<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hello,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am transcoding video and audio for the purpose of streaming with hlssink. <o:p></o:p></p><p class=MsoNormal>The audio and video are at two different source urls. <o:p></o:p></p><p class=MsoNormal>They are muxed together using mpegtsmux.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>What I have noticed is that the video gets ahead of the audio.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Is there a way to force mpegtsmux to sync the audio and video using a parameter? Can this be done by adding an input selector element?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>>From what I have seen previously, problems were created because software encoders were introducing latency. That is not the case here as the audio is falling behind. I don’t’ see any error messages, it is just that during playback the audio is very noticeably out of sync.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Here is the pipeline I am using.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>gst-launch-1.0 -v -e mpegtsmux name=m ! hlssink target-duration=5 souphttpsrc location=http://127.0.0.1:8000/routestream/5 ! qtdemux name=d d. ! h265parse ! mfxhevcdec ! videoconvert ! mfxvpp width=1280 height=720 ! mfxh264enc ! video/x-h264, stream-format=byte-stream ! m. souphttpsrc location=http://127.0.0.1:8000/routestream/6 ! decodebin ! audioconvert ! voaacenc bitrate=128000 !<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-family:Consolas'>Regards,<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:Consolas'>Rand<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>