B</span></div> <div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)"> <p style="margin:0in 0in 0.0001pt; font-size:11pt; font-family:Calibri,sans-serif; background:white"> <span lang="JA" style=""><span style=""><span style="">$B%"%V%i%k!&%6%R%s(B<span style="background-color:rgb(255,255,255); display:inline!important">$B!&(B</span><span style="background-color:rgb(255,255,255); display:inline!important">$B%7%c%O%j%"%k(B<span> </span></span></span></span><span style=""> (Abrar Zahin Shahriar</span><span style="">)</span><br style=""> <br style=""> <span style="">$B%O%$%Q!<%@%$%s3t<02q<R(B</span><br style=""> <span style="">$B")(B108$B!](B0014$B!!El5~ET9A6h<G(B5$BCzL\(B9$B!](B12$B!!(B3$B3,(B</span><br> </span></p> </div> </div> </div> </div> <hr tabindex="-1" style="display:inline-block; width:98%"> <div id="x_x_x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Michiel Konstapel <a class="x_x_x_x_moz-txt-link-rfc2396E" href="mailto:michiel@aanmelder.nl"><michiel@aanmelder.nl></a><br> <b>Sent:</b> Monday, May 16, 2022 6:11 PM<br> <b>To:</b> Discussion of the development of and with GStreamer <a class="x_x_x_x_moz-txt-link-rfc2396E" href="mailto:gstreamer-devel@lists.freedesktop.org"> <gstreamer-devel@lists.freedesktop.org></a><br> <b>Cc:</b> Abrar Shahriar <a class="x_x_x_x_moz-txt-link-rfc2396E" href="mailto:abrar.shahriar@hiperdyne.com"> <abrar.shahriar@hiperdyne.com></a><br> <b>Subject:</b> Re: PTS Offset to Add Artificial Delay Not Working</font> <div> </div> </div> <div> <p>You may need to ensure that you have at least 5 seconds of queue capacity, because the buffers will have to be held somewhere before they can be processed at the later PTS. I don't know if this needs to be before the probed pad, or before the downstream element that cares about the PTS (sink, muxer, mixer, encoder, ..?)<br> Kind regards,<br> Michiel<br> </p> <p><br> </p> <div class="x_x_x_x_x_moz-cite-prefix">On 16-05-2022 11:05, Abrar Shahriar via gstreamer-devel wrote:<br> </div> <blockquote type="cite"><style type="text/css" style="display:none">  </style> <div class="x_x_x_x_x_elementToProof" style="">Hi,</div> <div class="x_x_x_x_x_elementToProof" style=""><br> </div> <div class="x_x_x_x_x_elementToProof" style="">I tried to add 5 seconds (in ns) to the PTS values on the incoming buffers in a probe, but I see no delay. I tried it for both audio and video streams.<br> <br> What could be the reason for it not working? I thought PTS could be used to adjust delay?</div> </blockquote> </div> </blockquote> </div> </div> </div> </blockquote> <br> </div> </body> </html>